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1. TUNER OFF indicator lights out RIT SUB OFF indicator lights out LOCK OFF SHIFT Center indicator light out Turn power ON then check the display If any of the following indicators appear turn them OFF as follows e Tuning step indicators w SSB CW or RTTY e Memory mode indicator MEMO Push TS Use F 3 fi i it display p 75 MHz tuning step indicator w FM or AM e Split indicator Push TS Use F 1 5Fi in the fi display p 75 e1 Hz frequency readout SSB CW or RTTY Push and hold TS E VFO description VFO is an abbreviation of Variable Frequency Oscilla tor and traditionally refers to an oscillator The IC 703 s VFO can store a frequency and an operating mode You can call up a desired frequency to a VFO with the memo pad read switch p 60 or with the memory transfer switch p 58 You can also change the fre quency with the main dial and select an operating mode with the MODE switch or call up previously ac cessed frequency and modes with the band stacking register p 22 The IC 703 has two VFOs specially suited for split fre quency operation The VFOs are called VFO A and VFO B You can use the desired VFO to call up a fre quency and operating mode for operation BASIC OPERATION 3 MODE SWITCH VFO Select
2. 8 V DC output Frequency up down CAUTION DO NOT short pin 1 to ground as AF output this can damage the internal 8 V regulator PTT GND Microphone ground Microphone input GND Squelch switch HM 103 SCHEMATIC DIAGRAM MICROPHONE 2k MICROPHONE PLUG MICROPHONE CABLE Taid 0 i 10un MIC ELEMENT 12345678 _ PTT RECEIVE MO TRANSMIT TIT mm 2 E Unpacking After unpacking immediately report any damage to the delivering carrier or dealer Keep the shipping cartons For a description and a diagram of accessory equip ment included with the IC 703 see Supplied acces sories on p ii of this manual E Selecting a location Select a location for the transceiver that allows ade quate air circulation free from extreme heat cold or vibrations and away from TV sets TV antenna ele ments radios and other electromagnetic sources The base of the transceiver has an adjustable stand for desktop use Set the stand to one of two angles de pending on your operating conditions see description at right page E Grounding To prevent electrical shock television interference TVI broadcast interference BCI and other prob lems ground the transceiver through the GROUND terminal on the rear panel For best resu
3. POWER SWITCH POWER p 17 While transceiver s power is OFF Push to turn power ON e Turn the DC power supply ON in advance While transceiver s power is ON O Push momentarily to indicate the connected power supply voltage O Push for 1 sec to turn power OFF AF GAIN CONTROL AF inner control p 17 Varies the audio output level from the speaker AF RF SQL Decreases e A Increases No audio output Max audio output RF GAIN CONTROL SQUELCH CONTROL RF SQL outer control p 24 Adjusts the RF gain and squelch threshold level The squelch removes noise output from the speaker closed condition when no signal is received The squelch is particularly effective for FM It is also available for other modes 12 to 13 o clock position is recommended for any setting of the RF SQL control e The control can be set as Auto RF gain control in SSB CW and RTTY squelch control in AM and FM or squelch control RF gain is fixed at maximum in initial set mode as follows p 79 SET MODE SETTING SQL AUTO RF GAIN SQL RF GAIN SQL RF GAIN SQL RF GAIN SQL eWhen setting as RF gain squelch control Noise squelch FM mode Recommended level N aa Maximum RF gain Squelch Se open RF gain _ _ adjustable range S meter squelch When functioning as RF gain control Squelch is fixed
4. ACC Ponor f un f am A an f a TU or TNC me Lae view I gt MSEND orenge RENI L GND red 0 FSKK black OOJ sa light green Connect SQL line when required 7 AF out light blue eres refer to connection to the supplied ACC cable Personal computer RTTY FSK operation Connect a terminal unit as at above Push 4 BAND BAND to select the desired TX inidicator Main dial band G Push MODE momentarily to select RTTY mode After RTTY mode is selected push MODE for 1 sec to toggle between RTTY and SSB D modes While the quick set mode item i 2 is selected in Ste J Je RTTY mode rotate main dial to select RTTY or ora i as M GIRTTY mode eee 1 e Push DISPLAY for 1 sec to enter the quick set mode MENU F 2 e Push MENU one or more times to select i e Push DISPLAY momentarily to return to normal oper RTTY or GARTTY appears ating mode Rotate AF to set audio to a comfortable listening GArty level Select the desired FSK tone shift frequencies and keying polarity as at page 40 age ee ee Rotate the main dial to tune a desired signal e Use F 1 174 in the ti display when critical setting is required S meter indicates received
5. Y NOTE You will need to select the type of keyer you Y are using in the keyer set mode There are many advanced CW functions in this set mode Until you Z have a full understanding of these functions Z change only the items necessary 3 Other convenient items QUICK REFERENCE GUIDE Headphones A 3 5 d mm 1 4 mono jack for operation without using the internal or external speakers Perfect for op eration without disturbing others in the room O C Front panel HEADPHONES PHONES A 2 SPEAKER la Select PHONES with the PHONES SPEAKER switch on the back of the front panel External Speaker A 3 5 d mm mono jack for operation with an ex ternal speaker Input impedance 8 Q Max input power 5 W Rear 5 Front panel SPEAKER PHONES A SPEAKER Select SPEAKER with the PHONES SPEAKER switch on the back of the front panel E Your first contact Now you should have your IC 703 installed in your shack and like a kid on his birthday you are probably excited to get on the air We would like to take you through a few basic operation steps to make your first On The Air an enjoyable experience Getting started 1 Before powering up your radio you may want to make sure the following controls are set in th
6. Specifications for the AT 180 e Connector information for ACC 2 socket Frequency coverage 1 9 54 MHz e Input impedance 50 Q igh Reee e Maximum input 120 W D TIP power e Minimum tuning 8 W power e Matching impedance 16 7 150 Q HF band PIN NO range 20 125 Q 50 MHz band NAME PERE RENRN e Tuning accuracy Less than SWR 1 5 1 Dev Regulated 8 V output e Insertion loss Less than 1 0 dB 10 mA max after tuning GND Connects to ground e Power supply 13 8 V DC 1 A supplied from requirements the transceiver s ACC socket Input output pin SEND Goes to ground when transmitting 20 mA e Dimensions mm in 167 W x58 6 H x225 D max When grounded transmits 6 6 W x 2847 H x 874 D Weight 2 4 kg 5 Ib 4 oz Banp Band voltage output l Supplied accessories coaxial cable 1 m Varies with amateur band 0 to 8 0 V ACC cable DIN 13 pins ALC ALC output voltage 4 to 0 V NC No connection 13 8V 13 8 V output when power is ON 1 A max E General e Frequency coverage Receive 30 kKHz 60 00000 MHz Transmit 1 800 1 99999 MHz 3 500 3 9999 MHz 7 000 7 300 MHz 10 100 10 150 MHz 14 000 14 350 MHz 18 068 18 168 MHz 21 000 21 450 MHz 24 890 24 990 MHz 28 000 29 700 MHz 50 000 54 000 MHz Depending on version e Mode SSB CW AM FM RTTY e Number of memory 105 split memory 99
7. Push F 2 to toggle the noise blanker ON and OFF NB lt a Appears when NB appears when the noise blanker is turned ON akaa f the noise blanker Q Push F 2 for 1 sec to enter the noise blanker is turned ON level set mode below Rotate the main dial to set the noise blanker level Push DISPLAY to exit the noise blanker level set mode Noise blanker level set mode While is selected in all modes push F 2 ME 1 sec to enter the noise blanker level set mode for USB This item adjusts the noise blanker level The noise blanker level can be adjusted from 0 to 10 bay The default is 5 Although noise blanker level set mode is available in all modes the noise blanker function is not effective for FM mode E AGC time constant The AGC Automatic Gain Control controls receiver gain to produce a constant audio output level even when the received signal strength is varied by fading etc Use AGC slow for normal phone operation AGC fast for receiving data and searching for signals AGC time constant cannot be changed in FM mode Select f e Push DISPLAY once or twice to select Push MENU one or more times to select is TP low to Fo Push F 3 is to toggle the AGC time constant tre LL Li between fast and slow Faco lt Appears when S135 79 20 40 6o VFOA r Faac appears when the fast time constant is selected AGC f
8. rise Quick set mode 1SSB mode only 94 le Mm 19 apoutce 95 INSTALLATION NOTES For amateur base station installations it is recom mended that the forwards clearance in front of the an tenna array is calculated relative to the EIRP Effective Isotropic Radiated Power The clearance height below the antenna array can be determined in most cases from the RF power at the antenna input terminals As different exposure limits have been recommended for different frequencies a relative table shows a guideline for installation considerations Below 30 MHz the recommended limits are specified in terms of V m or A m fields as they are likely to fall within the near field region Similarly the antenna may be physically short in terms of electrical length and that the installation will require some antenna matching de vice which can create local high intensity magnetic fields Analysis of such MF installations is best consid ered in association with published guidance notes such as the FCC OET Bulletin 65 Edition 97 01 and its annexes relative to amateur transmitter installations The EC recommended limits are almost identical to the FCC specified uncontrolled limits and tables exist that show pre calculated safe distances for different an tenna types for different frequency bands Further in formation can be found at http w
9. The Light timer can be set to AUTO ON or OFF to suit lighting condition Auto Automatically select on or oFF depends on power supply voltage default on Lights when some operation is performed goes out after 5 sec Lights continuously during transceiver power is ON OFF Light timer setting Default is Auto LED brightness The LED brightness control for front panel can be set to high or low ods ra LED brightness set a LLI LED brightness set to high to low default SLES i Automatic power OFF The auto power OFF function can be used to auto DD r ogre reer matically turn the transceiver OFF after a specified time of operation This item can be set to 30 min 60 min 90 min 120 min or OFF Auto power OFF deactivates default Auto power OFF set to 20 min is set to ON marked items are undisplayed 78 12 SETMODE Current intercept point the RIT function ON lights red rotating M CH changes the RIT frequency when this item is set to FrEq pushing RIT SUB turns the sub dial function ON lights green rotating M CH changes the op erating frequency Note that in FM and AM modes pushing RIT SUB always selects the sub dial func tion lights green regardless of this setting mr Pushing RIT SUB selects the RIT function default This item set the control
10. This item adjusts microphone gain from 1 to 10 for in T WS dication however it can be adjusted continuously Note that while adjusting mic gain the ALC meter is displayed automatically T a ewe This item adjusts the CW key speed The key speed M s can be selected from 6 to 60 wpm vi The detault 1s 20 wpm RTTY mode This item selects RTTY or GRTTY RTTY reverse any Th e default is normal mode gt SSB D mode This item selects the carrier point USB mode or LSB ne mode are selectable L The default is LSB mode f SSB mode This item adjusts the carrier frequency BFO fre a The default is 0 Hz quency allowing you to change the audio character F i istics Selectable values are 200 to 200 Hz in 10 Hz steps ah Cid CW mode This item selects CW or CWE CW reverse mode i Th e default is normal E initial set mode items SETMODE 12 Max output power setting This item selects maximum output power The max r power is can be set 10 5 2 5 1 or 0 5 W mal i L The default is 10 W Power save setting The power save mode reduces the current drain to conserve battery power This function is convenience for battery operation AUTO The power save function starts in 1 1 200 cc msec 200 msec ratio when no signal is re ceived for 5 sec then the ratio becomes in 4 200 msec 800 msec and 1 8 200 msec 1600 msec after no signal is rec
11. is selected push F 1 auto notch filter function ON and OFF ANF appears when the noise reduction is set to ON to turn the Convenient functions for transmit e Speech compressor p 54 While ii is selected push F 2 the speech compressor ON and OFF e Push DISPLAY once or twice to select e Push MENU one or more times to select is COM appears when the speech compressor is set to ON e Push F 2 i level set mode for 1 sec to enter the compression VOX eles pereen transmit p While i is selected push F the VOX function ON and OFF Push DISPLAY once or twice to select Push MENU one or more times to select t VOX appears when the VOX function is set to ON Push F 1 i01 for 1 sec to enter the VOX set mode E Operating FM Push 4 BAND BAND to select the desired band Push MODE momentarily or for 1 sec to select FM mode After FM or AM mode is selected push MODE for 1 sec to toggle between FM and AM modes Rotate AF control to set audio to a comfortable lis tening level Rotate the main dial to tune a desired signal e S meter indicates received signal strength e The default tuning step for FM mode is 1 kHz this can be changed using the tuning step program mode p 19 Push PTT microphone to transmit The TX indicator lights red Speak into the microp
12. 20 21 3 BASIC OPERATION e TS switch flow chart SSB CW RTTY modes Any mode USB USB cay wt vice a a tt al OL aa SS ot 10 Hz tuning lt Programmable step tuning lt momentarily 100 Hz 100 kHz momentarily 1 sec 1 sec 1 sec momentarily 1 Hz tuning Appears Selectable for each mode FM AM modes 1 MHz tuning Sub dial function The sub dial function allows you to change the oper ating frequency using the M CH control This gives you more control in tuning since the M CH knob is detented each click changes the frequency accord ing to the set tuning step This function is always available in FM and AM modes However in SSB he and RTTY modes the initial set mode item 2 1 p 61 must be set to FrEq Push RIT SUB to turn the sub dial function ON e The SUB indicator lights green if it lights red the RIT function is activated sub dial function must be set in initial set mode in this case Rotate M CH to change the operating frequency according to the set tuning step 3 Push RIT SUB again to turn the function OFF The SUB indicator turns off M CH RIT SUB eC WCO Indicator lights green while the sub dial function is activated BASIC OPERATION 3 e Quick band change function The quick band change function automatically stores the last frequency and mode
13. C LOLs Change DIAL Transfer Transfer Transfer MEMORY BAND MEMO PAD CHANNEL 21 295 MHz 28 025 MHz 7 001 MHz The differences between VFO and memory mode VFO MODE Each VFO shows a frequency and operating mode If the frequency or operating mode is changed the VFO automatically memorizes the new frequency or oper ating mode When the VFO is selected from another VFO or memory mode the last used frequency and operat ing mode for that VFO appear EXAMPLE VFO is selected The frequency is changed Memory mode is selected VFO is selected again Changed frequency 14 123 MHz appears MEMORY MODE pgs 56 60 Each memory channel shows a frequency and oper ating mode like a VFO Even if the frequency or mode is changed the memory channel does not memorize the new frequency or operating mode When a memory channel is selected from another memory channel or VFO mode the memorized fre quency and operating mode appear EXAMPLE Memory channel 1 is selected The frequency is changed Another memory channel is selected Memory channel 1 is selected again I 7 MEMO CH Changed frequency 14 123 MHz does not appear and memorised frequency 14 100 MHz appears instead 3 BASIC OPERATION E Frequency setting e Band selection All HF ham bands the 50 MHz band and a general coverage receiver band are included i
14. P AMP ATT OFF indicator lights out AF Max CCW counterclockwise TUNER OFF indicator lights out RIT SUB OFF See CCW IEY AAN D indicator lights out SHIFT Center 1 Setting up your Mic Gain RF SQL Center LOCK OFF indicator light out Microphone gain must be adjusted properly so that your signal does not distort when transmitted Select SSB or another phone mode AM or FM mode Push DISPLAY for 1 sec to select quick set mode 3 Push MENU one or more times to select H The ALC meter is selected automatically when operat ing in SSB mode While speaking into the microphone rotate the main dial to adjust the microphone gain so that the ALC meter does not peak past the ALC zone While transmitting at your normal voice level the ALC meter should read at about the middle of the ALC zone Be sure the mic gain is in the range of 2 to 5 Push DISPLAY to exit quick set mode O mac Io a DISPLAY S1 3 579 20 40 60dB ALC ALC GGtiial E Se il ALC zone Main dial 2 Speech compressor QUICK REFERENCE GUIDE The IC 703 has a built in low distortion speech com pressor circuit This circuit increases your average talk power in SSB mode and is especially useful for DX
15. Optional AH 2b antenna element DANGER HIGH VOLTAGE NEVER touch the antenna element while tuning or transmitting NEVER operate the AH 4 without an antenna wire The tuner and transceiver will be damaged NEVER operate the AH 4 when it is ungrounded Transmitting before tuning may damage the trans ceiver Note that the AH 4 cannot tune when using a Y i long wire or multiple of the operating frequency AH 4 operation Tuning is required for each frequency Be sure to re tune the antenna before transmitting when you change the frequency even slightly Set the desired frequency in an HF band e The AH 4 will not operate on frequencies outside of ham bands Push TUNER for 1 sec e The TUNER light flashes and CW appears while tun ing TUNER Push TUNER for 1 sec The TUNER light lights constantly when tuning is complete eWhen the connected wire cannot be tuned the TUNER light goes out the AH 4 is bypassed and the antenna wire is connected to the antenna connector on the transceiver directly CONVENIENT To bypass the AH 4 manually push TUNER PTT tune function The AH 4 is always tuned when the PTT is pushed after the frequency is changed more than 1 This function removes the push and hold TUNER oper ation and activates first transmission on the new fre quency This function is turned ON in initial set mode ite
16. 8 Select VFO mode Select the desired operating mode The operating mode can also be changed while scan ning 3 Set SQL open or closed e See page a left for squelch condition Select 52 e Push DISPLAY once or twice to select e Push MENU one or more times to select Push F 1 EH to start the scan e Decimal oi blinks while scanning When the scan detects a signal the scan turns OFF pauses or ignores it depending on the re sume setting and the squelch condition e During scan TS can be used only wnen resume is ON To cancel the scan push F 1 SEH gy NOTE If the same frequencies are programmed Z into the scan edge memory channels 1A and 1B programmed scan does not start 9s a a FO SQL MANU DISPLAY nd tt mr h l eS FS S135 7 9 20 40 60dB we then push F 1 Select VFO mode E Memory scan operation Select memory mode Close the squelch with SQL 3 Select e Push DISPLAY once or twice to select e Push MENU one or more times to selec Push F 1 55N to start the scan e Decimal tee blinks while scanning When the scan detects a signal the scan stops or pauses depending on the resume setting To cancel the scan push F 1 Y NOTE Two or more memory channels must be Y programmed for memory scan to start M7 SQL MANU DISPLAY S1 3 57 9 20 40 60dB 5 10 MEMO
17. DATACOMMUNICATION 10 Before operating packet AFSK be sure to consult the operating manual that came with your TNC Connect a TNC and PC as left page Push 4 BAND BAND to select the desired band Push MODE momentarily to select SSB LSB mode or select SSB D mode After USB mode is selected push MODE for 1 sec to toggle between USB and LSB modes After RTTY mode is selected push MODE for 1 sec to toggle between RTTY and SSB D modes Generally LSB is used on the HF bands and FM is used for the 50 MHz band Rotate AF to set audio to a comfortable listening level Rotate the main dial to tune a desired signal e S meter indicates received signal strength Transmit your AFSK signals using your computer s keyboard e The TX indicator lights red g NOTE When connecting a TNC to the ACC socket Yon the rear panel select SSB D mode or discon ZY nect the microphone and adjust MIC GAIN to 0 in g quick set mode Y Z When SSB D mode is selected the audio input Z trom the MIC connector is automatically cut and Z the audio input from the ACC is used AF TX indicator MODE Main dial USB or LSB blinks when SSB D mode is selected LSB USB Frequency indication during AFSK operation When operating AFSK in SSB mode the indicated frequency is the signals carrier point e Example SSB D mode Mark freq 2125 Hz Shift freq
18. Hint When using the noise blanker received signals may be distorted if the noise blanker level setting has been too high QUICK REFERENCE GUIDE f Filter One optional filter can be installed in the IC 703 Narrow filters help reject interference from adjacent signals and obtain good selectivity Wide filters provide improved audio for SSB opera tion when no interfering signals are present Narrow filters for AM FM modes are standard FILTER PRESETTING After you install a filter see p 87 for installation you must specify the installed filter in initial set mode item 2 a FIL seep 79 FILTER ON OFF Select e Push DISPLAY once or twice to select e Push MENU one or more times to select 3 Push F 1 momentarily to select the narrow filter push for 1 sec to select the wide filter appears when the narrow filter is selected M ap pears when the wide filter is selected gy NOTE When selecting the narrow filter or wide fil GY ter the graphic passband is changed see dia gram below wide is Normal narrow is selected operation selected Ss 3 579 20 40 6008 VFOA a Either these appears when selected We hope these pointers have been helpful Now you are ready for the Ready to call CQ Quick Reference VIII QUICK REFERENCE GUIDE E Ready to call CQ POWER OFF
19. Push DISPLAY once or twice to select Push MENU one or more times to select H e Push F 3 MHL then rotate M CH to adjust the noise reduction level NR appears when the noise reduction is set to ON to turn the e Auto notch filter p 50 While is selected push F 1 auto notch filter function ON and OFF ANF appears when the noise reduction is set to ON to turn the oy function While i is selected push F 1 the 1 4 ineen ON and OFF Push DISPLAY once or twice to select Push MENU one or more times to select to turn RTTY reverse mode QUICK SE L MODE Received characters are occasionally garbled when the receive signal is reversed between MARK and SPACE This reversal can be caused by incorrect TNC connections settings commands etc To receive a reversed RTTY signal correctly select GIRTTY RTTY reverse mode Select RTTY mode with MODE Push DISPLAY for 1 sec to enter quick set mode 3 Push MENU one or more times to select then rotate the main dial to s lect RTTY and ARTTY modes e Check the interference tone Push DISPLAY momentarily to exit quick set mode MODE _ L MENU DISPLAY Main dial Normal Reverse Space Mark Space Mark e a lere 170 21235 21425 170 Hz Hz i 1 Hz Hz BFO BFO displayed freq displayed
20. Rotate the main dial to set the values or conditions for the selected item Repeat steps and to set other items To exit initial set mode push POWER for 1 sec to turn power OFF Push POWER to turn power ON again e The conditions selected in initial set mode are now ef fective Item number Initial set mode operation Push POWER for 1 sec to turn power OFF While pushing LOCK push POWER to turn ra Main dial power ON e Initial set mode is selected and one of its items ap oO pears Push MENU one or more times to select the de So sired item gt OOmom 0e Ja c PP e v M i mn ee DISPLAY EXAMPLE INITIAL SET MODE 707 lt _____ _ Value or condition Item number 74 75 12 SETMODE E Quick set mode items Mode Set mode item Default setting Mode H 5 level 0 Hz Set mode item Default setting H n normal H 20 WPM H L LSB side n normal H 5 level all modes This item adjusts the RF output power The RF out put power can be adjusted from L 1 to 9 and H for in dication however it can be adjusted continuously ut The default is H maximum power Note that while adjusting the output power the power meter is displayed automatically l SSB AM FM modes The default is 5
21. The RIT Receiver Incremental Tuning shifts the receive fre quency without shifting the transmit frequency This is useful for fine tuning stations calling you on an off fre quency or when you prefer to listen to slightly different sounding voice characteristics etc SHIFT CONTROL SHIFT outer control p 47 Shifts the center frequency of the receiver s IF pass band e Rotate the control clockwise to shift the center frequency higher or rotate the control counterclockwise to shift the center frequency lower When rotate the control the IF passband is graphically displayed and changes in accordance with the SHIFT control M CH SHIFT M CH SHIFT M CH SHIFT Cy alleen Shifts low Center Shifts high M CH CONTROL M CH inner control When the RIT or SUB DIAL functions are OFF ro tate to select a memory channel number p 56 Shifts the receive frequency while the RIT func tion is ON in SSB CW and RTTY modes see above or p 47 e RIT variable range is 9 99 kHz Changes the operating frequency in the selected tuning steps while the SUB DIAL function is ON p 21 M CH SHIFT 5 Decreases 1 y Increases A 4 HEADPHONE JACK PHONES p 14 Accepts headphones with 8 16 impedance When headphones are connected no receive audio comes from the speaker When the PHONES SPEAKER switch on the back of the front panel is set to the SPE
22. as desir Select i in VOX set mode e Push MENU one or more times to select i e While speaking into the microphone adjust VOX GAIN until the transceiver is transmitting Select i in VOX set mode Push MENU one or more times to select ii lf the receive audio from the speaker toggles the trans ceiver to transmit during receive adjust the ANTI VOX to the point where it has no effect Push DISPLAY to exit VOX set mode S Pi VOX 1 3 579 20 40 60dB VFOA 1 VOX set mode is selected in SSB AM FM modes push for 1 sec to enter the VOX set mode This item adjusts the VOX Voice activated Transmit USB delay time The delay time can be adjusted from 0 to iti The default is 1 0 seconds 2 sec in 0 1 sec steps This item adjusts the VOX gain for the VOX voice ac oe _ tivated transmit function a The default is 5 This item adjusts the ANTI VOX gain for the VOX a voice activated transmit function a The default is 5 E Speech compressor FUNCTION FOR TRANSMIT 6 The IC 703 has a built in low distortion speech com pressor circuit This circuit increases your average talk power in SSB mode and is especially useful for DX ing when the receiving station is having difficulty copying your signal Select USB or LSB mode Select the mic gain display in quick set mode e
23. 200 Hz 2325 Hz 200 Hz 2125 Hz Ea gt lt Carrier point Displayed frequency 68 69 10 DATA COMMUNICATION SSB D mode selection Push MODE one or more times to select RTTY mode 2 Push MODE for 1 sec to SSB D mode After RTTY mode is selected push MODE for 1 sec to toggle between RTTY and SSB D modes X GY NOTE When SSB D mode is selected the audio ZY input from the MIC connector is automatically cut Y and the audio input from the ACC is used WS MODE O Co Co Co OPERATING MODE SELECTION y USB lt gt LSB y Push cw ma MeMONY keyer MODE SELMOCE momentarily ATTY a gt SSBD Push Aer gt MODE y for 1 sec FM gt AM Carrier point setting QUICK SET MODE Select SSB D mode with MODE Push DISPLAY for 1 sec to enter quick set made ruven MENU one or more times to select it ie then rotate the main dial to elect U USB mode or L LSB mode ii MENU DISPLAY Main dial Adjusting the transmit signal from the TNC DATACOMMUNICATION 10 gy NOTE For packet operation the transceiver can be Z set to one of two data speeds 1200 bps or ie Zt bps Data peed i is set in initial set mode item 2 Zacea MODE see p 81 Push POWER for 1 sec to turn power OFF While
24. Select the desired announcing condition such as speed language contents in initial set mode p 82 Push LOCK for 1 sec until zero is announced to announces the selected contents Cam ac 0 R LOCK MAIN unit V Adjusting the announcing audio level Adjust the R7205 on the MAIN unit 86 87 15 OPTION UNIT INSTALLATIONS AND SETTINGS IF filter Several IF filters are available for the IC 703 Choose a filter most appropriate to your operating needs Y NOTE After filter installation specify the installed GZ tilter using initial set mode item 22 p 79 Other 4 wise the installed filter will not function properly FL 52A CW RTTY NARROW FILTER 500 Hz 6 dB FL 53A CW NARROW FILTER 250 Hz 6 dB FL 222 ssB NARROW FILTER 1 8 kHz 6 dB FL 257 SSB WIDE FILTER 3 3 kHz 6 dB Remove the top cover as shown on the previous page 2 Disconnect the coaxial cable connectors P2 and P4 then unscrew 10 screws on the MAIN unit Attach the grounding spring at the same place when re turning 3 Slide the MAIN unit in the direction of the arrow then open the MAIN unit in the direction of the arrow e Be careful for the flat cables Front side Install the desired filter as shown in the diagram below Optional IF filter Flat washers Tighten
25. gles are memorized as a preset point for each fre quency range 100 kHz steps Therefore when you change the frequency range the variable capacitors are automatically preset to the memorized point Y CAUTION NEVER transmit with the tuner ON G when no antenna is connected This will damage the transceiver Be careful of the antenna selection e The AT 180 can match both HF and 50 MHz bands However operation is different for the HF and 50 MHz bands TUNER OPERATION For the HF band Push TUNER to turn the tuner ON The antenna is tuned automatically during transmission when the an tenna SWR is higher than 1 5 1 When the tuner is OFF the TUNER light goes out yO CO j O o oO fo o oo ca 20 TUNER TUNER lt Lights to indicate AT 180 is turned ON e For the 50 MHz band Push TUNER for 1 sec to tune the antenna If the TUNER light flashes slowly while transmitting push and hold TUNER for 1 sec again to re tune the an tenna TUNER TUNER lt Flashes to indicate re tuning is necessary MANUAL TUNING During SSB operation on HF bands at low voice lev els the AT 180 may not be tuned correctly In such cases manual tuning is helpful Push TUNER for 1 sec to start manual tuning CW mode is selected a side tone is emitted and the TUNER light flashes then the previous mode is selected oO yO HO so o o o ca 70 TUN
26. ing when the receiving station is having difficulty copying your signal Select USB or LSB mode 2 Select the ALC meter e Push DISPLAY once or twice to select e Push NU one or more times to select F 3 F one or more times to select ALC 3 Select His e Push MENU one more time to select fis Push F 2 to turn the speech compressor function ON COM appears Push F 2 for 1 sec to enter the compres sion level set mode p 54 Rotate the main dial to set the speech compression level then push Y NOTE When the ALC meter peaks at light the ALC zone your transmitted voice may be distorted ALC MGGiiiiik R ALC zone Hint Voice patterns and audio characteristics vary with each operator therefore the Microphone gain speech compression settings will be different for each operator Actual on air experimenting is nec essary to get just the right sound It s best to test and adjust your audio on the air while someone who knows what your real voice sounds like listens and provides and opinion on your audio quality Verify you have selected a clear frequency and call out your CQ Quick Reference a E Front panel Ot PANEL DESCRIPTION JEIVER IC 703 fe 3F S hL HF 50MHz TRANS ICOM Z S P AMP ATT x M CH 2 SHIF l PHONES O
27. oS oe CO Cw g o o o pere ge 8 S 3 58 8 s 3s s olog es 3 a a 8 2 D oo ET Et Ze 2 d x D o EG E eD gt 2 Ss oO p K K 82 ga oo oO E x2 x2 Oo S S 2 55 8 2 8 amp a g B vE E Z 5 O ka is 5 kzi D S B D S o S Oo 5 g S Oo g a m Ww faa IC 703 TO CONTROLLER NG MESSAGE TO CONTROLLER FE FE E0 68 Cn Sc Data area FD FE FE 68 EO FA FD ttttt tod P ttt Te E ae a A ee 7 g 28238 SF 9 g 8 8 8 8 x 5 5 EL EP oo x amp amp S Se Se a o aid id eo E0 CB 2 o o o oO oO o o B 00 009 FE E B p g is a a 8258 25 o is a aa o is 2 To oo Er Er ae 2 3 O g D O EX EQ o gt gt a ou GU 2 2 o n 59 63 ao D E o v D fos T o O OY S E 8 a ad y 2 S amp S S 2 5 3 S S 2 i 8 6 B gE E a g P E g 5 5 2 8 S 2 7 O a 71 Command table CONTROL COMMAND 11 128 600 Hz 255 900 Hz Command Sub command Description Command Sub command Description 00 Send frequency data 14 0A Level data RF power setting O mini to 01 Same as Send mode data E22 ah en command 06 OB Level data Microphone gain setting O mini 02 Read band edge frequencies E F i pees mies Safe eSeeeeeeeed OC Level data Key speed setting O slow to 03 Read operating frequency
28. 2 is set to ON marked items are undisplayed 76 12 SETMODE Confirmation beeps A beep sounds each time a switch is pushed to con firm it This function can be turned OFF for silent op eration eee Confirmation beep ON default II mr Confirmation beep OFF Band edges beep LSB and USB The carrier point is LSB side default A beep sounds when an operating frequency enters or 771 7 E E exits a transmit frequency range This functions inde pendent of the confirmation beep setting above Band beep ON Band beep OFF default Beep level adjustment When Eiki is set ON this item adjust the con Pa The deadiiss firmation beep level Adjustable levels are 0 to 10 in 1 eee ee steps a Beep audio level limit This item allows you to set a maximum volume level mh e E E for confirmation beep tones Confirmation beep tones eee uf are linked to the AF control until a specified volume Beep limit ON Beep limit OFF level is reached further rotation of the AF control default will not increase the volume of the beep tones REP Lid CW carrier point setting is i i i ee lita This item select the carrier point of CW mode from hh Hit heat The carrier point is USB side CW side tone level This item sets the CW side tone output level Selec table levels are 0 to10 in 1 steps ra The default is 5 T
29. 4 This item selects a subaudible tone for FM T mode operation to access a repeater There are 50 tones available from 67 0 Hz to 254 1 Hz see table at right FM ptt Le w 1 The default is 88 5 Hz e Available subaudible tone frequencies Unit Hz 67 0 85 4 107 2 136 5 165 5 186 2 210 7 69 3 88 5 110 9 141 3 167 9 189 9 218 1 71 9 91 5 114 8 146 2 171 3 192 8 225 7 74 4 94 8 118 8 151 4 173 8 196 6 229 1 77 0 97 4 123 0 156 7 177 3 199 5 233 6 79 7 100 0 127 3 159 8 179 9 203 5 241 8 82 5 103 5 131 8 162 2 183 5 206 5 250 3 254 1 This item sets a subaudible tone for tone squelch use The same subaudible tone frequencies as for re peater operation are available see above r J mi i The default is 88 5 Hz m T J H Repeater tone scan During repeater operation you can detect the tone _ J lt ms The default is 88 5 Hz squelch see p 43 frequency necessary to open a repeater see p 45 mr oe i Tone squelch tone scan During tone squelch operation you can detect the aae tone frequency necessary to communicate using tone mr 1 The default is 88 5 Hz 44 45 4 RECEIVE AND TRANSMIT E Repeater operation A repeater amplifies received signals and re transmits them at a different
30. 71 AH 2b AH 4 p 16 Used for computer control and transceive operation 2 INSTALLATION AND CONNECTIONS EDC Power voltage Depending on the applied voltage from the connected power supply a boarder voltage of 11 0 V is set as the point where the IC 703 switches between normal op erating mode over 11 0 V and battery operating mode under 11 0 V power save mode However when the connected voltage decreases from 13 8 V to 11 0V the IC 703 switches from normal mode to battery mode Conversely the IC 703 switches back to normal mode from battery mode when the voltage reaches 11 5 V This 0 5 V voltage difference prevents irregular switching between nor mal mode and battery mode caused by the voltage drop which are current capacity receiving or transmit ting When 11 3 V voltage is applied the IC 703 may acti vate the battery operating mode depending on the current capacity of the power supply EDC Power supply connections Use a 13 8 V DC power supply with at least 3 A ca pacity when operating IC 703 with AC power Refer to the diagram below for connection Y CAUTION Z Before connecting the DC power cable check the Y following important items Make sure Z The POWER switch is OFF CONNECTING PS 125 DC POWER SUPPLY PS 125 Transceiver e Output voltage of the power source is 9 0 15 8 V when you use a non Ilcom power su
31. 80 TABLE OF CONTENTS 29 UP DN speed 0c eeeeee neces 80 30 Noise blanker in AM mode 80 31 Available memo pads eee 80 32 Power ON check function 81 33 Auto tune start function 81 34 PTT tune function ccccceeee eee 81 35 Tuner switch condition 0 81 36 Packet data speed 0 2 eeeeeeee 81 37 Voice synthesizer language 82 38 Voice synthesizer speed 00 82 39 S meter level speech eccere 82 40 CI V address setting cee 82 41 Cl V data transffer rate 0 82 42 CI V transceive 2 cece cece cece ee ee ee 82 43 Cl V operating frequency data length 82 13 MAINTENANCE cccccceceeceeceenseneens 83 MFuse replacement 0cceceeeeeeeeeeees 83 M Memory backup cceeeeeeeeeeeeeeee eee eees 83 ME Cleaning sors aerea SAN 83 14 TROUBLESHOOTING ccsceeeeees 84 85 15 OPTIONAL UNIT INSTALLATIONS AND SETTINGS 86 89 E Opening the transceiver case 0 0655 86 MUT 102 VOICE SYNTHESIZER UNIT e ceeeee ease 86 gt Operation GA gosie pa oes a e a a 86 Me tite eE E E E E T 87 W UT 106 DSP RECEIVER UNIT ccc ceseeeee cesses ease 88 MEMB 72 CARRYING HANDLE ccs ceeeeeeeeeeeee ease 88 AT 180 internal switch description 89 16 SPECIFICAT
32. Accepts a 50 Q antenna with a PL 259 connector GROUND TERMINAL GND p 11 Connect this terminal to a ground to prevent electri cal shocks TVI BCI and other problems DATA SOCKET DATA pgs 8 14 6 pin min DIN socket to connect a TNC Terminal Node Controller etc for packet operation e See page at right for socket information ACCESSORY SOCKET ACC pgs 8 14 Enables connection to external equipment such as a TNC for data communications a linear amplifier or an automatic antenna selector tuner etc e See page at right for socket information EXTERNAL SPEAKER JACK EXT SP p 14 Accepts a 4 8 speaker CI V REMOTE CONTROL JACK REMOTE p 71 Designed for use with a personal computer for re mote control of the transceiver functions Used for transceiver operation with another Icom CI V transceiver or receiver MICROPHONE CONNECTOR MIC p 13 Accepts the supplied microphone connected in par allel with the front panel s MIC connector See p 2 for microphone notes See p 10 for microphone connector information ELECTRONIC KEYER JACK KEY p 28 Accepts a paddle to activate the internal electronic keyer Selection between the internal electronic keyer and straight key operation can be made in keyer set mode p 32 When connecting a straight key When connecting a paddle G f you use an external electronic keyer make sure Z the
33. F 1 KEYER SET MODE p 32 Push for 1 sec to enter the keyer set mode e The break in setting break in delay time CW pitch CW paddle type and dot dash ratio can be set in the keyer set mode V What is the break in function Full break in QSK activates the receiver between transmit ted dots and dashes This is useful when operating in nets or during DX pileups and during contests when fast ex changes are common RTTY TONE SET MODE p 40 Push for 1 sec to enter the RTTY tone set mode The RTTY tone frequency RTTY shift fre quency and RTTY keying polarity can be set in RTTY tone set mode FM TONE OPERATION Push momentarily to select the subaudi ble tone encoder for repeater use tone squelch function and OFF pgs 43 45 T appears when the repeater tone function is ON pgs 43 45 TSQL appears when the tone squelch func tion is ON p 43 Push for 1 sec to enter the FM tone set mode p 44 The repeater tone frequency tone squelch frequency can be set in FM tone set mode S1 functions PANEL DESCRIPTION 1 S3 functions MEMORY WRITE p 57 Push for 1 sec to store the selected readout frequency and operating mode into the displayed memory channel MEMO PAD WRITE p 60 th Push to store the the selected readout frequency and operating mode into a memo pad F 2 MEMO PAD REA
34. For memory scan Program 2 or more memory chan nels except scan edge memory channels For memory select scan Designate 2 or more mem ory channels as select memory hannels select a memory channel then push F 2 i i play memory mode to designate the channel as a se lect memory channel For priority watch Program 1 memory channel to be watched eScan resume ON OFF You can select the scan to resume or cancel when de tecting a signal in initial set mode item Scan resume ON OFF must ba el before operating a scan See p 80 for ON OFF setting and scan resume condition details eScan speed Scan speed can be selected from 2 levels high or low in initial set mode See p 80 for details e Squelch condition SCAN STARTS PROGRAMMED MEMORY SCANS SCAN PRIORITY WATCH WITH The scan continues Scan pauses on each until it is stopped man channel when the ually and does not scan resume is ON pause even if it de not applicable when SQUELCH tects signals OFF OPEN This is not applicable when the scan re sume is OFF and a programmable step more than 1 kHz is selected Scan stops when detecting a signal If you set scan resume ON in initial set mode SQUELCH the scan pauses for 10 sec when detecting a CLOSED signal then resumes When a signal disap pears while scan is paused scan resumes 2 sec later E Programmed scan operation SCAN OPE RATION
35. after the frequency is changed more than 1 from last tuned frequency This function removes the push and hold TUNER operation and activates for the first transmission on a new frequency This function can be turned ON in initial set mode p 81 e TUNER RESET POWER Make sure the transceiver power is OFF While pushing A and V push POWER to turn i appears as shown below Rotate main dial to select tuner reset Then Push F 3 for 1 sec to start tuner resetting e The memorized tuner settings are reset TUNER TUNER es Lights to indicate internal tuner is activated NOTES e The internal antenna tuner can tune the HF to 50 MHz bands e NEVER transmit without an antenna properly connected to antenna port in use lf the SWR is higher than about 1 5 1 when tuning above 100 kHz on an antenna s preset point push TUNER for 1 sec to start manual tuning When strong impact is applied the internal tuner may not work properly caused by the latching relay is off po sition In this case push POWER momentarily to reset the all latching relays while transceiver power is ON If the tuner cannot tune the antenna Check the following and try again ethe antenna connection and feedline ethe unaltered antenna SWR Less than 3 1 for HF bands Less than 2 5 1 for 50 MHz band ethe power source voltage capacity If the tuner cannot reduce
36. function is activated DISPLAY SWITCH DISPLAY p 94 Push Nias to pele one ol pa three menu sets fl to Pis 51 to 24 and amp ib Push for 1 sec to enter iie auick a mode MULTI FUNCTION SWITCHES F1 F2 F3 Push to select the function indicated in the dot ma trix display above these switches pgs 4 6 94 e Functions vary depending on the menu set selected Push to edit a character for memory keyer pro gramming or memory name pgs 35 59 MENU SWITCH MENU p 94 Push this switch one or more times to select menus within a menu set 1 or f or push to advance through the quick set mode and initial set mode displays Push for 1 sec to jump between two different function menu sets 1 PANEL DESCRIPTION RIT SUB DIAL SWITCH RIT SUB pgs 21 47 Push to toggle the RIT or SUB DIAL function ON and OFF initial set mode is used to select the desired action e Lights green when the SUB DIAL function is ON lights red when the RIT function is ON Use the M CH control to vary the RIT frequency or SUB DIAL frequency see below When the RIT function is ON push for 1 sec to add or subtract the shifted frequency to the oper ating frequency oS Lights red while the RIT function is activated green while the SUB DIAL function is activated Even if RIT is selected in initial set mode RIT cannot be se lected when operating AM or FM modes V What is the RIT function
37. scan edges 6 channels Antenna connector SO 239 50 Q e Usable temperature 10 C to 60 C 14 F to 140 F range e Frequency stability Less than 0 5 ppm 0 C to 50 C 32 F to 122 F e Power supply 9 15 87 V DC negative ground requirement e Current drain Transmit 2 0 A typ TX 5 W at 9 6 V DC 3 0 A typ TX 10 W at 13 8 V DC Receive squelched 300 mA typ at 9 6 V DC max audio 450 mA typ at 9 6 V DC 1 2 A at 13 8V DC e Dimensions 167 W x58 H x200 D mm projections not included 6 6 W x 2546 H x 774 D in e Weight 2 0 kg 4 Ib 4 oz Cl V connector 2 conductor 3 5 d mm ACC connector 13 pin E Transmitter Output power SSB CW FM RTTY 0 1 5 W at 9 6 V DC 0 1 10 W at 13 8 V DC AM 0 1 2 W at 9 6 V DC 0 1 4 W at 13 8 V DC Modulation system SSB Balanced modulation AM Low level modulation FM Variable reactance modulation e Spurious emissions Less than 60 dB spurious freq below 30 MHz 50 dB above 50 MHz 60 dB Carrier suppression More than 40 dB e Unwanted sideband More than 50 dB e Microphone 8 pin modular jack 600 Q connector e KEY connector 3 conductor 6 35 d mm 1 SPECIFICATIONS 16 Hl E Receiver e Receive system Double conversion superheterodyne e Intermediate frequencies 1st 64 455 MHz 2nd 455 kHz e Sensitivity at pre amp ON typical Frequency SSB CW RTTY AM FM range 10 dB S N 10dBS N 12dB SINA
38. such as the telephone television or stereo audio systems 2 Installing your DC Power Supply The DC power supply is a device used to convert 110 220 V AC also know as Household current to a steady source of 13 8 V DC The perfect match to your IC 703 is the PS 125 This plug and play unit plugs into the DC power recepta cle using an optional OPC 1248 located on the rear of the radio Or connect the supplied DC power cable OPC 1229 to the appropriate color coded terminals then insert the DC connector into the DC power receptacle lo cated on the rear of the radio Y NOTE Although the power supply current require h ment is quite low during receiving this not the case when you transmit With many electrical devices in GY the shack it is very important to verify the electrical J circuit is not overloaded iO Transceiver eI Ground a AC to DC outlet PS 125 power A DC power receptacle supply Black Red O E 13 8 V at least 3 0 A continuous AC cable DC power cable Optional Supplied OPC 1248 OPC 1229 z Connect to an AC outlet using the supplied AC cable 4 A fuses 3 Installing lightning protection QUICK REFERENCE GUIDE Although you may not live in an area with high occur rence for lightning storms it is always wise to take precautions for l
39. then push F 1 Select memory mode 62 63 8 SCAN OPERATION E Select memory scan operation Select memory mode 2 Close the squelch with SQL 3 Select 2 e Push DISPLAY once or twice to select Push MENU one or more times to select Push F 1 5H to start the memory scan e Decimal point blinks while scanning Push F 2 1 to change the memory scan to se lect memory scan e Push F 2 sE for 2 sec to clear all select memory channels When the scan detects a signal the scan stops or pauses depending on the resume setting To cancel the scan push F 1 230 4 gy NOTE Two or more memory channels must be designated as select memory channels for select Y memory scan to start see p 61 SQL MANU F 2 DISPLAY Select memory mode Designate g E Priority watch Select VFO mode then set a frequency Close the squelch with SQL 3 Set the desired memory channel as the watching channel Select 22 e Push DISPLAY once or twice to select Push MENU one or more times to select Push F 2 F 1 to start the priority watch e Decimal point blinks while scanning When the scan detects a signal the scan pauses for 10 sec or until the signal disappears depend ing on the resume setting To cancel the scan push F NOTE The paused condition when detecting
40. trated in fig 2 BE CAREFUL of the orientation of the MB 63 oth 4 erwise the front panel may become attached in the Y opposite direction 2 INSTALLATION AND CONNECTIONS E Required connections HF 50MHz TRANSCEIVER IC 703 ICOM s P AMP ATT TUNER PHONES CD GD ED p MICROPHONE p 10 GROUND p 11 Use the heaviest gauge wire or strap available and make the connection as short as possible Grounding prevents electrical shocks TVI and other problems J CW KEY p 28 it Connects to DC 9 0 15 8 V power supply See p 15 for details W INSTALLATION AND CONNECTIONS 2 E Advanced connections HF 50MHz TRANSCEIVER IC 703 HEADPHONES or EXTERNAL S Selectable with the PHONE SPEAKER switch SPEAKER p 91 on the back of the front panel A ACC SOCKET p 8 J DATA SOCKET p 8 L SP 7 SP 10 J DESKTOP p 91 MICROPHONE 6 pin mini DIN socket to connect to a TNC etc for packet operation REMOTE p
41. 4 CONNECTING THE AT 180 ACC cable supplied with the AT 180 Y HF to 6 m antenna ANT one of two ACC f ACC connectors AT 180 gt 22 a all le sess aC y TRANSCEIVER owo GOGG Coaxial cable supplied with the AT 180 Ground Ground Note Turn the IC 703 s power OFF when connecting the AT 180 otherwise the CPU may malfunction and the AT 180 may not function properly CONNECTING A NON ICOM LINEAR AMPLIFIER 4 A WARNING Set the transceiver output power and linear ampli fier ALC output level referring to the linear amplifier instruction manual Be sure the linear amplifier key ing circuit control voltage is compatible with the IC 703 before connecting to HSEND line ACC cable eThe ALC input level must be in the range O V to 4 V and the transceiver does not accept positive voltage Non matched ALC and RF power settings could cause a fire or damage the linear amplifier eThe specifications for the SEND relay are 16 V DC 0 5 A If this level is exceeded a large external relay must be used WYK II 50 Q coaxial cable To an antenna IC 703 gt ed ANT 7 9 O Qe 5000 DJ RF OUT REIN G O00 ALC o ALC Blue UJ HSEND Ground Or
42. 7 177 3 199 5 233 6 79 7 100 0 127 3 159 8 179 9 203 5 241 8 82 5 103 5 131 8 162 2 183 5 206 5 250 3 Tone scan operation By monitoring a signal that is being transmitted on a repeater input frequency you can determine the tone frequency necessary to open a repeater During tone squelch or repeater operation T or TSQL is displayed select Push DISPLAY once or twice to select fi e Push MENU one or more times to select t1 2 Push F 2 4 for 1 sec to enter the FM tone set mode Push MENU one or more times to select during tone squelch operation or during repeater operation if tone squelch function or tone encoder has not been selected this item does not appear Q Push F 3 F to toggle the tone scan operation ON and OFF While scanning tone frequencies are displayed instead of the operating frequency When a matched tone is detected tone scan automati cally stops the matched tone is displayed and the re peater tone or tone squelch tone setting is automatically adjusted accordingly Push DISPLAY to exit the FM tone set mode Main dial LAY During tone squelch operation During repeater operation FM tone set mode While i is selected in FM mode push F 2 1 sec to enter the FM tone set mode i for RECEIVE AND TRANSMIT
43. M Operating CW ieee 28 Connections for CW aeee 28 OCW operation eee eee eee eee eee eee es 29 Convenient functions for receive 30 Convenient functions for transmit 30 CW reverse mode 0ceeeeeeeeeeeeeeees 30 Q CW pitch control eee eee eee eee es 31 Electronic CW keyer eeeeeeeeeeeee ners 31 CW side tone function 32 Q Keyer set mode oo eee eee eeee eee eee eee es 32 E Memory keyer functions ceeeeeeee eee 33 Memory keyer send menu 2 0eeee 34 Editing a memory keyer seeen 35 Contest number set mode eeeeeee 36 Memory keyer set mode 37 E Operating RTTY oeenn 38 Connections for RTTY FSK 38 RTTY FSK operation 0ceeeee ee 38 Convenient functions for receive 39 RTTY reverse mode ceceeeeeeeeeeeees 39 Q Presetting for RTTY assesseer 40 Q RTTY tone set mode aeee 40 E Operating AM eenen 41 Convenient functions for receive 41 Convenient functions for transmit 41 M Operating FM oo eee eee cence eee eee eeeeeeneeae 42 Convenient functions for receive 42 Convenient functions for transmit 42 Tone squelch operation cece 43 Q Tone scan operation o e 43 Q FM tone set mode necer 44 M Repeater operation ccceeeeeeeeeeeeeee eee 45 5 FUNCTION FOR R
44. Push DISPLAY for 1 sec e Push MENU one or more times to select it e The ALC meter is selected automatically when operat ing in SSB mode 3 Adjust the mic gain While transmitting at your normal voice level the ALC meter should read at about the middle of the ALC zone Be sure the mic gain is in the range of 2 to 5 Select the ALC meter e Push DISPLAY once or twice to select fi Push MENU one or more times to select 12 then push F 3 FE T one or more times to select ALC Push MENU one or more times to select s Push F 2 f 4 to turn the speech compressor function ON COM appe Push F 2 i for 1 sec to enter the compres sion level set mode below Rotate the main dial to set the speech compression level MODE MENU F 2 DISPLAY Main dail txt et ALC MGRGRGGEb ie ALC zone Adjust COMP LEVEL so that the ALC meter reads within the ALC zone Y NOTE When the ALC meter peaks above the ALC zone your transmitted voice may be distorted Compression level set mode is selected in SSB AM modes push for 1 sec to enter the compression level set This item adjusts the speech compression level The speech compression level can be adjusted from 0 to 10 USB The default is 5 54 55 6 FUNCTION FOR TRANSMIT BSWR Measuring SWR The IC 703 has a built
45. Push MODE momentarily Push for 1 sec Cc o 2 4 Ss V M ae a as E Volume setting Rotate AF control to output a suitable audio level AF RF SQL Decreases y No audio output Max audio output AF CO o e E BASIC OPERATION E Squelch and receive RF sensitivity 3 Adjusts the RF gain and squelch threshold level The squelch removes noise output from the speaker closed position when no signal is received e The squelch is particularly effective for FM mode It is also available for other modes The control can be set as the RF gain control only squelch is fixed open or squelch control RF gain is fixed at maximum in initial set mode p 79 See below right The 11 to 12 o clock position is recommended for any set ting of the RF SQL control SET MODE OPERATION Can be used in all modes RF SQL Functions as noise squelch or S meter default squelch in AM and FM modes S meter squelch only in other modes Operates as a squelch control SQL RE gain is fi be e RF gain is fixed at maximum sensitivity Operates as an RF gain control in SSB CW and RTTY modes AUTO e Squelch is fixed open Operates as a squelch control in AM and FM modes RF gain is fixed at maximum sensitivity Adjusting RF gain Receive sensitivity Normally RF SQL is set to
46. appear and BLANK appears To return to VFO mode push F 3 pa pa MEMO CH BLANK memo amp amp CH E Frequency transferring The frequency and operating mode can be trans ferred from memory mode to VFO mode O Select i functions e Push DISPLAY once or twice to select e Push MENU one or more times t select Miz Select VFO mode with F 3 i i Select a memory channel with 1 IM CHI e Select memory mode to confirm the memory channel s contents if desired then return to VFO mode BLANK appears if the selected memory channel is a blank channel and does not have contents In this case ec is not possible Push F 3 F for 1 sec to transfer the frequency and aperating mode Transferred frequency and operating mode appear in the display a M CH MENU EXAMPLE Transferring contents of memory 16 21 320 MHz USB VFO Operating frequency F 3 DISPLAY Contents of memory 16 14 020 MHz CW USB pa AZIZ L I Lec VFOA I CH USB pa ee ee eet Te ae Fa L IL LL LILI VFOA Lpa Etcu cw z bhArr LLL LLII VFOA IZ LL icH M CH SHIFT 58 59 7 MEMORY OPERATION E Memory names All memory channels including scan edges can be tagged with alphanumeric names of up to 9 charac ters each
47. i Tl F k or F 3 FE 2 to select the desired memory keyer channel to be edited Input the desired character by rotating the main dial e Selectable characters with the main dial Y NOTE ig used to transmit a following word with no space such as ar Put before a text string such as AR and the string AR is sent with no Y space Gx is used to insert the CW contest number ZG The contest number automatically increments by 1 This function is only available for one Z memory keyer channel at a time Memory keyer channel MK2 used by default Y Push F 2 to erase characters Push F 1 4 or F 3 to move the cursor back wards or ee respectively Repeat steps and to input the desired char acters Push MENU or DISPLAY three times to return to the keyer send menu Pre programmed contents CONTENTS indication default MODE Main dial S oO ndication default Ten Fa MENU F 2 DISPLAY e Memory keyer menu J Push e Edit menu Cea Push indication default Displays i for 1 sec then shows the default contents Push F 2 to erase characters e Example display when inputting QSL TU DE JA3YUA TEST into ndication default Contest sone counter is set by entering an asterisk Cont
48. lock function is activated E Basic transmit operation Q Transmitting Before transmitting monitor your selected op erating frequency to make sure transmitting won t cause interference to other stations on the same frequency It s good Amateur practice to listen first and then even if nothing is heard ask is the frequency in use once or twice be fore you begin operating on that frequency Push PTT microphone to transmit e The TX indicator lights red Release PTT microphone to return to receive Maximum output power Push POWER for 1 sec to turn power OFF While pushing LOCK push POWER to turn power ON and enter initial set mode 3 Push MENU one or more times to select if necessary M CH or A V can also be used Rotate the main dial to select the desired maximum output power or 10 e Default setting is 10 Push POWER to turn power OFF and ON again e Maximum output power is selectable 0 5 1 2 5 5 lt UO Se ek C Le a M T a QUICK SET MODE Setting output power BASIC OPERATION 3 Push DISPLAY for 1 sec to select quick set mode Push MENU one or more times to select 7 Rotate the main dial to select the desired output e Output power is displayed in 11 steps L 1 9 and H but is continuously
49. memory keyer send menu DISPLAY e CW mode mox Memory keyer send menu ispay Memory keyer menu NK Ss 3 579 2 40 6048 VFOA S13 5 79 20 40 60dB VFOA Pol 152 35 10 Pol 152 35 10 Push for 1 sec menu Fa CF2 CFs menu Fa CF 2 CF Push F 1 Push F 2 Push F 3 Push MENU r Push Push or DIAPLAY DISPLAY DISPLAY e Edit menu e Contest number set mode e Menory keyer set mode menu F 1 F 2 F3 Set mode item can be selected with A BAND V BAND or M CH during set mode Push MENU r or DIAPLAY Push MENU or DIAPLAY Push MENU x or DIAPLAY meno Fa CF2 CFs menu Fa Cre Crs menu F 1 F2 F3 Memory keyer send menu RECEIVE AND TRANSMIT 4 Pre set characters can be sent using the memory keyer send menu Contents of the memory keyer are set using the edit menu Transmitting Select CW mode with MODE Push MODE for 1 sec to enter the memory keyer send menu 3 Set the break in function ON p 32 When step is performed during the break in func tion OFF monitors the memory keyer contents Push one of the function keys F 1 M 1 to F 3 ME2 to send the contents of the memory keyer Pushing a function key for 1 sec declan sends the contents and blinks push any function key to can
50. of current intercept point for D a Dsiatis Au power saving PILIL LI PAUE S ACAO Auto Automatically select on or oFF depends on power supply voltage default on Power saving mode continuously oFF Priority to intercept point a RF gain squelch control E ay 7 i The RF SQL control can be set as the squelch con E SR trol default the RF squelch control USA version de Hib elg alin Ae eee fault or automatic acts as squelch in FM AM modes and squich onal for control only as RF in SSB CW RTTY modes See p 24 all modes wed Sub dial setting When this item is set to rit pushing RIT SUB turns rl Ss Pushing RIT SUB selects the sub dial function mM i 1 Optional filter selection When an optional filter is installed this selection is necessary otherwise the filters cannot be selected Selections available are FL 52A FL 53A FL 222 FL 257 and none default See p 49 for usable filters for each mode and see p 87 for filter installation ren No filters are selected default Ls ron ai a L FL 52A for CW narrow filter is selected Sen Y Although the FL 96 is not listed on the option list IC 703 would take FL 96 as well as other optional filter When the peak hold function is ON the highest acti vated segment of the meter remains visible for 0 5 sec when OFF the meter functions normally _E Peak meter hold setting rar
51. open SSB CW RTTY only Maximum RF gain Adjustable range Minimum RF gain r x When functioning as squelch control RF gain is fixed at maximum Noise squelch Noise squelch FM mode threshold S meter squelch FM mode A threshold Squelch is W S meter open squelch Shallow x Deep FUNCTION DISPLAY Shows the operating frequency dot matrix indica tions selected memory channel etc See p 9 for details TUNING STEP SWITCH TS pgs 19 21 While in SSB CW RTTY modes push momentar ily to turn the programmable tuning step ON and OFF While in FM AM mode push momentarily to toggle the programmable tuning step and 1 MHz quick tuning step While the programmable tuning step indicator is dis played the frequency can be changed in programmed kHz steps Programmable tuning step indicator 0 01 FM AM mode only 0 1 1 5 9 10 12 5 20 25 and 100 kHz tuning steps are available 1 MHz quick tuning step are only available in FM and AM modes While the programmable tuning step is OFF turns the 1 Hz step ON and OFF when pushed for 1 sec 1 and 10 Hz steps are only available in SSB CW and RTTY modes 1 Hz indication appears and the frequency can be changed in 1 Hz steps While the programmable tuning step is ON en ters the tuning step selection mode when pushed for 1 sec MODE SWITCH MODE p 23 Push momentarily to cycle through the operating modes USB LSB CW RTTY
52. operating Y mode called up from a memo pad the frequency ZG and operating mode in the temporary pad are 7 erased F 3 MANU F 2 DISPLAY Displayed frequency and mode USB MP5 Newest al WAD VAI l 0 tee MP4 l m EZH soe MP3 i wnt wri 2 he ees MP2 l T ay eet ee T L LUIL LIL MP1 y i HEAR Oldest The oldest written frequency and mode are erased MEMO PADS 61 E SCAN OPERATION E Scan types PROGRAMMED SCAN Repeatedly scans between two scan edge frequencies scan edge memory channels 1A and 1B Scan edge 1A or 1B Scan edge 1B or 1A This scan operates in VFO mode PRIORITY WATCH Checks for signals on a memory while operating on a VFO frequency VFO N Memory frequency 1 channel This scan operates in VFO mode MEMORY SCAN Repeatedly scans all programmed memory channels S select S select S select This scan operates in memory mode SELECTED MEMORY SCAN Repeatedly scans all selected memory channels BLANK S select S select S select S select This scan operates in memory mode E Preparation Channels For programmed scan Program scan edge frequen cies into scan edge memory channels 1A and 1B p 57
53. portable or mobile HF 50 MHz op eration The PTT tune function provides simple operation e Input power rating 150 W AH 2b ANTENNA ELEMENT A 2 5 m long antenna ele ment for mobile operation with the AH 4 e Frequency coverage 7 54 MHz band with the AH 4 Optional filters FL 52A CW RTTY NARROW FILTER 500 Hz 6 dB FL 53A CW NARROW FILTER 250 Hz 6 dB FL 222 SSB NARROW FILTER 1 8 kHz 6 dB FL 257 SSB WIDE FILTER 3 3 kHz 6 dB HM 103 HAND MICROPHONE Standard hand microphone SM 20 DESKTOP MICROPHONE gt Includes UP DOWN switches and a low cut function The OPC 589 is necessary to use this microphone CT 17 Cl V LEVEL CONVERTER UNIT For remote transceiver control using a per sonal computer equipped with an RS 232C port You can change frequencies operat ing mode memory channels etc via your computer SP 7 EXTERNAL SPEAKER Compact speaker for base station opera tion Height can be adjusted for your conve nience e Input impedance 8 Q e Max input power 5 W SP 10 EXTERNAL SPEAKER External speakers suitable for mobile oper ation SP 12 Slim type 8 9 3 W SP 10 Compact type 4 9 5 W 91 UT 102 VOICE SYNTHESIZER UNIT Announces the receive frequency mode and S meter level in a clear electronically generated voice in English or Japanese MB 62 MOBILE MOUNTING BRACKET Mounts the transceiver main body w
54. selectable Push DISPLAY to exit quick set mode Available power Power supply voltage 13 8 V SSB CW RTTY FM 0 1 10 W DC power mode 9 6 V Battery mode 0 1 5 W Carrier power Main dial N o oO oO Maa Oo MENU DISPLAY Maximum output power is selected Setting microphone gain QUICK SET MODE Microphone gain must be adjusted properly so that your signal does not distort when transmitted Select SSB or another phone mode AM or FM mode Push DISPLAY for 1 sec to select quick set mode Push MENU one or more times to select H2 e The ALC meter is selected automatically when operat ing in SSB mode While speaking into the microphone adjust the mi crophone gain so that the ALC meter does not peak past the ALC zone Push DISPLAY to exit quick set mode Main dial DISPLAY Microphone gain is set to 5 S1 3 5 79 20 40 60dB ALC ALC MGGiiiiih ALC zone 26 27 4 E Operating SSB Push 4 BAND BAND to select the desired band Push MODE momentarily or push for 1 sec to se lect LSB or USB mode Below 10 MHz LSB is automatically selected above 10 MHz USB is automatically selected Rotate AF control to set audio to a comfortable lis tening level Rotate the main dial to tune a desired signal e S meter indicates received
55. station is busy for a long time and you want to tem porarily search for other stations Use the transceiver s memo pads instead of relying on hastily scribbled notes that are easily misplaced eWriting frequencies and operating modes into memo pads Select the 1 display e Push DISPLAY once or twice to select e Push MENU one or more times to select i Push F 2 F l to program the frequency into a memo pad When you write a 6th frequency and operating mode the oldest written frequency and operating mode are automatically erased to make room for the new set tings Y NOTE Each memo pad must have its own unique Y combination of frequency and operating mode G memo pads having identical settings cannot be ZY written Calling up a frequency from a memo pad You can simply call up the desired frequency and op erating mode of a memo pad by pushing F 3 in the display e Make sure is selected in advance Both VFO and memory modes can be use e The frequency and operating mode are called up starting from the most recently written When you call up a frequency and an operating mode from memo pads with F 3 the previously dis played frequency and operating mode are automati cally stored in a temporary pad The frequency and operating mode i the temporary pad can be recalled by pushing F 3 F one or more times Y NOTE If you change the frequency or
56. the entire frequency range When the measured SWR is less than 1 5 the an tenna is well matched MODE YO aren TO F 3 DISPLAY SWR 1 15 2 3 o0 The best match is in this range MENU F 2 DISPLAY Frequency span Step bar indication Frequency indication mark Measure start indicator Span Push F 1 for 1 sec to change the se lected span Step bar Push F 2 to change the step bar 3 5 7 or 9 steps are available Marker Indicates the currently active step bar Start Flashes while the SWR is being mea sured 7 mm MEMORY OPERATION E Memory channels The transceiver has 105 memory channels includes 6 scan edge channels Memory mode is useful for quickly changing to often used frequencies Y NOTE During split frequency operation pro grammed memory contents can be called up to the Z SUB readout dot matrix portion of the display All 105 memory channels are tuneable which means the programmed frequency can be tuned temporarily with the main dial etc in memory mode MEMORY MEMORY TRANSFER OVER CHANNEL Cite SENNA A TOVFO writing CLEAR Independent transmit and receive frequencies and one mode in each jen 1 99 memory channel Yes Yes Yes In addition tone frequencies can also be stored for repeater use One frequency and one mode in Scan edges a each memory channel as scan Yes
57. the 11 o clock position Rotate RF SQL to the 11 o clock position for maxi mum sensitivity e Rotating counterclockwise from the maximum position re duces sensitivity e The S meter indicates receive sensitivity Adjusting squelch Removing non signal noise Rotate RF SQL clockwise when receiving no signal until the noise just disappears e RX indicator light goes out Rotating RF SQL past the threshold point invokes the S meter squelch this allows you to set a minimum signal level needed to open the squelch RF SQL When setting as RF gain squelch control Noise squelch FM mode Recommended level Pa Squelch ae wis TAN Maximum open RF gain S meter squelch adjustable range eWhen functioning as RF gain control Squelch is fixed open SSB CW RTTY only Maximum RF gain Adjustable range Minimum RF gain d x eWhen functioning as squelch control RF gain is fixed at maximum Noise squelch Noise squelch FM mode threshold S meter squelch FM mode BA threshold Squelch is gt mer spen squelch Shallow s Deep 24 25 3 BASIC OPERATION E Dial lock function The dial lock function prevents accidental changes caused by the tuning dial Push LOCK to turn the dial lock function ON and OFF LOCK indicator lights while the dial lock function is activated LOCk Lights while the dial
58. the nuts then solder the filter s pins Return the MAIN unit to the original position Soldering points e Make sure to attach the grounding spring to the original position Connect P2 and P4 to J2 and J1 respectively Replace the top cover E UT 106 DSP RECEIVER UNIT OPTION UNIT INSTALLATIONS AND SETTINGS 15 Open the transceiver top cover as shown on p 86 Remove the 4 pin connector P2451 from main CPU shielding case on the MAIN unit top side and plug it into J1 of the UT 106 O 2451 Front side Main CPU shielding case MAIN unit P2451 top side pean Plug the 4 pin connector P1 from the UT 106 into J2451 on the MAIN unit Plug the supplied flat cable into J3 on the UT 106 and J2453 on the MAIN unit e Be careful of the orientation of the flat cable Attach the UT 106 to the main CPU shielding case using the existing guide for alignment as illustrated at right above Front side 00 01000 9 S00 1 6 wo Q ORLO 8 g U ose P o o 9 z a one Tn Tn Reassemble the transceiver E MB 72 CARRYING HANDLE The optional MB 72 CARRYING HANDLE is convenient when carrying the transceiver for DX peditions field operation etc Tighten the s
59. types oo eee c eee eee eee eeeeeee eee eeneees 61 M Preparation ic sicecesensne he ia cede 61 E Programmed scan operation 62 E Memory scan operation ceeeeeeee eee 62 E Select memory scan operation 04 63 W Priority Watch 00 eee cee eee eee eeeeeeeeeeeees 63 9 ANTENNA TUNER OPERATION 64 66 E Antenna tuner operation 0 eeeeee 64 Internal antenna tuner 20eeee 64 Q Tuner operation eneee 64 Optional external tuner operation 65 Optional AT 180 AUTOMATIC ANTENNA TUNER Operation 65 Optional AH 4 AUTOMATIC ANTENNA TUNER Operation 66 10 DATA COMMUNICATION 67 70 E Connections for packet ceecee 67 When connecting to DATA socket 67 When connecting to ACC socket 67 When connecting to MIC connector 67 E Packet AFSK operation eee 68 Frequency indication during AFSK operation 68 SSB D mode selection eee 69 Carrier point setting 69 Adjusting the transmit signal from the TNC 70 11 CONTROL COMMAND 71 73 E Remote jack CI V information 71 CI V connection example eeeeeeeeees 71 S Data tormat s aa a ee aa ata ak al tae 71 Q Command table aeee 72 Band stacking register eee 73 Codes for memory keyer contents 7
60. used for each band ina band stacking register This is convenient for contest operation etc The tables below show the quick band change default settings for each band Select 47 e Push DISPLAY once or twice to select e Push MENU one or more times to select 4 Push F 1 F 2 or F 3 to select a band stacking register e The default settings for F 1 F 2 F 3 are 7 14 21 MHz bands respectively To change the settings for F 1 F 2 or F 3 from their defaults push F 1 F 2 or F 3 for 1 sec one or more times to until the desired band ap pears in the display above the corresponding switch The last used frequency and mode for the selected band are displayed FREQUENCY 1 9 MHz 1 90000 MHz 3 5 MHz 3 55000 MHz 7 MHz 7 05000 MHz 10 MHz 10 12000 MHz 14 MHz 14 10000 MHz 18 MHz 18 10000 MHz 21 MHz 21 20000 MHz 24 MHz 24 95000 MHz 28 MHz 28 50000 MHz 50 MHz 50 10000 MHz General 15 00000 MHz 1 83000 MHz for Italy version 10 20 50 MHz band is not available for some version General refers to the general coverage receiver the display and the range varies according to version Display shows the default bands for the quick band change function Display shows F 2 has been changed from its default of the 14 MHz band to the general receiver band 22 3 BASIC OPERATION E Operating mode s
61. voltage retained by the keyer is less than 0 4 V 4 when the key is ON TUNER CONTROL SOCKET TUNER p 14 Accepts the control cable from an optional AH 4 HF 50 MHz AUTOMATIC ANTENNA TUNER DC POWER SOCKET DC13 8V p 15 Accepts 9 0 15 87 V DC through the supplied DC power cable gy NOTE DO NOT use a cigarette lighter socket as a power source when operating in a vehicle The plug may cause voltage drops and ignition noise may be 4 superimposed onto transmit or receive audio PANEL DESCRIPTION 1 DATA socket DATA PIN No NAME DESCRIPTION 1 DATA IN Input terminal for data transmit 1200 bps AFSK 9600 bps G3RUH GMSK 2 GND Common ground for DATA IN DATA OUT and AF OUT 3 PTTP PTT terminal for packet operation Connect ground to transmit data 6 5 z 3 4 DATA OUT Data out terminal for 9600 bps operation only ug 5 AF OUT Data out terminal for 1200 bps operation only Rear panel view Squelch out terminal Becomes ground level when the transceiver receives a signal which opens the squelch 6 SQ e To avoid unnecessary TNC transmission connect squelch to the TNC to inhibit trans mission when receiving signals e Keep audio output at a normal level otherwise a SQ signal will not be output ACC socket ACC PIN No NAME DESCRIPTION SPECIFICATIONS Outp
62. want to operate You will notice the tuning speed TS is 10 Hz resolution Page 20 will instruct you on how to set the tuning speed TS for 1 Hz resolution O TO IO SSS O 3 Adjust audio output Adjust this control to a comfortable audio level AF RF SQL Decreases y No audio output Max audio output What are you hearing Stop and focus on what you are hearing Do you hear a lot of noise Is the signal intelligible Are you set up for the right mode How about the filters 1 Verify mode QUICK REFERENCE GUIDE Although your IC 703 will automatically select USB or LSB in the HF bands it will not select any of the other modes You will need to select the proper mode whether CW RTTY AM or FM 0 o oc c 2 MODE Hint The Band Stacking Register will memorize the last frequency used in the band as well as the Mode Filter Tuner and AGC settings This makes band hoping much easier 2 Reducing interference some functions may require an optional unit depending on version Your IC 703 has many features to reduce QRM and QRN from the desired signal a Noise Reduction The noise reduction system on your IC 703 is part of the DSP This is used to re duce the hiss and QRM levels Select DSP menu e Push DISPLAY once or twice to select e Push MENU one or more times to select 2
63. 255 fast 04 Read operating mode OE Level data COMP Level setting 0 0 to 10 10 05 Set operating frequency OF Level data Break IN DELAY setting 20 2 0d 06 00 Select LSB to 130 13 0d 01 Select USB 15 01 Read squelch condition 02 Select AM 02 Read S meter level 03 Select CW 11 Read RF power meter 04 Select RTTY 12 Read SWR meter 05 Select FM 13 Read ALC meter 07 Select CW R 16 02 Preamp O OFF 1 preamp 1 08 Select RTTY R 2 preamp 2 07 Select VFO mode fo 17 AGC selection 1 Fast 2 Slow 00 Select VFOA 0 p 2200 Noise bianker O OFF 1 ON i Eevee eaueos ST tC 40 Noise reduction 0 OFF 1 ON Bo Exchange VFOAandVFOB Ee oe AUIS noleh ee lg hal e ad 42 Subaudible tone O OFF 1 ON 08 Select memory mode 0001 0105 Select memory channel 1A 0100 3b 0105 09 Memory write OA E Memory to VFO 47 Break in 0 OFF 1 semi break 0B Memory clear in 2 full break in 0E 00 Scan stop 19 00 Read the transceiver ID 01 Programmed memory scan start 1A 00 Send read memory contents OF 00 Turn the split function OFF amp 4 oY Send read band stacking register 01 Turn the split function ON contents see p 73 for details 10 00 Select 10 Hz 1 Hz tuning step 02 Send read memory keyer con 01 Select100Hztuningstep ff tents see p 73 for details 02 Select 1 kHz tuning step 0301 Send read beep emission set 03 Select 5 kHz tuning step O OFF 1 ON 04 Select9kHztuningstep
64. 3 Codes for memory name contents 73 12 SET MODE _ cccceceeeeceeeeeeeeeeeeee 74 82 MB Generali 2cuiiace aoe Tees 74 Q Quick set mode operation ee 74 Q Initial set mode operation ee 74 E Quick set mode items 75 M Initial set mode items o on ennnen 76 1 Maximum output power setting 76 2 Power save setting o c 76 3 Simple mode setting eee 76 4 Mode availability 0 0 0 ees 76 5 Output power setting for mode 76 6 Confirmation beeps cee 77 7 Band edges beeps ccecce 77 8 Beep level adjustment 77 9 Beep audio level limit eee 77 10 CW carrier point setting 77 11 CW side tone level o oo eee 77 12 CW side tone level limit 0 00 77 13 SSB CW frequency shift setting 78 14 Display backlighting eee 78 15 Key switch backlighting ceecee 78 16 Light timer setting 0 0 0 ee 78 17 LED brightness eee 78 18 Automatic power OFF 0065 78 19 Current intercept point ee 79 20 RF gain squelch control 5 79 21 Sub dial setting eee 79 22 Optional filter selection 02 0 5 79 23 Peak meter hold setting 0 79 24 Quick split function o e 79 25 Split lock function o e 80 26 Split offset frequency 0 0 80 27 Scan resume condition 80 28 Scanning speed
65. 4 000 MHz Transmit 1 800 1 999 MHz 3 500 3 800 MHz 7 000 7 100 MHz 10 100 10 150 MHz 14 000 14 350 MHz 18 068 18 168 MHz 21 000 21 450 MHz 24 890 24 990 MHz 28 000 29 700 MHz 50 000 52 000 MHz Italy 10 20 Receive 1 830 1 850 MHz 3 500 3 800 MHz 7 000 7 100 MHz 10 100 10 150 MHz 14 000 1 4 350 MHz 18 068 18 168 MHz 21 000 21 450 MHz 24 890 24 990 MHz 28 000 29 700 MHz Transmit 1 830 1 850 MHz 3 500 3 800 MHz 7 000 7 100 MHz 10 100 10 150 MHz 14 000 14 350 MHz 18 068 18 168 MHz 21 000 21 450 MHz 24 890 24 990 MHz 28 000 29 700 MHz 96 Count on us IC 703 02 12 Europe HF 50 M IC 703 10 20 Italy HF only A 6241H 1EX Printed in Japan 2003 Icom Inc lt Intended Country of Use gt mM GER E AUT E GBR E IRL E NOR FRA L ESP WE SWE E NED C PORE DEN BEL OITA W FIN m LUX C GREC SUI lt Intended Country of Use gt GER EFRA E ESP SWE AUT CO NED E PORT DEN GBR O BEL MITA FIN IRL LUX O GRE O SUI O NOR Icom Inc 1 1 32 Kamiminami Hirano ku Osaka 547 0003 Japan
66. 5 Connects 3 pin DC cable OPC 1229 to 6 pin connector 92 Mm 18 menu cue power ON Initial set mode i T R Power OFF then ON to exit initial set mode iia one 93 Max output power setting Power save setting Simple mode setting Mode availability Power setting for mode Confirmation beeps Band edge beeps Beep level adjustment Beep audio level limit CW carrier point setting CW side tone level CW side tone level limit Frequency shift setting Display backlighting Key switch backlighting Light timer setting LED brightness Automatic power OFF Current intercept point RF gain squelch control Sub dial setting Optional filter selection is set to ON box items are undisplayed Peak meter hold setting Quick split function Split lock function Split offset frequency Scan resume condition Scanning speed UP DN speed Noise blanker in AM mode Available memo pads Power ON check function Auto tune start function PTT tune function Tuner switch condition Packet data speed Voice synthesizer lang Voice synthesizer speed S meter level speech Cl V address setting Data transfer rate Cl V transceive Cl V data length MENU GUIDE 18 in memory mode
67. 6 37 4 RECEIVE AND TRANSMIT Memory keyer set mode This set mode is used to set the memory keyer repeat time and indication type of the messages e Setting contents Select CW mode with MODE Enter the memory keyer menu Push MODE for 1 sec to enter the memory keyer send menu Push DISPLAY momentarily to enter the memory keyer menu Q Push F 3 1 to enter the memory keyer set mode Push MENU to select the desired set item M CH or A V can also be used Set the desired condition using the main dial Push DISPLAY twice to return to the memory keyer send menu D Main dial M CH MENU F 3 mi Hi TE Repeat time When sending CW using the repeat timer this item sets the time between transmission 1 to 60 sec in 1 sec steps can be selected i f Message display This item sets the indication type of the messages pre set characters n Normal indication default F 1 fi F 2 Fe za F 3 3 __ First three characters of the massages are in dicated e g F E F D E F E 3 cn First three palace of the massages and contest number are indicated e g F 1 i2te F 2 i 1 F 3 F M4 RECEIVE AND TRANSMIT 4 E Operating RTTY Connections for RTTY FSK Rear panel oTo 0000
68. 96 SSB CW RTTY 2 8 kHz 6 dB FL 257 SSB CW RTTY 3 3 kHz 6 dB Optional filter Although the FL 96 is not listed on the option list IC 703 would take FL 96 as well as other optional filter e Optional filter installation and selection tables SSB CW RTTY Bandwidth i i Normal CFWS455G 8 k n Narrow Medium Wide AM Filter Narrow FL 65 2 4 k No oo FL 65 2 3 k Fii Normal Through 15 k 2 Narrow CFWS455G 8 k FL 52A FL 52A 500 FL 65 2 3 k FL 53A FL 53A 250 FL 65 2 3 k FL 96 FL 65 2 3 k FL 96 2 8 k 2 3 k 2 3 k FL 222 FL222 1 8 k FL 65 2 3 k FL 257 FL 65 2 3k FL 257 3 3 k E Peak meter hold W 7 AL SET MODE FUNCTION FOR RECEIVE 5 The peak meter hold function freezes the highest dis played bar segment in any meter function for about 0 5 sec so that you can more easily read the meter This function can be turned ON and OFF in initial set mode item gt see p 79 EXAMPLE S13 5 7 9 20 40 GiIIe EE S1 3 579 20 40 ail E 60dB 60dB Initial reception of a signal results in an S meter reading of 40 cB The highest indica ted bar remains dis played for about 0 5 sec even when the signal strength de creases E DSP Functions may require an optional unit depending on version se
69. AKER position an external speaker can be connected This is convenient for mobile or outdoor operation Back of the front panel Ty PHONES A A SPEAKER Y l TUNER SWITCH TUNER pgs 64 66 Push momentarily to toggle the automatic an tenna tuner function ON and OFF bypass e Lights red when the automatic antenna function is ON Push this switch for 1 sec to manually tune the antenna When the tuner cannot tune the antenna the tuning circuit is bypassed automatically after 20 sec TUNER c Lights while the automatic tuning function is activated FRONT PANEL LATCH p 12 Pull away from the transceiver towards yourself when looking at the front of the transceiver to de tach the front panel from the main body of the trans ceiver PRE AMP ATTENUATOR SWITCH P AMP ATT p 46 Push momentarily to turn the preamp ON or OFF Push for 1 sec to turn the 20 dB attenuator ON push momentarily to turn the attenuator OFF e Lights green when the preamp is ON lights red when the 20 dB attenuator is ON P AMP ATT es Lights green while the preamp is activated lights red while the attenuator is activated V What is the preamp The preamp amplifies received signals in the front end cir cuit to improve the S N ratio and sensitivity Turn ON P AMP when receiving weak signals V What is the attenuator The attenuator prevents a desired signal fr
70. All common keyboard characters ASCII characters 33 to 126 can be used including numerals and punc tuation marks Calling up memory names Select the 4 display Push DISPLAY once or twice to select e Push MENU one or more times to select Select a memory channel with M CH e Editing programming memory names Call up the desired memory channel name as above Push F 3 3 to enter memory name edit mode appears briefly then a cursor blinking under the first character position 3 Rotate the main dial to select the desired charac ter then advance the cursor position e Pushing F 3 moves the cursor to the right F 1 moves the cursor to the left Pushing F 2 deletes the character Repeat this procedure until all desired characters have been selected Push MENU to exit memory name edit mode e The iz display re appears and the programmed mem ory name is displayed E Memo pads The transceiver has a memo pad function to store fre quency and operating mode for easy write and recall The memo pads are separate from memory channels The default number of memo pads is 5 however this can be increased to 10 in initial set mode if desired p 80 MEMORY OPERATION 7 Memo pads are convenient when you want to memo rize a frequency and operating mode temporarily such as when you find a DX station in a pile up or when a
71. BASIC OPERATION 3 e 1 Hz and 10 Hz tuning steps When neither the quick tuning step or programmable tuning step W appear rotating the main dial changes the frequency in increments of 1 or 10 Hz These tuning steps are only available in SSB CW and RTTY modes Select SSB CW or RTTY mode if necessary Push TS for 1 sec to toggle between the 1 Hz and 10 Hz step settings eWhen the 1 Hz step is selected the 1 Hz digit appears in the frequency indication when the 10 Hz step is se lected the 1 Hz digit disappears from the frequency in dication e Rotating the main dial changes the frequency 1 Hz or 10Hz tuning step MODE TS Main dial Rotating the main dial changes the frequency in 10 Hz steps Rotating the main dial changes the frequency in 1 Hz steps e 1 MHz quick tuning step The quick tuning step function allows you to change the frequency in 1 MHz steps when rotating the main dial This function is only available in FM and AM modes Select FM or AM mode if necessary Push TS momentarily to toggle between the 1 MHz tuning step and the programmable tuning step W appears above the 1 MHz indicator when the 1 MHz tuning step is selected e Rotating the main dial changes the frequency 1 MHz or set tuning step MODE Quick tuning step indicator TS Main dial Rotating the main dial changes the frequency in 1 MHz steps
72. D 0 5 1 8 MHz 13 pV 1 8 28 MHz 28 29 7 MHz 50 54 MHz 0 16 pV 2 0 uV e Squelch sensitivity threshold preamp ON SSB CW RTTY AM Less than 5 6 pV FM Less than 0 32 pV e Selectivity typical SSB CW More than 2 4 kHz 6 dB Less than 4 0 kHz 60 dB More than 9 0 kHz 6 dB Less than 20 0 kHz 50 dB FM More than 15 0 kHz 6 dB Less than 30 0 kHz 50 dB Without optional filter and with mid band selected Spurious and image rejection ratio HF bands More than 70 dB 50 MHz band More than 65 dB except IF through e Audio output power More than 0 5 W at 10 distortion with an 8 Q load at 9 6 V DC More than 1 0 W at 10 distortion with an 8 Q load at 13 8 V DC RIT variable range 9 99 kHz max PHONES connector 3 conductor 3 5 d mm 1 8 Q EXT SP connector 2 conductor 3 5 d mm 8 Q AM FM N E Antenna tuner e Matching impedance range HF bands 16 7 to 150 Q unbalanced Less than VSWR 3 1 50 MHz band 20 to 125 Q unbalanced Less than VSWR 2 5 1 VSWR 1 5 1 or less Less than 1 0 dB after tuning e Tuning accuracy e Insertion loss 90 1 7 OPTIONS AT 180 HF 50 MHz AUTOMATIC ANTENNA TUNER AH 4 HF AUTOMATIC ANTENNA TUNER Fully automatic antenna tuner with preset memories for each 100 kHz Unique auto matic tuner on function is available See p 89 for AT 180 specifications Specially designed to tune a long wire an tenna for
73. D p 60 eae Push to call up a memo pad S2 functions DURING VFO MODE ao D D amp SCAN pgs 61 63 i Push to start or stop the scan function PRIORITY WATCH p 63 pemon Push to start or stop the priority watch F 2 VFO MEMORY ii pri Push momentarily to toggle between VFO and memory modes p 56 Push for 1 sec to transfer the frequency and operating mode in the selected mem ory channel to a VFO p 58 SELECT SCAN p 61 Push to toggle the select setting ON and OFF for the selected memory channel QUICK BAND CHANGE FUNCTION p 22 This item provides access to the band stacking regis ter By default the 7 14 and 21 MHz bands are dis played Push F 1 F 2 or F 3 for 1 sec to select a new band if desired A mode is memorized along with the frequency for each band S4 functions UT 106 is required for some version ED CD Fa AUTOMATIC NOTCH FILTER p 50 This function automatically attenuates beat tones tuning signals etc even if F 1 they are moving NOISE REDUCTION p 50 a This function reduces noise components and picks out desired signals which are F 2 buried in the noise NOISE REDUCTION LEVEL DISPLAY p 50 This switch displays the noise reduction level when pushed 1 PANEL DESCRIPTION E Rear panel ANTENNA CONNECTOR ANT p 13
74. ECEIVE 46 50 E Simple band scope ceeeeeeee eee eeee eee 46 E Preamp and attenuator eee eee 46 MERIT function o ae 47 WIF shift function cesc nnee 47 W Noise blanker eceeeereerrerererrnren 48 Noise blanker level set mode 48 E AGC time constant eee 48 E Optional filter selection e 49 M Peak meter hold isecen 50 E DSP Functions may require an optional unit depending on version eccerre 50 ANF Automatic Notch Filter function 50 NR Noise Reduction function 50 6 FUNCTION FOR TRANSMIT 51 55 E Split frequency operation eeee 51 Quick split function 2 0 0 eee 52 MiMeter selection i e 52 MVOX operation eee eee e eee eee eee eeeee 53 VOX Set mode 1 00 eee ee eee e eee eeeee ee 53 MSpeech compressor ceceeeeeeeeeeeeeeeees 54 Compression level set mode 55 54 NESW einvci dence E A cant E E 55 Q Measuring SWR nosece 55 7 MEMORY OPERATION 2 2 000000 56 60 E Memory channels ereere 56 E Memory channel selection 00000 56 E Memory programming seeen 57 M Memory clearing aeee 58 MFrequency transferring seeeeeeeeeee eee 58 Mi Memory names 0 ce cece eee eee eee eee eee eeees 59 Mi Memo pads ceeeeeeeeeeeeeeeeeeeeeeeeeeees 60 8 SCAN OPERATION 0 0cceceeeeeeees 61 63 W Scan
75. ENU one or more times to sele NB appears when the noise blanker is set to ON Push F 2 i for 1 sec to enter the noise blanker set mode to turn the AGC eu gain control p 48 While i is selected push F 3 AGC fast and AGC slow Push DISPLAY once or twice to select Push MENU one or more times to sele FAGc appears when the fast time constant is se lected to select elF shift p 47 Rotate SHIFT control e Noise reduction p 50 While 1 is selected push F 2 noise reduction ON and OFF e Push DISPLAY once or twice to select e Push MENU one or more times to select e Push F 3 HFi then rotate M CH to adjust the noise reduction level NR appears when the noise reduction is set to ON to turn the e Auto notch filter p 50 While is selected push F 1 auto notch filter function ON and OFF ANF appears when the noise reduction is set to ON to turn the oy function gt While ii is selected push F 1 the 1 4 function ON and OFF e Push DISPLAY once or twice to select e Push MENU one or more times to select to turn Convenient functions for transmit Break in function p 32 While ii is selected push F 2 to enter the keyer set mode Push DISPLAY once or twice to select i Push MENU one or more times t
76. ER Push and hold for 1 sec to start manual tuning If the tuner cannot reduce the SWR to less than 1 5 1 after 20 sec of tuning the TUNER light goes out In this case check the following ethe antenna connection and feedline ethe antenna SWR p 55 meter function Through inhibit HF bands only The AT 180 has a through inhibit condition When se lecting this condition the tuner can be used at poor SWR s In this case automatic tuning in the HF bands activates only when exceeding SWR 3 1 Therefore manual tuning is necessary each time you change the frequency Although termed through inhibit the tuner will be through if the SWR is higher than 3 1 after tuning CONVENIENT e Tuner sensitive condition HF bands only If you require critical tuning at any time during trans mission select the tuner sensitive condition See p 81 for selection e Automatic tuner start HF bands only If you want to turn OFF the tuner under conditions of VSWR 1 5 1 or less use automatic tuner on and turn the tuner OFF See p 81 for turning the function ON and OFF ANTENNA TUNER OPERATION 9 Optional AH 4 AUTOMATIC ANTENNA TUNER Operation The AH 4 matches the IC 703 to a long wire antenna more than 7 m 23 ft long 3 5 MHz and above See p 16 for connection e See the AH 4 instruction manual for AH 4 installation and antenna connection details AH 4 setting example For mobile operation
77. F 1 again to turn off the split function after you finish the repeater operation CONVENIENT Each memory channel can store a tone frequency and an offset frequency as well as the operating fre quency Store repeater information into memory chan nels for quick and easy access to repeaters MODE Main dial TIT iz gee et a S1 3 579 20 40 60dB VFOA Po Turn the quick split function ON Initial set mode default is ON Set the tone fre quency See below table for available fre quencies e Available subaudible tone frequencies Unit Hz 67 0 85 4 107 2 136 5 165 5 186 2 210 7 254 1 69 3 88 5 110 9 141 3 167 9 189 9 218 1 71 9 91 5 114 8 146 2 171 3 192 8 225 7 74 4 94 8 118 8 151 4 173 8 196 6 229 1 77 0 97 4 123 0 156 7 177 3 199 5 233 6 79 7 100 0 127 3 159 8 179 9 203 5 241 8 82 5 103 5 131 8 162 2 183 5 206 5 250 3 FUNCTION FOR RECEIVE E Simple band scope 5 E This function allows you to visually sweep an area surrounding the set frequency for other signals De tected signals are indicated graphically in the dot ma trix section of the display NOTE Use the attenuator or turn OFF the preamp Y when using the band scope on a band containing a lot 4G of noise Set a mode and frequency Select ti e Push DIS
78. IONS cccccccescesceueeneeees 90 MM Generale aie r i e 90 Erans miter e nuia n aeae 90 W Receiver sssscsrrseerirresrrrrrenrrrnrneerrnnn 90 M Antenna tuner iieii e i a iaa 90 TZ OPTIONS i cdsocieccascveriieetcacenaeiegs ceed 91 92 18 MENU GUIDE cccccceeeeeeeeeeaees 93 94 19 ABOUT CE cccccecseceeceeneeseeeeees 95 96 ick Reference N BERRBEEEREERRREREeeeE MM QUICK REFERENCE GUIDE E Installation 1 Install a ground system for DC noise suppression and RFI suppression 2 Install your DC power supply 3 Install lightning protection This will help protect more than your gear 1 Grounding your Shack 4 Install and connect an antenna system for the ap propriate bands of operation 5 Connect other peripheral equipment This includes microphones headsets TNC amplifiers and any other equipment necessary to make your shack complete Although your radio will operate by connecting the DC power supply and antenna it is necessary to have a good ground system in your shack A ground connec tion is the electrical contact between the common point of an electrical or electronic system and the earth A good earth ground is necessary to prevent electrical shock eliminate problems from RFI and DC noise With more electronic devices being used today it is also important to reduce RFI and EMI Although you may not see interference in your shack without a grounding system
79. IT on Indicator lights red while RIT function is activated RIT Push for SUB 1 sec HIF shift function The IF shift function electronically changes the pass band frequency of the IF intermediate frequency and cuts out higher or lower frequency components of the IF to reject interference The function shifts the IF frequency up to 1 2 kHz in 15 Hz steps in SSB CW RTTY modes and up to 250 Hz in 3 Hz steps in CW D RTTY W modes The IF shift is not available in FM and AM modes 0 Narrow Adjust the SHIFT control for a minimum interfer ence signal level e The audio tone may be changed while the IF shift is in use Set the shift control to its center position when there is no interference Graphic display The IF shift is displayed graphically for about 1 sec each time the shift control is rotated M CH gt SHIFT M CH gt SHIFT M CH SHIFT Shifts low Center Shifts high FUNCTION FOR RECEIVE 5 E Noise blanker The noise blanker reduces pulse type noise such as that generated by automobile ignition systems This function is not effective for FM mode or for non pulse type noise If you don t want to use the noise blanker for AM communications the 8 HI HE item in initial set mode must be turned OFF ON is the default set ting p 80 Select H e Push DISPLAY once or twice to select i e Push MENU one or more times to select t4
80. IT E Split frequency operation Split frequency operation allows you to transmit and receive on two different frequencies Split frequency operation uses 2 frequencies one in VFO A and the other in VFO B Following is an example of setting 7 057 MHz CW mode in VFO A for receiving and 7 025 MHz CW mode in VFO B for transmitting Select VFO A and set the frequency to 7 057 MHz CW F 2 F 3 is available when is available when Push or push and hold F 1 5 F play gt Push EPL activates split only Push and hold 2 FL next page 3 To change the receive frequency rotate the main dial to change the transmit pe aueneys rotate the main dial while pushing F 3 The transmit frequency can be monitored while push ing F 3 e Split operation is now set for receive on 7 057 MHz CW and transmit on 7 025 MHz CW To exchange the transmit and receive frequencies push F 2 H E in PHE CONVENIENT The 4 display conveniently shows the transmit fre pa during split frequency operation and pushing F 3 allows you to change the transmit frequency e Split lock function The split lock function is convenient for changing only the transmit n Otherwise accidentally re leasing the F 3 i2 switch while rotating the main dial changes the receive frequency The split lock s ef fectiveness can be selected in initial set mode item for both receive and tr
81. NEL DESCRIPTION METER SELECTION p 52 Selects the type of meter displayed dur ing transmit in the function display Power ALC or SWR metering can be se lected Only an S meter is available for receive M4 functions DURING SSB AM OPERATION DURING FM OPERATION m GCG amp VOX FUNCTION p 53 i irp Push momentarily to toggle the VOX func ot tion ON and OFF VOX appears when the VOX function is ON Push for 1 sec to enter the VOX set mode The VOX delay VOX gain and ANTI VOX can be set in VOX set mode V What is the VOX function The VOX function voice operated transmission starts trans mission without pushing the PTT switch when you speak into the microphone then automatically returns to receive when you stop speaking SPEECH COMPRESSOR p 54 Push momentarily to toggle the speech compressor ON and OFF F 2 COM appears when the speech compres sor is ON Push for 1 sec to enter the compression level set mode The COMP gain can be set in compression level set mode AGC p 48 S Push to change the time constant of the AGC circuit e Facc appears when the fast time constant is selected 1 4 FUNCTION Push to toggle the 1 4 tuning function ON and OFF When the 1 4 function is ON a bar appears under the 1 4 indication and fine tuning can be used
82. NS 11 16 Just listening 1 000 cece seeeweeen se eenneerees V W Unpacking caccreciesssculooeserenedassuesneieciecasctaidls 11 1 Select the desired band V W Selecting a location 00cceeeeeeeeeeeeeeeees 11 2 Tune to the desired frequency V ei HA acces ascot seseeeetatehvloreeetacees 11 3 Adjust audio output s ssssseenssereee eee V E Antenna connection eeose 11 What are you hearing 600 ce eee VI Winstallation eeen eerren 12 f Verify MOGG sa eos ana aene iaat VI Single body mounting S E E 12 2 Reducing interference OEST PEE E 12 Some functions may require Front panel separation 0 cccceeeeeees 12 an optioanl unit depending on version VI Front panel mounting seeeeeeeeeee 12 H Ready to call CQ eseesseseeseeeeeeeeesenes IX M Required Connections 13 1 Setting up your Mic Gain see IX M Advanced connections cccccceeeeeeeee 14 2 Speech COMPFeSSOL eeeeeeereeeeeees X MDC Power voltage cecce 15 MDC Power supply connections 5 15 E Battery Connections i e 15 E External antenna tuners and linear amplifier 16 SUPPLIED ACCESSORIES The transceiver comes with the following accessories Qty Hand microphone HM 103 cccccccceeeeeeeeees 1 DC power cable OPC 1229 ceececscecseeeeeees 1 Spare fuse FGB 4A occ ccccccccececsecscteeeteesees 3 WACO cabl
83. O o ICOM INSTRUCTION MANUAL HF 50 MHz ALL MODE TRANSCEIVER IC 703 Icom Inc FOREWORD IMPORTANT Thank We understand that you have a choice of many different radios in the market place We want to take a couple of moments of your time to thank you for mak ing the IC 703 your radio of choice and hope you agree with Icom s philosophy of technology first Many hours of research and development went into the design of your IC 703 FEATURES ODSP features AF DSP UT 106 psp un T required some version OAIll mode capability covering 160 6 m O9 0 15 87 V operation OCompact with detachable front panel O 0 5 ppm of high frequency stability O Built in antenna tuner O Simple band scope function READ THIS INSTRUCTION MANUAL CAREFULLY before attempting to operate the transceiver SAVE THIS INSTRUCTION MANUAL This manual contains important safety and operating in structions for the IC 703 EXPLICIT DEFINITIONS WORD DEFINITION Personal injury fire hazard or electric A WARNING shock may occur CAUTION Equipment damage may occur If disregarded inconvenience only No NOTE risk or personal injury fire or electric shock PRECAUTION A WARNING RF EXPOSURE This device emits Radio Frequency RF energy Extreme caution should be observed when operating this device If you have any questions regarding RF exposure and safety standards please refer to t
84. PLAY once or twice to select i Push MENU one or more times to select i Push F 1 one or more times to select the desired steps e Each dot corresponds to a step for the indicated fre quency 0 5k 1k 2k 5k 10k 20k and 0 1M 100 kHz can be set for the scope step Push F 3 to start the sweep oA am BELOW flashes while sweeping e The receive audio is muted while sweeping Rotate the main dial if you want to monitor the dis played signals The sweep marker indicates the location of the dis played frequency in the sweep readout e If the displayed frequency is outside of the sweep read out determined by the sweep width the sweep marker flashes Push F 2 to return the frequency to the start of a sweep e The sweep marker moves back to the center position Main dial Select sweep width F 1 Start sweep lt F 3 Sweep is finished F 3 again Move sweep marker main dial Returns to previous frequency F 2 E Preamp and attenuator The preamp amplifies received signals in the front end circuit to improve the S N ratio and sensitivity Turn this function ON when receiving weak signals The attenuator prevents desired signals from distort ing when very strong signals are near the desired fre quency or when very strong electric fields such as from broadcasting stations are near your location Pus
85. Peak hold ON default D te i ot Peak hold OFF When this item is set to ON pushing F 1 F 1 for 1 sec in the 1 display sets the undisplayed VFO fre quency to the displayed VFO frequency plus the split offset and activates split operation Quick split function rere Quick split function ON default Le eee Quick split function OFF is set to ON marked items are undisplayed SETMODE 12 BT Split lock function When this item is ON the main dial can be used to adjust the transmit frequency while pushing even when the lock function is activated Split lock function OFF default Split lock function ON Split offset frequency This item sets the offset difference between transmit and receive frequencies for the quick split function Available offset frequencies are 9 999 to 9 999 MHz in 0 001 MHz 1kHz steps bah Z w r w Z Z Default is 0 000 MHz This item sets the scan resume function ON or OFF on Scan resumes 10 sec after stopping on a sig nal or 2 sec after a signal disappears oFF Scan does not resume after stopping on a sig nal For the priority watch setting to OFF pauses the watch until signal disappears and scan resumes a Scan resume function is turned ON default I mr Scan resume function is turned OFF K Scanning speed This item sets the
86. Push F 2 to activate the noise reduction func tion DSP and NR appear when the function is ON Noise reduction ON Noise reductio b Adjusting the Noise Reduction The noise re duction is completely variable on how much of the DSP Noise Reduction is used Push F 3 level Rotate the M CH control to set the noise reduc tion level 3 Push F 3 set mode to indicate the noise reduction to exit the noise reduction level Hint How far you advance the NR control will determine how much the noise can be effectively reduced Ad justing the noise reduction level too high may cause some distortion to occur on the received signal The noise reduction level should only be set as high as is necessary Use this setting along with RF gain NB noise blanker if needed and IF filters as well to minimize the effects of noise on the target signal O a o Sem a xX x 2 5 O VI Vil QUICK REFERENCE GUIDE c Automatic Notch The automatic notch will track up to heterodynes This is helpful for eliminating annoying transmitter tune up tones on any band and to minimize continuous tone heterodynes en countered on the 40 meter phone bands at night for example Once selected an icon will appear ANF on the display Select e P
87. SSB D FM AM Push for 1 sec to toggle the following operating modes USB LSB CW lt gt Memory keyer mode RTTY lt SSB D SSB data mode FM lt gt AM RECEIVE TRANSMIT INDICATORS RX TX RX Lights green while receiving a signal and when squelch is open TX Lights red while transmitting MAIN DIAL Changes the displayed frequency sets the values of selected initial set mode items etc PANEL DESCRIPTION 1 UP DOWN BAND SWITCHES 4 BAND Push momentarily to select a band Can also be used to advance or back the quick set mode items initial set mode items etc Push and hold to scroll through the bands contin uously MAIN DIAL TENSION LATCH Selects the main dial tension 2 positions are available MICROPHONE CONNECTOR p 10 Modular type microphone connector Accepts the supplied microphone HM 103 The optional OPC 589 can be used to connect an 8 pin microphone such as the SM 8 or SM 20 if desired A microphone connector is also available on the rear panel DO NOT connect 2 microphones simultaneously LOCK SWITCH LOCK Push momentarily to toggle the dial lock function ON and OFF e The dial lock function electronically locks the main dial When the optional UT 102 VOICE SYNTHESIZER UNIT is installed p 86 push for 1 sec to have the frequency etc announced UT 102 operation can be adjusted in the initial set mode p 82 LOCK 1 Lights while the lock
88. TANT T sescessivsssstscccacceaccasusstsiasscctaasveasmael i E Front panel RIE A EE AS A A AE EAE E 1 EXPLICIT DEFINITIONS cccccccecescesceseeeeens i E Multi function Switches cccccccccccccueeceees 4 PRECAUTION vississisustiscavedividiviivaiserievesiaasinane i OM1 functions 2 cece ccccccccccecccccccucccueeuunueuees 4 TABLE OF CONTENTS ceeeetseeeeeeeteeeeeees ii OM2 FUNCTIONS cccccceeseceecceceeeeeeeeneteeees 4 QUICK REFERENCE GUIDE I X a AR E A Mi Installation n PER incr lade Lak MRE 1 Grounding your Shack 0 see l SS TMCHONS srira in iin oaran ii 6 2 Installing your DC Power Supply l O S3 TUNCHONS cirie anen AE Ea 6 3 Installing lightning protection II S4 functions 4 Installing your antenna system raai II UT 106 is required for some version 6 5 Connect other peripheral equipment II MB Rear panel niscentre nerenin e 7 E Operation E a III AAN ET oocooooooovocoococoooeeeoeooooeeecccccc 8 1 VOCE osi anaa area vk gist a N AE III DACC SOCKC eo cece cco cc ccc cc ccc ce eee ce bee ee bese seeeeees 8 2 CW eres E sane tres ee ates Il M Function display 0cceeeeeeeeeeeeeeeeees 9 3 Other convenient items 08 IV W Microphone HM 103 o 10 E Your first contact cceceeeeeeeeeeeeeeeees IV Getting started cccceeceeeeeeeeeeeeeeee es IV 2 INSTALLATION AND CONNECTIO
89. Yes No edges for programmed scan E Memory channel selection O Select i functions e Push DISPLAY once or twice to select fi e Push MENU one or more times to select Hi Push F 3 to select memory mode Rotate M CH to select the desired memory chan nel e All memory channels including blank channels can be selected UPJ DN on the microphone rae pare a frequency To return to VFO mode push F 3 4 i pe cw bA rAr aoe LLILI VFOA hs fcH DE i USB eo F 3 m S epee D Do es Fe Lh LE ALLLILI M CH gt SHIFT ka MEMO loa f Ss USB a A Ar i i i ILLI g MEMO f fcH 56 57 7 MEMORY OPERATION E Memory programming Programming in VFO mode Select functions Push DISPLAY once or twice to select Push MENU one or more times to select 22 Set the desired frequency and operating mode in VFO mode lf you want to program the split frequency function pro gram both receive and transmit frequencies into VFO A and B then turn ON the split function lf you want to program a repeater function set a tone frequency pgs 44 45 in addition to the receive trans mit frequencies 3 Rotate M CH to select the desired memory chan nel Select memory mode to confirm the contents if desired BLANK appears if the selected memory channel is a blank channel and does not have conten
90. a sig nal differs depending on the scan resume condi GY tion p 80 resume on pauses for 10 sec Z resume off pauses until the signal disappears WAQAA A SQL MANU F 2 DISPLAY A CH Select VFO mode Select watching channel CE2 9 Push F 2 ANTENNA TUNER OPERATION O Hl E Antenna tuner operation Internal antenna tuner The internal automatic antenna tuner matches the transceiver to the connected antenna automatically Once the tuner matches an antenna the latching relays combination are memorized as a preset point for each frequency range 100 kHz steps Therefore when you change the frequency range the latching relays are au tomatically preset to the memorized combination Tuner operation CAUTION NEVER transmit with the tuner ON when no antenna is connected This will damage the transceiver Be careful of the antenna selection WB Qqv Push TUNER to turn the internal antenna tuner ON The antenna is tuned automatically when the antenna SWR is higher than 1 5 1 When the tuner is ON the TUNER indicator lights red e MANUAL TUNING Push TUNER for 1 sec to start manual tuning A side tone is emitted and TUNER indicator blinks while tuning lf the tuner cannot reduce the SWR to less than 1 5 1 after 20 sec of tuning the TUNER indicator goes out PTT TUNER START The tuner is always tuned when the PTT is pushed
91. a variety of in formation such as current functions of the F keys F1 to F3 memory channel names set mode items etc See p 94 for an overview of these indi cators METER READOUTS Shows receiving signal strength while receiving Shows one of transmit power meter ALC or SWR meter while transmitting FUNCTION INDICATORS NB appears when the noise blanker is activated VOX appears when the VOX function is se lected F BK appears when full break in operation is se lected and only BK appears when semi break in operation is selected COM appears when the speech compressor is activated Facc appears when the fast AGC function is se lected DSP INDICATORS Appear when the optional DSP unit UT 106 is in stalled and activated UT 106 DSP unit is optional for some version PANEL DESCRIPTION 1 E Microphone HM 103 UP DOWN SWITCHES UP DN LOCK SWITCH LOCK Change the operating frequency Locks the UP DN switches e Push and hold to change the frequency continuously Tuning step is 50 Hz when no TS indicator appears PTT SWITCH PTT Push and hold to transmit release to receive TECHNICAL INFORMATION e MICROPHONE CONNECTOR Rear panel view FUNCTION DESCRIPTION 8 V DC output Max 10 mA Frequency up Ground Frequency down Ground through 470 Q Squelch open LOW level 87654321 Squelch closed HIGH level
92. ad SSB carrier frequency 08 Level data Twin PBT outside setting 00 200 Hz to 40 200 Hz O max CCW 128 center 10 Hz steps 255 max CW 09 Level data CW pitch setting 0 300 Hz CW Clockwise CCW Counter Clockwise 72 73 11 CONTROL COMMAND Command table continued Command Sub command Description 1A 0314 Send read RTTY marker fre quency 0 1275 Hz 1 1615 Hz 2 2125 Hz i 0315 Send read RTTY shift width 0 170 Hz 1 200 Hz 2 425 Hz he 0316s Send read RTTY keying polarity 0 Normal 1 Reverse pg 0317 i Send read noise blanker level O min to 255 max eee 0318 Send read key type O Normal 1 Reverse 2 Bug 3 OFF 4 Mic UP DN ee 0319s Send read CW keyer dot dash ratio 28 1 1 2 8 to 45 1 1 4 5 po 0320 i Send read CW keyer repeat time 01 1 sec to 60 60 sec is 0321 Send read CW keyer transmission indication 0 Normal 1 First 3 character 2 First 3 character contact number Ss 0322 Send read contact number style O Normal 1 190 ANO 2 190 ANT 3 90 NO 4 90 NT feos a 0323 J Send read count up trigger chan nel 1 MK1 2 MK2 3 MK3 a 0324 Send read present number 1 999 pore 04 Send read DATA mode 0 OFF 1 ON 1B 00 Set read repeater tone frequency fe es or Set read TSQL tone frequency 1C 00 Set read the transceiver s condi tion 0 Rx 1 Tx mapen or Set read antenna tuner condition O OFF 1 ON 2 Start
93. amp 3 0302 f Send read band edge beep set 05 Select 10 kHz tuning step O OFF 1 ON 06 Select12 5kHztuningstep ff 0303 Send read beep output level set 07 Select 20 kHz tuning step O min to 255 max op Select 25 kHz tuning step fa 0304 Sendife ad beep limit set O OFF 09 Select 100 kHz tuning step 1 ON 11 Select read attenuator 00 0FF 8 POT 0305 f Send read CW carrier point set 20 ON 20 dB O LSB 1 USB 13 00 Announce with voice synthesizer oo Send read CW side tone level set 01 00 all data 01 frequency and O min to 255 max 02 S meter level 02 operating mode p7 0307 Send read CW side tone limit set 14 01 Level data AF level setting O max CCW to O OFF 1 ON i 255 max CW Ff 0308 J Send read 9600 bps mode set 02 Level data RF level setting 0 max CCW to O OFF 1 ON 255 11 o clock ff 0309 N Send read VOX gain set 0 min 03 Level data SQL level setting 0 11 o clock to to 255 max 255 max CW ff 0310 Send read anti VOX gain set 04 Level data IF SHIFT position setting 0 max O min to 255 max ees CCW 128 center 255 max CW fof o3it o Send read VOX delay time set 06 Level data Noise reduction level setting 0 0 sec to 20 2 0 sec te Ne ek tell O min to 255 max 0312 Send read meter selection 07 Level data Twin PBT inside setting O max O Power 1 SWR 3 ALC CCW 128 center 255 max CW fo Eo 0313 Send re
94. an be changed with the main dial MEMORY WRITE p 57 byl i Push for 1 sec to store the selected read out frequency and operating mode into the displayed memory channel MEMORY CLEAR p 58 Push for 1 sec to clear the selected read out memory channel contents BLANK appears e This switch does not function in VFO mode VFO MEMORY e Push momentarily to toggle between VFO and memory modes p 56 E5 Push for 1 sec to transfer the frequency and operating mode in the selected mem ory channel to a VFO p 58 M3 functions en CG GD GD FILTER SELECTION p 49 Push to toggle the narrow filter or wide filter push for 1 sec ON and OFF M appears when the narrow filter is ON W appears when the wide filter is ON e An optional filter installation and presetting in initial set mode p 79 is necessary to use the following CW RTTY narrow FL 52A or FL 53A SSB narrow FL 222 SSB wide FL 257 NOISE BLANKER p 48 Push momentarily to toggle the noise blanker ON and OFF NB appears when the noise blanker func tion is ON The nois blanke does not function in FM mode item p 80 in initial set mode must be set to ON for the noise blanker to work in AM mode Push for 1 sec to enter the noise blanker level set mode e The noise blanker level can be set in noise blanker level set mode p 46 1 PA
95. ange ACC gt H 13 8V Gray ACC cable EE 3 BASIC OPERATION E When first applying power CPU resetting Before first applying power make sure all connections required for your system are complete by referring to POWER Chapter 2 Then reset the transceiver using the fol 4 lowing procedure Z Resetting CLEARS all programmed contents in v Z memory channels and returns all initial set mode and 4 quick set mode contents to their default values Make sure the transceiver power is OFF While pushing A and V push POWER to turn power ON Push F 3 oe for 1 sec i appears as shown at right Then push F 3 for 1 sec to start resetting j e The internal CPU is reset e The display changes to All indication RF power Power supply voltage and Initial frequency and Mode as shown at right The transceiver s initial frequency and mode ii display selection If you can t figure out how to return to the t11 display While pushing MENU turn power ON H initial settings After resetting the transceiver set controls and switches as shown in the diagram below POWER OFF AF Max CCW P AMP ATT OFF wom 2 TE HF 50MHz TRANSCEIVER_IC 703 6 we CCW counterclockwise indicator lights out RF SQL Center
96. ansmit frequencies So the receive frequency p 80 S1 3 5 7 9 20 40 60dB Po 5 FUNCTION FOR TRANSMIT 6 Quick split function In fF when you push F 1 L for 1 sec split fre quency operation is turned ON and VFO B is auto ie matically changed according to the plus minus pre programmed shift frequency set in initial set mode or equalized when 0 kHz is programmed as the split shift frequency This shortens the time needed to start split frequency operation great for DX ing ma a FO F 1 MENU DISPLAY The quick split function is ON by default If desired it can be turned OFF in initial set mode p 79 In this case pushing F 1 2 i for 1 sec has the same ef fect as pushing F momentarily as in normal ST tow Tu Tm oe zl Awr split operation D LE WILE Ie VFOA PROGRAMMING SPLIT SHIFT FREQUENCY p 80 Push POWER to turn power OFF pi fr BH While pushing LOCK push POWER to turn ee power ON and enter initial set mode No shift frequency is programmed Select 6 i using MENU M CH or the A V keys then rotate the main dial EELEE to select the desired split offset Pat Peace R The split offset can be selected from 9 999 MHz to Gea 9 999 MHz 10 kHz is programmed as a shift VOB frequency E Meter selection The bar meter in the function display acts as an S meter for relative sig
97. ast is Pig LGR co gaij Selected MENU DISPLAY 48 5 FUNCTION FOR RECEIVE E Optional filter selection One optional filter can be installed in the IC 703 Y NOTE When selecting the narrow filter or wide fil eee G ter the graphic passband is changed see dia Narrow filters help reject interference from adjacent gram below signals and obtain good selectivity Wide filters provide improved audio for SSB operation Porn 4 ETR gt Pa when no interfering signals are present yoo oo woot JOE Consult the table below to select a filter most suitable wide is Normal narrow is for your operating needs selected operation selected Narrow filters for AM FM modes are standard FILTER PRESETTING After you install a filter see p 87 for installation you must specify the installed filter in initial set mode item see p 79 FILTER ON OFF Select H2 e Push DISPLAY once or twice to select e Push MENU one or more times to select 2 Push F 1 1 momentarily to select the narrow filter push for 1 sec to select the wide filter 0 appears when the narrow filter is selected M ap pears when the wide filter is selected e Filter variations Name Mode Bandwidth FL 53A CW RTTY 250 Hz 6 dB FL 52A CW RTTY 500 Hz 6 dB FL 222 SSB CW RTTY 1 8 kHz 6 dB FL 65 SSB CW RTTY 2 3 kHz 6 dB FL
98. c to enter the RTTY tone set mode This item selects the RTTY tone RTTY tone is se lected between 1275 1615 and 2125 Hz Pa l l The default is 2125 Hz This item adjusts the RTTY shift There are 3 selec A m table values 170 200 and 425 Hz ie The default is 170 Hz ee ar This item adjusts the RTTY keying Normal or reverse ae The default is n normal keying can be selected Pa Normal key op n mark Reverse key open space 40 41 4 RECEIVE AND TRANSMIT E Operating AM Push 4 BAND BAND to select the desired band Push MODE momentarily or push for 1 sec to se lect AM mode After FM or AM mode is selected push MODE for 1 sec to toggle between FM and AM modes Rotate AF control to set audio to a comfortable lis tening level Rotate the main dial to tune a desired signal e S meter indicates received signal strength e The default tuning step for AM mode is 1 kHz this can be changed using the tuning step program mode p 19 Push PTT microphone to transmit e The TX indicator lights red Speak into the microphone at your normal voice level Adjust MIC GAIN at this step if necessary p 26 Release PTT microphone to return to receive Convenient functions for receive AF TX indicator MODE Jos 4 e V Main T AM appears Po Preamp and attenua
99. cel the transmission Keying with the connected straight key or paddle to KEY on the rear panel is also cancels the transmis sion Under bars n nn ger set channel e The contest number counter is incremented each time the contents are sent e Push MENU to reduce the contest number count by 1 when resending contents to unanswered calls Push MODE momentarily to exit memory keyer send menu and return to normal CW mode indica tion are indicated for the count up trig MODE Tae MENU F 2 e Memory keyer send menu menu C Ft Cre Crs Sends F 1 t i H F contents e Memory keyer send menu Count up trigger indication 4 send indication send indication Counter send indication 34 35 4 RECEIVE AND TRANSMIT Editing a memory keyer The contents of the memory keyer memories can be set using the memory keyer edit menu The memory keyer can memorize and re transmit 3 CW key codes for often used CW sentences contest numbers etc Total capacity of the memory keyer is 50 characters per memory channel Programming contents Select CW mode with MODE Enter the memory keyer menu Push MODE for 1 sec to enter the memory keyer send menu Push DISPLAY momentarily to enter the memory keyer menu 3 Push F 1 f T to enter the edit men Push the a function key F 1 Fi
100. ct to ACC socket l A MOD AF SQLS HSEND 13 8 V ALC s8sv ALC GND VSEND HSEND 13 8V BAND 1 PANEL DESCRIPTION E Function display J oO Do LSB USB Cw G RTTY AM FM TSaL NARROW WIDE FILTER INDICATORS gt MM appears when selecting AM narrow or FM narrow modes When installing an optional narrow filter narrow mode can be selected in CW RTTY and SSB modes When the SSB wide filter is installed M appears during wide mode selection MODE INDICATORS Show the selected operating mode O appears when CW reverse or RTTY reverse mode is selected SPLIT INDICATOR Appears during split operation PROGRAMMABLE 1 MHz TUNING STEP INDICATORS a appears when the programmable tuning step is selected b appears when the 1 MHz quick tuning step is selected FREQUENCY READOUT Shows the operating frequency BLANK MEMORY INDICATOR Appears when the displayed memory channel is not programmed blank channel e This indicator appears both in VFO and memory modes VFO MEMORY INDICATORS VFO Aor B appears when VFO mode is selected MEMO appears when memory mode is selected SELECT MEMORY CHANNEL INDICATOR Appears when the selected memory channel is set as a select memory channel MEMORY CHANNEL READOUT Shows the selected memory channel DOT MATRIX INDICATORS These alphanumeric readouts show
101. cted codes for memory keyer con tents as above and follows are additionally used e Character s code Alphabetical characters Character ASCII code Character ASCII code a z 61 7A e Character s code Symbols Character ASCII code Character ASCII code 21 23 24 25 amp 26 5C 3F 22 gt 27 X 60 2B 2D 3A 3B 3D lt 3C gt 3E 28 29 5B 5D 7B 7D 7C _ 5F a 7E E General Set mode is used for programming infrequently changed values or conditions of functions The IC 703 has 2 separate set modes quick set mode and initial set mode Quick set mode operation SET MODE 1 2 While power is ON push DISPLAY for 1 sec Quick set mode is selected and one of its items ap pears Quick set mode items vary depending on the selected operating mode SSB FM etc Push MENU one or more times to select the de sired item e M CH or A V can also be used Rotate the main dial to set the values or conditions for the selected item Repeat steps and to set other items To exit quick set mode push DISPLAY momen tarily ele fe E To Pom C eo Main dial or M ak vhs DISPLAY EXAMPLE QUICK SET MODE uf r4 Value or condition S1 3 57 9 20 40 60dB Po 5 10 e M CH or 4 W can also be used
102. e aer ee eo cas ese eersce eects 1 3 5 d MM plug ete teeeerenneaee tree tate tae Nenana steiner 1 6 5 d mm Electronic keyer plug 00 ce 1 Microphone hangel ecccccceececesseeeeeseteteeeeeeees 1 A Icom Icom Inc and the fcom logo are registered trademarks of Icom Incorporated Japan in the United States the United King dom Germany France Spain Russia and or other countries ick Reference H i N BEEREREREERRRReeeeE TABLE OF CONTENTS 3 BASIC OPERATION 2 0seeeeeeeeee 17 26 E When first applying power CPU resetting 17 OF display selection 17 Mi Initial settings eee 17 E VFO description eere 18 The differences between VFO and memory MOE eee eee e eee etre ee eee ee nets 18 MFrequency setting o e 19 E Operating mode selection 000 23 M Volume Setting cece eee eee eee eee eee eee 23 E Squelch and receive RF sensitivity 24 Mi Dial lock function ccceeeeeeeeee eee ee ees 25 E Basic transmit operation aeee 25 O Transmitting esrsisceier isnin 25 Q Maximum output Power sssececeereeereee 25 Setting output power s sssesesesesserereereee 26 Setting microphone gain 26 4 RECEIVE AND TRANSMIT 27 45 M Operating SSB cee eeen 27 Convenient functions for receive 27 Convenient functions for transmit 27
103. e fol lowing positions AF Commonly referred to as the vol ume fully counter clockwise RF SQL The control for the RF Gain and Squelch circuits 12 o clock e SHIFT Shifts the IF center frequency 12 o clock 2 Resetting the CPU Although you have purchased a brand new radio some settings may be changed from the factory defaults during the QC process So your radio can start from Factory Defaults resetting the CPU is necessary Refer to p 17 Oo o o O een OO COD Cy Cy a 4 7 V O c D b t xX x 2 5 O QUICK REFERENCE GUIDE Just listening 1 Select the desired band On your IC 703 an easy way of changing bands is by using the 4 BAND or BAND located just right corner on the front panel al _ EC oO 9G CD e Push amp band Pushing 4 BAND or BAND continuously scrolls through the available bands BAND or BAND to select the desired Say you want to go to 20 meters or 14 MHz you would push 4 BAND or BAND several times to select it This will change the displayed operating frequency to the 20 meter band gy NOTE The band stacking register can also be used to select bands Refer to p 22 2 Tune to the desired frequency Directly left of the 4 BAND BAND is the main dial This will allow you to dial in the frequency you
104. e p 92 ANF Automatic Notch Filter function This function automatically attenuates beat tones tuning signals etc even if they are moving The au tomatic notch filter functions in SSB FM and AM modes Select 4 DSP menu e Push DISPLAY once or twice to select e Push MENU one or more times to select Push F 1 F to toggle the automatic notch fil ter ON and OFF DSP and ANF appear when the function is ON NR Noise Reduction function This function reduces noise components and picks out desired signals which are buried in noise The re ceived AF signals are converted to digital signals and then the desired signals are separated from the noise The noise reduction function is available for all oper ating modes Select 4 DSP menu e Push DISPLAY once or twice to select e Push MENU one or more times to select Push F 2 M to toggle the noise reduction func tion ON and OFF DSP and NR appear when the function is ON Push F 3 F 1 to toggle the noise reduction level indication ON and OFF Rotate the M CH control to set the noise reduc tion level e Set the control for maximum readability Deep rotation results in audio signal masking or distortion MENU F 3 M CH F 2 DISPLAY 50 51 6 FUNCTION FOR TRANSM
105. e reduction ON and OFF e Push DISPLAY once or twice to select Push MENU one or more times to select e Push F then rotate M CH to adjust the noise reduction level NR appears when the noise reduction is set to ON to turn the e Auto notch filter p 50 While is selected push F 1 HiH auto notch filter function ON and OFF ANF appears when the noise reduction is set to ON to turn the Convenient functions for transmit e Speech compressor p 54 the speech compressor ON and OFF e Push DISPLAY once or twice to select Push MENU one or more times to sele COM appears when the speech compressor is set to ON e Push F 2 i level set mode for 1 sec to enter the compression e Carrier frequency control p 75 While i is selected rotate main dial to adjust the audio tone Push DISPLAY for 1 sec to enter the quick set mode Push MENU one or more times to select i7 e VOX voice operated transmit p 53 While i is selected push F 1 the VOX function ON and OFF e Push DISPLAY once or twice to select Push MENU one or more times to select f VOX appears when the VOX function is set to ON e Push F 1 0 4 for 1 sec to enter the VOX set mode RECEIVE AND TRANSMIT 4 E Operating CW Connections for CW Rear panel Keyer set mode setting
106. eived every 60 sec are past 1 1 4 8 16 The power save function activates selected ratio OFF The power save function does not activate The default is OFF Simple mode setting This item select the simple mode and normal mode on Simple mode is selected marked items in initial set mode are hidden and push DISPLAY to se lect Main menu or Sub menu only Graphic menu also hidden oFF Normal mode is selected re Simple mode ON Simple mode OFF default i Mode Availavility This item is available in all modes and allows you to a simplify operation by inhibiting the selection of un needed operating modes during normal operation For example if you are operating mobile an ly on using FM and AM modes use i i to inhibit access to all other mantles SSB CW RTTY thereby making selection of AM or FM quick and easy The default is on for all operating modes To toggle an operating mode on or off push or push and hold MODE one or more times until the desired mode is displayed then rotate the main dial to set on or off Output power setting for modes This item allows you to set the output power for each operating mode on Output power can be set for each mode groups oFF Same output power for every mode The mode groups are separated SSB D USB LSB CW and RTTY AM FM The default is OFF When
107. election The following modes are available in the IC 703 SSB LSB USB CW CW G CW reverse RTTY and WRTTY RTTY reverse FM AM SSB LSB USB CW RTTY SSB D FM and AM modes selection To select the desired mode of operation push MODE one or more times then push MODE for 1 sec if necessary See the diagram at right for the order of selection e The selected mode is indicated in the function display CW J CW reverse mode selection When selecting CW mode push DISPLAY for 1 sec to enter quick set mode Push MENU one or more times to select item a during CW mode iY or M CH can also be used 3 Rotate the main dial to select CW reverse Push DISPLAY to exit quick set mode CW Q appears eGRTTY RTTY reverse mode selection When selecting RTTY mode push DISPLAY for 1 sec to enter quick set mode Push MENU one or more times to select item 2 during RTTY mode AJ or M CH can also be used Rotate the main dial to select RTTY reverse Push DISPLAY to exit quick set mode GAIRTTY appears Note If a desired mode cannot be selected it may be hidden using initial set mode p 76 MODE TS O GC a OO OPERATING MODE SELECTION Y USB gt LSB Y ______ Memory keyer wa set mode y RTTY lt gt SSB D sli ie y FM lt gt AM ae
108. est number set mode This menu is used to set the contest serial number and count up trigger etc e Setting contents Select CW mode with MODE Enter the memory keyer menu Push MODE for 1 sec to enter the memory keyer send menu Push DISPLAY momentarily to enter the memory keyer menu Push F 2 amp 1 to enter the contest number set mode Push MENU once or twice to select the desired set item M CH or A V can also be used Set the desired condition using the main dial Push DISPLAY twice to return to the memory keyer send menu RECEIVE AND TRANSMIT 4 MODE Main dial Number style This item sets the numbering system used for contest serial numbers normal or morse cut numbers n Does not use morse cut number default 190 Ano Sets 1 as A 9 as N and 0 as O 190 Ant Sets 1 as A 9 as N and 0 as T 90 no Sets 9 as N and 0 as O 90 nt Sets 9 as N and 0 as T i i Count up trigger This selects hich of the three memory slots will have the contest serial number exchange The count up trigger allows the serial number automatically incre mented after each complete serial number exchange is sent 1 MK1 2 MK2 and 3 MK3 can be set default 2 a Present number This item shows the current number for the count up trigger channel set above e Rotate the tuning dial to change the number 3
109. for each IC 703 in the range 01H to 7FH CI V address setting i ital LILO Address set to 68H default m Lari Address set to 7FH tit ot n This item sets the data transfer rate When Auto is selected the baud rate is automatically set according i CI V data transffer rate DI Pa R Ena a nected to other Icom HF transceivers or receivers When on is selected changing the frequency oper ating mode etc on the IC 703 automatically changes those of connected transceivers or receivers and vice versa Transceive ON default to the connected controller or remote controller Auto baud rate d fault 19200 bps saa CI V transceive Transceiver operation is possible with the IC 703 con TONO L ra aes Transceive OFF When connecting the IC 703 to the IC 735 for trans ceiver operation you must change the operating fre quency data length to 4 bytes This item must be set to on only when operating trans ceiver with the IC 735 CI V operating frequency data length D mt re Frequency data set to 5 bytes default mere Frequency data set to 4 bytes When is set to ON marked items are undisplayed 82 Mm 13 MAINTENANCE E Fuse replacement DC POWER CABLE FUSE REPLACEMENT If a fuse blows or the transceiver stops functioning try to find the source of the problem and re
110. freq Presetting for RTTY RECEIVE AND TRANSMIT 4 Tone frequency Push MODE momentarily to select RTTY mode After RTTY mode is selected push MODE for 1 sec to toggle between RTTY and SSB D modes Enter the RTTY tone set mode e Push DISPLAY once or twice to select e Push Pease one or more times to selec pje e Push F 2 for 1 sec to enter the RTTY tone set mode below Push MENU one or more times to select Fi then rotate the main dial to saladi the desired frequency Shift frequency eEnter the RTTY tone set mode as same as ABO Push MENU one or more times to select R m7 then rotate the main dial to elect the desired shift frequency RTTY keying Enter the RTTY tone set mode as same as abo Push MENU one or more times to select His then rotate the main dial to se lect the desired keying polarity After presetting is finished push DISPLAY momen tarily to return the normal operating mode MODE Main dial 0 pezak MENU F 2 DISPLAY RTTY mark frequency is set to 2125 Hz 2125 1615 and 1275 Hz are available RTTY shift frequency is set to 170 Hz 170 200 425 Hz are available RTTY keying is set to normal normal key open mark key close space reverse key open space key close mark RTTY tone set mode While f is selected in RTTY mode push F 2 for 1 se
111. frequency When using a repeater the transmit frequency is shifted from the receive fre quency by an offset frequency A repeater can be ac cessed using split frequency operation with the shift frequency set to the repeater s offset frequency Set the offset frequency and turn ON the quick split function in initial set mode in advance pgs 79 80 elf the quick split function is turned OFF both transmit and receive must be set separately 2 Push MODE one or more times to select FM mode then set the receive frequency 3 Select fii Push DISPLAY once or twice to select fi Push MENU one or more times to selec s Push F 1 FL for 1 sec to activate the split fre quency function with the pre selected offset Select His e Push MENU one or more times to select tis for 1 sec to enter the FM tone set mode elf FM mode has not been selected this item does not appear e Push MENU one or more times to select f e Rotate the main dial to set a subaudible tone frequency Push DISPLAY to exit the FM tone set mode Push F 2 THH to turn the tone encoder T appears 8 To check the repeater input frequency direct sig nal from the other station push and hold F 3 F in the 4 display To return to simplex operation push F 1 the 1 display NOTE The split function may not be turned off when you change the operating band push
112. h P AMP ATT momentarily to turn the preamp ON and OFF push for 1 sec to turn the attenuator ON Lights green when the preamp is ON lights red when the 20 dB attenuator is ON e Only one of these functions can be activated at a time P AMP ATT Cs Lights green while the preamp is activated lights red while the attenuator is activated P AMP ATT u gt v momentarily P AMP ATT jy ATT ON OFF v gt 3 gt J 46 47 5 FUNCTION FOR RECEIVE BRIT function The RIT Receive Incremental Tuning function com pensates for off frequencies of communicating sta tions The function shifts the receive frequency up to 9 99 kHz in 10 Hz steps without moving the transmit frequency aii thii LHL item in initial set mode must be set to RIT mode in advance p 79 Push RIT e The RIT indicator lights red Rotate the M CH control to cancel the off fre quencies e The transmit frequency is not shifted To cancel the RIT function push RIT again e The RIT switch indicator goes out Calculate function The shift frequency of the RIT function can be added subtracted to the displayed frequency While the RIT indicator is lit push and hold RIT for 1 sec Y NOTE The RIT function is not available in FM or AM modes regardless of the Initial Set mode set Z ting p 79 M CH R
113. he Federal Communications Commission Office of Engineering and Technology s report on Evalu ating Compliance with FCC Guidelines for Human Radio Frequency Electromagnetic Fields OET Bulletin 65 A WARNING HIGH VOLTAGE NEVER attach an antenna or internal antenna connector during transmis sion This may result in an electrical shock or burn A NEVER apply AC to the DC13 8V receptacle on the transceiver rear panel This could cause a fire or damage the transceiver A NEVER apply more than 16 V DC such as a 24 V battery to the DC13 8V receptacle on the transceiver rear panel This could cause a fire or damage the trans ceiver A NEVER let metal wire or other objects touch any in ternal part or connectors on the rear panel of the trans ceiver This may result in an electric shock NEVER expose the transceiver to rain snow or any liquids AVOID using or placing the transceiver in areas with tem peratures below 10 C 14 F or above 60 C 140 F Be aware that temperatures on a vehicle s dashboard can exceed 80 C 176 F resulting in permanent damage to the transceiver if left there for extended periods AVOID placing the transceiver in excessively dusty envi ronments or in direct sunlight AVOID placing the transceiver against walls or putting anything on top of the transceiver This will obstruct heat dissipation Place unit in a secure place to avoid inadvertent use by children During mobile ope
114. he default is OFF in operation is selectable from off on and FULL E n This item adjusts break in delay time for CW semi k ar break in operation The delay time is selectable from d 74 The default is 7 5 dots 2 0 to 13 0 dots This item sets the CW pitch CW pitch is adjustable a ee The default is 600 Hz from 300 to 900 Hz in 10 Hz steps Bi l This item adjusts the CW paddle type Four selec tions are available n normal for electronic keyer use ve er reverse for electronic keyer use The default is n normal buG When using the electronic keyer key down produces a dash releasing the key automat ically produces a dot s oFF Turns OFF the electronic keyer for straight key use eud For using the microphone s UP DN keys in stead of the CW paddle This item adjusts the CW key ratio or weight The The default is 3 0 ratio can be selected from 2 8 to 4 5 sae 32 33 4 RECEIVE AND TRANSMIT E Memory keyer functions The transceiver has a number of convenient functions for the electronic keyer that can be accessed from the memory keyer menu Select CW mode with MODE MODE Push MODE for 1 sec to select the memory keyer send menu e Push MODE momentarily to return to normal CW op erating mode 3 Push DISPLAY to enter the memory keyer menu See the diagram below e Push DISPLAY momentarily to return to the
115. his case an antenna tuner is useful to match the transceiver and antenna Low SWR al lows full power for transmitting even when using the antenna tuner The IC 703 has an SWR meter to monitor the antenna SWR continuously PL 259 CONNECTOR INSTALLATION EXAMPLE 30 mm am hea 10 mm soft solder Slide the coupling ring down Strip the cable jacket and soft solder Coupling ring 10MM soft Strip the cable as Il solder shown at left Soft m solder the center con 1 2 mm ductor solder pi Slide the connector m Cl body on and solder it Screw the coupling ring onto the connector body n 30mm in 10mm in 1 2 mm ein Y A WARNING Although a mag mount antenna Y works great on a vehicle DO NOT use the IC 703 f with this type of antenna Z CAUTION Although your IC 703 has protection to f drop down power with a high SWR this does not Z completely protect the transceiver from transmis g sion without an antenna Make sure you have an antenna connected whenever you transmit with ZG your radio gy NOTE There are many publications covering Y proper antennas and their installation check with Y your local dealer for more information and recom Z mendations S c eb b eb t am x 2 O QUICK REFERENCE GUIDE 5 Connect other peripheral equipment Everyone has his or her favorite ad on gear now is the time to connect this gear We will cover the bas
116. his item sets the CW side tone level limit When the AF control is rotated above a specified level the CW side tone does not increase on CW side tone level is limited default oFF CW side tone level is not limited CW side tone level limit rr CW side tone limit ON default hlo pra CW side tone limit OFF 77 When is set to ON marked items are undisplayed SETMODE 12 This item selects the displayed frequency shift func tion from ON and OFF When this function is activated the receiving signal can be kept in receive even when the operating mode is changed between SSB and CW ON The displayed frequency shifts when the oper ating mode is changed between SSB and CW oFF The displayed frequency does not shift default 5 SSB CW frequency shift setting re Synchronous tuning ON Synchronous tuning OFF default Y The frequency shifting value may differ according ZG to the CW pitch setting i Display backlighting The function display backlighting can be set to high low or OFF to suit ambient lighting l qi Display backlighting set to high default w a oor Display backlighting set to low The key switch backlighting can be set to high low or OFF to suit ambient lighting Key switch backlighting ls ra Key switch backlighting set to high default LALI Key switch backlighting set to low
117. hone at your normal voice level Adjust MIC GAIN at this step if necessary p 26 Release PTT microphone to return to receive Convenient functions for receive RECEIVE AND TRANSMIT 4 AF TX indicator MODE Main dial FM appears Preamp and attenuator p 46 Push P AMP ATT momentarily to set the preamp ON or OFF Lights green when the preamp is set to ON Push P AMP ATT for 1 sec to set the attenuator ON Push P AMP ATT momentarily to turn the attenua tor OFF e Lights red when the attenuator is set to ON eIF shift p 47 Rotate SHIFT control e Noise reduction p 50 While 1 is selected push F 2 noise reduction ON and OFF e Push DISPLAY once or twice to select e Push MENU one or more times to select 2 e Push F 3 i then rotate M CH to adjust the noise reduction level NR appears when the noise reduction is set to ON to turn the e Auto notch filter p 50 While is selected push F 1 auto notch filter function ON and OFF ANF appears when the noise reduction is set to ON to turn the Convenient functions for transmit e VOX voice operated transmit p 53 While ii is selected push F 1 the VOX function ON and OFF Push DISPLAY once or twice to select i Push MENU one or more times to select t1 VOX appears when the VOX funct
118. ic devices that can be connected to your IC 703 If you do not see the particular item you are wanting to connect refer to the Advance Connections section starting on page 14 E Operation 1 Voice Microphones Connect the microphone to the modu lar type connector bottom of the front panel or back of the radio Rear panel T ae dl CF 5 00 Sees 2 CW CW Key There are several types of keys or keyers that can be used with your IC 703 a lambic Key paddle Use a 6 35 d mm 1 4 stereo plug and connect to the KEY jack located on the rear of the radio Rear panel Omme AEN O NI 0000 CW KEY When connecting a paddle b Straight Key Use a 6 35 d mm 1 4 mono plug and connect key to the back of the radio c External Keyer Use a 6 35 d mm 4 mono plug and connect to the back of the radio d Computer Keying Use a 6 35 d mm 1 4 mono plug and connect to the back of the radio Rear panel OpaHe a QO IONI 0000 CW KEY A straight key can be used when the internal electronic keyer is turned OFF in keyer set mode p 32 When connecting a straight key or else
119. ightning or static discharges Proper lightning protection not only offers protection to the ham gear but the shack and most importantly the op erator X NOTE There are many publications covering Y proper lightning protection check with your local dealer for more information and recommendations ISM 4 Installing your antenna system Whether your IC 703 is your first radio or one of many one of your key elements in a great shack is the antenna system There is a connection on the back of your IC 703 for HF and 6 m If you are using one antenna for HF and 6 m for simplicity connect the antenna coax to ANT ANTENNA Connect a HF 50MHz antenna Impedance 50Q Your IC 703 is equipped with an internal antenna tuner ATU for operation on 160 6 m This ATU is de signed to work with an unbalanced 50 Q feedline The purpose of the internal antenna tuner is to match the impedance of your antenna system to as close to a 50 Q load as possible This ATU will not operate with a long wire or ladder line 450 or other balanced feedlines An external ATU such as the AH 4 would be necessary for this kind of operation Antenna SWR Each antenna is tuned for a specified frequency range and SWR may be increased out of range When the SWR is higher than approx 2 0 1 the transceiver s power drops to protect the final tran sistors In t
120. in circuit for measuring an tenna SWR no external equipment or special ad justments are necessary The IC 703 can measure SWR in 2 ways A Spot measurement or B Plot measurement A Spot measurement Confirm that the output power is over 5 W Push MENU one or more times to select 3 Push F 3 f T to select the SWR meter Push MODE one or more times to select CW or RTTY operation Key down or push PTT to transmit then read the ac tual SWR from the meter w lt 1 5 well matched antenna gt 1 5 check antenna or cable connection etc B Plot measurement Plot measurement allows you to measure the SWR over an entire band Confirm that the output power is over 5 W Push DISPLAY once or twice to select 3 Push MENU one or more times to select Set the center frequency for the SWR to be n mea sured Push and hold F 1 1 one or more times to se lect the desired frequency pitch Push and hold F 2 one or more times to select the desired step After s ecting the desired pitch and step push F 3 TF to measure the SWR RTTY mode is selected automatically 8 Push and hold PTT to display the SWR in a bar graph readout Q When PTT is released the frequency marker and frequency indication move to the next frequency to be measured 10 The antenna is well matched in this range i M Repeat steps 8 and to measure SWR over
121. ion is set to ON Push F 1 i 4 for 1 sec to enter the VOX set mode 4 to turn 42 43 4 RECEIVE AND TRANSMIT Tone squelch operation Tone squelch operation is a method of communica tions using selective calling Only received signals having a matching tone will open the squelch Before communicating using tone squelch all members of your party must agree on the tone squelch frequency to use Push MODE one or more times to select FM mode 2 Select tis e Push DISPLAY once or twice to select t e Push MENU one or more times to select t1 Q Push F 2 4 for 1 sec to enter the FM tone set mode Push MENU one or more times to select Rotate the main dial to set the desired subaudible tone frequency e See left table for available tone frequencies e Push DISPLAY to exit the FM tone set mode Push F 2 once or twice to turn the tone squelch fhe TSQL appears Communicate in the usual manner e Push PTT to transmit release to receive MODE Main dial oO Je F 2 DISPLAY P MENU FM TSQL e Available tone squelch frequencies Unit Hz 67 0 85 4 107 2 136 5 165 5 186 2 210 7 254 1 69 3 88 5 110 9 141 3 167 9 189 9 218 1 71 9 91 5 114 8 146 2 171 3 192 8 225 7 74 4 94 8 118 8 151 4 173 8 196 6 229 1 77 0 97 4 123 0 156
122. is BAND Packet data speed This item is used to change the communications speed for packet operation The data socket speed can be set to 1200 or 9600 baud is set to ON marked items are undisplayed SET MODE 12 When the optional UT 102 VOICE SYNTHESIZER UNIT S installed you can select between English and Japan ese as the language E Voice synthesizer language D P LOLI Voice synthesizer functions in English default Tm LoT Voice synthesizer functions in Japanese Voice synthesizer speed When an optional UT 102 SPEECH SYNTHESIZER UNIT is installed the synthesizer can be set to read out the frequency mode only or both the frequency mode and S meter level Voice synthesizer reads out both the frequency mode and S meter level default When the optional UT 102 VOICE SYNTHESIZER UNIT S il T S installed you can select the speech speed of synthe as oe sizer output between faster or slower Speech speed Speech speed is faster default is slower ce eto S meter level speech m1 er Voice synthesizer reads out the frequency mode only To distinguish equipment each CI V transceiver has its own Icom standard address in hexadecimal code The IC 703 s address is 68H When 2 or more IC 703 s are connected to an op tional CT 17 ci v LEVEL CONVERTER rotate the main dial to select a different address
123. ith or without the front panel inside a vehicle MB 63 MOUNTING BRACKET IP Metal plate for attaching the front panel to a wall or other such flat surface OPTIONS 17 MB 65 MOUNTING BASE Allows you to conveniently vehicle mount the front panel of the IC 703 An MB 63 must be used in combination with the MB 65 MB 72 CARRYING HANDLE Convenient when carrying the transceiver OPC 581 587 SEPARATION CABLE Provide front panel detached operation for mobile installations or compact transceiver operation OPC 581 3 5 m 11 5 ft OPC 587 5 m 16 4 ft OPC 589 MICROPHONE ADAPTOR CABLE nS a Conversion between 8 pin modular and 8 pin metal connector for using a desktop mi crophone with the IC 703 OPC 598 ACC 13 PIN CABLE Required when using the AT 180 OPC 599 ADAPTOR CABLE 70 13 pin ACC connector to 7 pin 8 pin ACC connector UT 106 DSP RECEIVER Provides AF DSP functions such as noise reduction and auto notch Built in to some versions PS 125 DC POWER SUPPLY Light weight switching regulator power sup ply The OPC 1248 is necessary to use this power supply e Output voltage 13 8 V e Max current drain 25 A LC 156 MULTI BAG with controller case P BP 228 Ni Cd BATTERY PACK 9 6 V 2800 mAh Provides outdoor operation max output power 5 W OPC 1248 DC POWER ADAPTOR CABLE Provides to connect PS 12
124. l Directive 1999 5 EC This warning symbol indicates that this equipment operates in non harmonised fre quency bands and or may be subject to li censing conditions in the country of use Be sure to check that you have the correct ver sion of this radio or the correct programming of this radio to comply with national licens ing requirement ABOUTCE 19 O ICOM We Icom Inc Japan 1 1 32 Kamiminami Hirano ku Osaka 547 0003 Japan DECLARATION OF CONFORMITY Declare on our sole responsibility that this equipment complies with the essential requirements of the Radio and Telecommunications Terminal Equipment Directive 1999 5 EC and that any applicable Essential Test Suite measurements have been performed Kind of equipment HF 50 MHz ALL MODE TRANSCEIVER Type designation IC 703 CEO Diisseldorf 14th Mar 2003 Place and date of issue Icom Europe GmbH Himmelgeister stra e 100 D 40225 D sseldorf Version where applicable This compliance is based on conformity according to Annex III of the directive 1999 5 EC using the following harmonised standards i Article 3 1a EN 60950 A11 ii Article 3 1b EN 301489 1 and EN 301489 15 or ETS 300 684 iii Article 3 2 EN 301 783 2 iv Authorized representative name T Maebayashi General Manager ach v Signature Version and frequency coverage Europe 02 12 Receive 0 500 29 999 MHz 50 000 5
125. lts connect a heavy gauge wire or strap to a long earth sunk copper rod Make the distance be tween the GND terminal and ground as short as pos sible g A WARNING NEVER connect the GND ter minal to a gas or electric pipe since the connection Z could cause an explosion or electric shock NANNY COo Ol INSTALLATION AND CONNECTIONS E Antenna connection For radio communications the antenna is of critical im portance along with output power and sensitivity Se lect antenna s such as a well matched 50 antenna and feedline 1 5 1 or better of Voltage Standing Wave Ratio VSWR is recommended for your desired band Of course the transmission line should be a coaxial cable G CAUTION Protect your transceiver from lightning g by using a lightning arrestor PL 259 CONNECTOR INSTALLATION EXAMPLE 50mm Slide the coupling ring a e down Strip the cable jacket and soft solder Coupling ring 10 mm soft solder 10MM soft Strip the cable as k solder shown at left Soft i solder the center con 1 2 mm ductor solder solder Slide the connector body on and solder it Screw the coupling E ring onto the connector body ANTENNA SWR Each antenna is tuned for a specified frequency range and SWR may be increased out of range When the SWR is higher than approx 2 0 1 the transceiver s power drops to
126. m 34 p 81 66 67 Mmm 10 DATA COMMUNICATION E Connections for packet When connecting to DATA socket a RX AUDI ATN OAF OUT upio DATA OUT fi a PTIP 2 SQL TNC SIDE 3 BOPT TX AUDIO GND 5 GND DATA Rear panel DO 0000 NI TU or TNC Personal computer When connecting to ACC socket Rear panel p0 0000 ACC Se be a PSsogjeooos Af oF view W E7 M GND red 4 000 SQL light green Connect SQL line when required eee re 00O AF in pink AF out light blue L m l F refer to connection to the supplied ACC cable When connecting to MIC connector Rear panel MIC Oge Psoojooocoo Rear panel view TU or TNC Personal computer Sa GND MIC SQL E Packet AFSK operation
127. more times to select i i then rotate the main dial to set the de sired pitch 3 Push DISPLAY to exit the keyer set mode imo MENU F 2 DISPLAY Main dial This shows the default setting for the CW pitch control 600 Hz Electronic CW keyer The IC 703 has an electronic keyer Both keying speed and weight the ratio of dot space dash can be set e Setting the electronic keyer Enter the keyer set mode e Push DISPLAY once or twice to select Push MENU one or more times to ae ie Push F 2 for 1 sec to enter the keyer set mode GE h MENU one or more times to select i d i then rotate the main dial to slack the paddle type When ud is selected the up down switches on the mi crophone can be used as a paddle Push MENU one more time to select item H L then rotate the main dial to select the de sired weight Key weight can be selected from 2 8 to 4 5 eCheck the selected ratio with the side tone function in CW mode Push DISPLAY momentarily to return to tis Push DISPLAY for 1 sec to enter quick set mod Push MENU once or twice to select i A then rotate the main dial to select the de sired keying speed M CH or A V can also be used to select Keying speed can be selected from 6 to 60 wpm Push DISPLAY momentarily to return to Paddle o
128. n the IC 703 Push 4 BAND BAND to select the desired band ePushing 4 BAND BAND continuously scrolls through the available bands The band stacking register can also be used to se 7 ect bands Refer to p 22 W Qe al of o 22 IY FM ZL Irinrnr f hL Lee USB pa ee oe oe La RF USB USB TI I Zarr hA LAr L LE LIL ies D ema aR TB BF eProgrammable tuning steps Programmable tuning steps are available to suit your operating requirements These tuning steps are e Independently selectable for each mode e Selectable from 0 01 FM AM only 0 1 1 5 9 10 12 5 20 25 and 100 kHz Push TS one or more times until the programma ble tuning step indicator W appears above the 1 kHz digit e Rotating the main dial changes the frequency according to the set tuning step Push TS for 1 sec while the programmable tuning step indicator appears to enter the tuning step se lection mode af Pag i TPL appears Rotate the main dial to set the desired tuning step Change the mode and select tuning steps for other modes if desired Push TS to exit the tuning step selection mode Rotate the main dial to change the frequency ac cording to the set tuning step TS Main dial Programmable tuning step indicator 10 10 kHz tuning step is selected for USB operation
129. nal strength during receiving and can be selected for one of three types during transmitting Select H e Push DISPLAY once or twice to select e Push MENU one or more times to select Push F 3 F one or more times to select the desired meter function e The display indication changes as in the table at right DISPLAY INDICATION MEASUREMENT Po Indicates the relative RF output power Indicates the ALC level When the meter movement shows the input signal level exceeds the allowable level the ALC ALC limits the RF power In such cases reduce the microphone gain see above SWR Indicates the SWR over the transmis sion line 52 53 6 FUNCTION FOR TRANSMIT E VOX operation The VOX Voice operated Transmission function tog gles between transmit and receive with your voice This function provides an opportunity to input log en tries into your computer etc while operating Select e Push DISPLAY once or twice to select e Push MENU one or more times to select 4 Push F 1 L it to toggle the VOX function ON and OFF VOX appears when the function is ON 3 Push F 1 C8 for 1 sec to enter the VOX set mode below then set the VOX delay VOX gain and ANTI VOX if desired Select in VOX set mode Push MENU one or more times to select ii While speaking into the microphone adjust VOX DELAY
130. nna feed line is cut or shorted eCheck the feed line and correct any 5 improper conditions W e The antenna is not properly tuned e Push TUNE to manually tune the pgs antenna 64 66 e The attenuator function is activated e Push ATT to turn the function OFF p 46 Receive audio is distor e The operating mode is not selected e Select a suitable operating mode p 23 ted correctly e The SHIFT control is set off center Set SHIFT to the center position p 47 Receive signal is distor e Noise blanker function is activated e Push F 2 i p 48 ted with strong signals turn the function OFF e Preamp is activated ePush P AMP to turn the function p 46 84 85 14 TROUBLESHOOTING does not start been designated as select channels nels as select channels for the scan PROBLEM POSSIBLE CAUSE SOLUTION REF Transmitting is impossi e The operating frequency is not set to e Set the frequency to a ham band p 19 ble a ham band Output power is too low e Power is set to a lower power than Set the output power in quick set pgs 25 maximum mode initial set mode 26 e Microphone gain is set too low Set microphone gain to a suitable p 26 position using quick set mode e The antenna is not connected properly e Reconnect the antenna connector e The antenna feed line is cut or shorted eCheck the feed line and co
131. o select f Rotate the main dial to select the break in OFF semi break in or full break in BK or F BK appears when the semi break in or full break in is set to ON respectively CW reverse mode QUICK SET MODE The CWE CW Reverse mode receives CW signals with a reverse side CW carrier point like that of LSB and USB modes Use this mode when interference signals are near the desired signal and you want to change the interference tone Select CW mode with MODE Push DISPLAY for 1 sec to enter quick set mode Push MENU one or more times to select a then rotate the main dial to select CW and CWE modes e Check the interference tone Push DISPLAY momentarily to exit quick set mode MENU DISPLAY MODE Main dial e Receive audio tone response Normal CW Reverse eva 600 Hz 600 Hz lt gt l n i i I I i i k A inteference BFO inteference signal signal BFO 30 31 4 RECEIVE AND TRANSMIT CW pitch control The received CW audio pitch and monitored CW audio pitch can be adjusted to suit your preferences 300 to 900 Hz without changing the operating fre quency Enter the keyer set mode Push DISPLAY once or twice to select e Push MENU one or more times to select f e Push F 2 i amp for 1 sec to enter the keyer set mode Push MENU one or
132. om distorting when very strong signals are near the desired frequency or when very strong electric fields such as from a broadcast ing station are near your location E Multi function switches M1 functions PANEL DESCRIPTION 1 M2 functions w cs SPLIT OPERATION p 30 pme Push momentarily to toggle the split func tion ON and OFF p 51 GM appears when the split function is ON Push for 1 sec to turn the quick split func tion ON p 52 e The offset frequency must be programmed in advance using initial set mode p 80 e The offset frequency is shifted from the dis played frequency The quick split function can be turned OFF using initial set mode p 79 VFO A B SELECTION pu Push momentarily to toggle VFO A and 3 VFO B in VFO mode p 18 Push momentarily to toggle the transmis sion VFO and reception VFO during split operation p 51 Push momentarily to toggle the transmit and receive frequencies and modes of memory channels when the split function is turned ON Push for 1 sec to equalize the frequency and operating mode of the two VFO s eThe rear undisplayed frequency and oper ating mode are equalized to the front dis played VFO frequency and operating mode TRANSMIT FREQUENCY CHECK p 51 Monitors the transmit frequency when pushed and held While pushing this switch the transmit fre quency c
133. omona Ol ACC KEY aa roe __ Paddle Reverse o S For no break in operation Connect an external switch such as a foot switch or use the RTTY SEND terminal for all bands See p 38 Straight key OGOOGO VOG A PC MICROPHONE See p 31 for connection details Paddle operation from front panel MIC connector 28 29 4 RECEIVE AND TRANSMIT CW operation Connect a paddle or straight key as at previous page Push 4 BAND BAND to select the desired band 3 Push MODE momentarily to select CW mode After CW mode is selected push MODE for 1 sec to toggle between CW and Memory k ke a modes While the quick set mode item 4 is selected in CW mode rotate main dial to select CW or CWH mode Push DISPLAY for 1 sec to enter the quick set mode Push MENU one or more times to select i4 e Push DISPLAY momentarily to return to normal oper ating mode Rotate AF control to set audio to a comfortable listening level Rotate the main dial to simultaneously tune a de sired signal and its side tone T Set CW setting in the keyer set mode Push DISPLAY once or twice to select e Push MENU one or more times to select f Push F 2 for 1 sec to enter the keyer set mode p 32 Set CW break in
134. operation as semi break in full break in or OFF Push MENU one or more times to select e Rotate the main dial to select CW break in operation FULL full break in bon semi break in OFF no break in ACC socket connection is neces sary as at previous page Set the CW delay time when semi break in opera tion is selected Push MENU one or more times to select H Rotate the main dial to set the desired delay time see p 32 for details Keying to transmit use the electric keyer or pad dle to key your CW signals e The TX indicator lights red The Po meter indicates transmitted CW signal strength Release keying to return to receive TX indicator ani Main dial 4 oe 9 AA vc cj 2 ames CW or CWI appears Semi break in operation is selected Appears Delay time of 6 0 dots is selected for semi break in operation Convenient functions for receive RECEIVE AND TRANSMIT 4 Preamp and attenuator p 46 Push P AMP ATT momentarily to set the preamp ON or OFF Lights green when the preamp is set to ON Push P AMP ATT for 1 sec to set the attenuator ON Push P AMP ATT momentarily to turn the attenua tor OFF Lights red when the attenuator is set to ON e Noise blanker p 48 While 1 is selected push F 2 noise blanker ON and OFF Push DISPLAY once or twice to select i Push M
135. or flashes Decrease the TNC output level until the transmit indicator lights continuously When transmission is not successful even though the TX indicator lights continuously Increase the TNC output level 70 EE 1 contRoL COMMAND E Remote jack CI V information CI V connection example The transceiver can be connected through an optional CT 17 ci v LEVEL CONVERTER to a personal computer equipped with an RS 232C port The Icom Communi cation interface V CI V controls the following func tions of the transceiver 9 15 V DC Up to four Icom CI V transceivers or receivers can be connected to a personal computer equipped with an RS 232C port See p 82 for setting the CI V condition using initial set mode Personal computer Data format The Cl V system can be operated using the following data formats Data formats differ according to com mand numbers A data area is added for some com mands CONTROLLER TO IC 703 OK MESSAGE TO CONTROLLER FE FE 68 E0 Cn Sc Dataarea FD FE FE 68 EO FB FD Do C ae gt ee es 3 8 2525 afo 8 8 gs 8 8 8 o gt so ES ES oo 2 E os so amp Zz xe O Se Je cw ko ne
136. peration from front panel MIC connector Connect a CW paddle as at right to operate an elec tronic keyer from the front panel MIC connector e This function is available from the front panel mic connector only Be sure to select item n r buG or oFF in in the keyer set mode p 32 e Connect straight key to DOT side oQ Oo Oo 4 qo SS M CH MENU F 2 DISPLAY J dial KEYING WEIGHT EXAMPLE morse code K Weight setting 1 1 3 default _ Weight setting Adjusted DOT DASH Fixed DASH Eee Adjustable range SPACE Fixed SPACE and DO th can be adjusted only CW front panel paddle MIC connector DOT EO Boo 3 9 KQ 5 sore MIC U D DASH 2 2 kQ 5 CW side tone function RECEIVE AND TRANSMIT 4 When the transceiver is in the receive condition and the break in function is OFF below you can listen to the tone of your CW signal without actually trans mitting This allows you to match your transmit signal exactly to another station s This also convenient for CW practice CW side tone level can be adjusted in the initial set mode p 77 Keyer set mode While i is selected in CW mode push F 2 1 sec to enter the keyer set mode This item sets the CW break in operation The break cw T
137. place the dam aged fuse with a new rated fuse CAUTION Disconnect the DC power cable from Y the transceiver when changing a fuse The IC 703 has three of fuses DC power cable fuses x 2 circuitry fuse x1 installed for transceiver protection FUSES eccceceeeeeeeceeeeeeeeeeeteeeseeteeeees F G B 125V4A CIRCUITRY FUSE REPLACEMENT The 13 8 V DC from the DC power cable is applied to all units in the IC 703 except for the power amplifier through the circuitry fuse This fuse is installed in the PA unit E Memory backup All of the CPU s memory is backed up by an EEP ROM Electronically Erasable Programmable Read Only Memory All data you set such as VFO memory set mode contents etc is stored in this EEPROM There is no internal lithium battery E Cleaning If the transceiver becomes dusty or dirty AVOID the use of strong chemical solvents NaS f wipe it clean with a dry soft cloth lt a such as thinner benzine or alcohol to clean the transceiver These may damage the transceiver s surfaces 83 The following chart is designed to help you cor
138. pply DC power cable polarity is correct Red positive terminal Black negative terminal RB QA IAN CONNECTING A DC POWER SUPPLY 13 8 V at least 3 0 A continuous Omo A DC power e supply Black Red oO 0000 Ground Optional Connect to an AC DC power cable outlet using the supplied AC cable OPC 1248 j to DC power receptacle Supplied OPC 1229 AL 4 A fuses E Battery connections gy AWARNING NEVER connect to a battery without supplied DC fuse otherwise a fire hazard occur NEVER connect the transceiver directly to a 24 V battery CONNECTING A VEHICLE BATTERY RA f Z i f Z e DO NOT use the cigarette lighter socket for power connections See p 7 for details Attach a rubber grommet when passing the DC power cable through a metal plate to prevent a short circuit Note Use terminals for the cable connections Lo SS SS 7 eS SeN Supplied DC power cable INSTALLATION AND CONNECTIONS 2 E External antenna tuners and linear amplifier CONNECTING THE AH 4 IC 703 CoO Long wire or optional AH 2b ANT Ground E Ground Coaxial cable from the AH
139. protect the final transis tors In this case an antenna tuner is useful to match the transceiver and antenna Low SWR allows full power for transmitting even when using the antenna tuner The IC 703 has an SWR meter to monitor the antenna SWR continuously E Installation Single body mounting INSTALLATION AND CONNECTIONS 2 Stand ame washer Ae H MB 62 optional Supplied with Gp the MB 62 gt Flat washer CAUTION Non supplied screws longer than 8 mm may damage the internal units To raise the stand With the transceiver upside down pull the stand to wards the rear panel and then upwards as illus trated below Front panel separation While pulling the panel release button towards you slide the front panel to the right fig 1 Attach the optional OPC 581 to the main body and tighten the supplied screw as in fig 2 Attach the other end of the OPC 581 to the de tached front panel as in fig 3 fig 1 Ss ne Lv SS Separation cable CAUTION NEVER detach attach the front panel when connecting the DC power supply or battery ZY Make sure the disconnecting DC power cable from h the 13 8 V receptacle on the transceiver rear 7 panel T Front panel mounting Attach the MB 63 to a flat surface using the two supplied screws fig 1 Fix the detached front panel to the MB 63 as illus
140. pushing LOCK push POWER to turn power ON Initial set mode is selected and one of its items ap pears or more times to select the item Push MENU e M CH or A V can also be used Rotate the main dial to select the data speeds 1200 bps or 9600 bps To exit initial set mode push POWER for 1 sec to turn power OFF Push POWER to turn power ON again e The conditions selected in initial set mode are now ef fective When setting data transmission speed to 9600 bps the pata signal coming from the TNC is applied ex clusively to the internal limiter circuitry to automati cally maintain bandwidth NEVER apply data levels from the TNC of over 0 6 Vp p otherwise the transceiver will not be able to maintain the band width and may possibly interfere with other stations NOTE Read the instructions supplied with your Z TNC carefully before attempting packet operation Z with the IC 703 dr Aii Main dial i When using a level meter or synchroscope adjust the TX audio level DATA IN level from the TNC as follows 0 4 Vp p 0 2 Vrms recommended level 0 2 Vp p 0 5 Vp p 0 1 Vrms 0 25 Vrms acceptable level 2 When not using a measuring device Connect the IC 703 to a TNC Enter a test mode CAL etc on the TNC then transmit some test data 3 When the transceiver fails to transmit test data or transmits sporadically TX indicator doesn t appear
141. rate at which channels or frequen cies are scanned during scan operations High or low can be selected i l ty a Scan speed is set to high default ut m Scan speed is set to low UP DN speed tion is available in AM mode This is useful when communicating in AM mode the noise blanker func tion should not be used when listening to regular AM broadcasts as it may degrade the received audio Noise blanker is available on AM mode default This item sets the rate at which frequencies are Ll I 7 scanned through when the UP DN switches of the re TA microphone are pushed and held High or low can be Up down speed is set to Up down speed selected high default is set to low Noise blanker in AM mode When this item is set to ON the noise blanker func Z Ca are Noise blanker is not available on AM mode Available memo pads This item sets the number of memo pad channels available 5 or 10 memo pads can be selected at 5 memo pads are available default rt ue 10 memo pads are available When is set to ON marked items are undisplayed 80 12 SETMODE This item selects the indication ON or OFF when turn ing power ON on The Transceiver briefly displays All indication RF power and Power supply voltage when turning power ON oFF The display goes directly to frequency indica
142. ration DO NOT operate the transceiver without running the vehicle s engine When the trans ceiver s power is ON and your vehicle s engine is OFF the vehicle s battery will soon become exhausted Make sure the transceiver power is OFF before starting the vehicle This will avoid possible damage to the trans ceiver by ignition voltage spikes During maritime mobile operation keep the transceiver and microphone as far away as possible from the magnetic navigation compass to prevent erroneous indications BE CAREFUL The rear panel will become hot when op erating the transceiver continuously for long periods BE CAREFUL If a linear amplifier is connected set the transceiver s RF output power to less than the linear am plifier s maximum input level otherwise the linear ampli fier will be damaged Use Icom microphones only supplied or optional Other manufacturer s microphones have different pin assign ments and connection to the IC 703 may damage the transceiver Beat signals may be heard on some frequencies These will occur as a result of circuit construction For U S A only Caution Changes or modifications to this transceiver not expressly approved by Icom Inc could void your authority to operate this transceiver under FCC regulations TABLE OF CONTENTS FOREWORD ceninin enoia aa ta a Esae i 1 PANEL DESCRIPTION _ cc0seceeeees 1 10 IMPOR
143. rect problems which are not equipment malfunctions TROUBLESHOOTING 1 4 est Icom Dealer or Service Center If you are unable to locate the cause of a problem or solve it through the use of this chart contact your near OFF PROBLEM POSSIBLE CAUSE SOLUTION REF Power does not come e DC power cable is improperly e Reconnect the power cable correctly p 15 on when the POWER connected gt switch is pushed o e Fuse is blown e Check for the cause then replace the p 83 fuse with a spare one 2 Fuses are installed in two places One is Z installed in the DC power cable and the other is installed in the PA unit re o e Battery is exhausted if you are using e Check the battery voltage with the a 12 V battery as the power source POWER pushed IN No sound comes from e Volume level is set too low e Rotate AF clockwise to obtain a suit pgs 1 the speaker able listening level 17 23 e The squelch is closed e Rotate SQL counterclockwise to pgs 1 open the squelch 17 24 e The transceiver is in the transmitting e Release PTT on the microphone or condition check the SEND line of an external unit if connected e An external speaker or headphones Check the external speaker or head p 14 are connected phone plug connection Sensitivity is low e The antenna is not connected properly e Reconnect to the antenna connector W 2 e The ante
144. rrect any improper conditions e The antenna is not properly tuned e Push TUNE to manually tune the pgs antenna 64 66 e The transceiver turning ON the battery eCheck the battery voltage with the pgs 1 operating mode POWER pushed IN 25 No contact possible with e RIT function is activated e Push RIT to turn the function OFF p 47 otherstations e Split function is activated e Push F 1 F L in the i display to turn p 51 the function OFF Repeater cannot be ac e Split function is not activated e Push F 1 1 in the display to p 51 g cessed turn the function ON e An incorrect transmit frequency is set Set the proper frequencies into VFO p 19 k A and B or into one of the memory channels e Subaudible tone encoder is OFF and Use F 2 FX in the display to se p 45 repeater requires a tone for access lect FM T e Programmed subaudible tone fre e Program the required frequency using p 44 quency is wrong FM tone set mode Transmitted signals are Microphone gain is set too high e Set gain in quick set mode p 26 distorted e The compression level is set too high e Set compression level to a suitable p 54 with the speech compressor ON position 3 Displayed frequency e The dial lock function is activated e Push LOCK to deactivate the func p 25 lt does not change proper tion TA ly e The internal CPU has malfunctioned e Reset the CPU p 17 A While pu
145. shing UP and DN push POW ER to turn power ON Programmed scan does e Squelch is open e Set squelch to the threshold position p 24 not stop Programmed scan does e The same frequencies have been e Programm different frequencies into p 62 Z not start programmed in scan edge memory scan edge memory channels lt channels O 72 Memory scan does not e2 or more memory channels have not e Program 2 or more memory chan p 62 start been programmed nels Memory select scan 2 or more memory channels have not e Designate 2 or more memory chan p 63 E Opening the transceiver case To remove the transceiver case unscrew the 18 screws 5 in the top panel 5 in the bottom panel 8 in the side panels 4 pieces each as shown in the diagram below OPTION UNIT INSTALLATIONS AND SETTINGS 15 Hi Caution Disconnect the DC power cable from the transceiver before performing any work on the transceiver a a 7 E N Top cover gasss N L o Speaker LAN cable _ of A Bottom cover E UT 102 vOICE SYNTHESIZER UNIT The UT 102 announces the accessed band s fre quency mode etc S meter level can also be an nounced p 82 in a clear electronically generated voice in English or Japanese Remove the top cover as shown above Connect the UT 102 as shown in the diagram at right label side up 3 Replace the top cover Operation
146. signal strength Push PTT microphone to transmit e The TX indicator lights red Speak into the microphone at your normal voice level Adjust MIC GAIN at this step if necessary p 26 Release PTT microphone to return to receive Convenient functions for receive RECEIVE AND TRANSMIT AF TX indicator MODE LSB or USB appears Main dial Po Preamp and attenuator p 46 Push P AMP ATT momentarily to set the preamp ON or OFF Lights green when the preamp is set to ON Push P AMP ATT for 1 sec to set the attenuator ON Push P AMP ATT momentarily to turn the attenua tor OFF e Lights red when the attenuator is set to ON Noise blanker p 48 While 1 is selected push F 2 noise blanker ON and OFF e Push DISPLAY once or twice to select e Push MENU one or more times to select NB appears when the noise blanker is set to ON e Push F 2 amp for 1 sec to enter the noise blanker set mode to turn the elF shift p 47 Rotate SHIFT control e AGC auto gain control p 48 While is selected push F 3 AGC fast and AGC slow Push DISPLAY once or twice to select Push MENU one or more times to select f FaGc appears when the fast time constant is se lected to select e Noise reduction p 50 While is selected push F 2 nois
147. signal strength e If the received signal cannot be demodulated try se lecting GIRTTY mode or RTTY mode Transmit a SEND signal from your TNC e The TX indicator lights red The Po meter indicates transmitted RTTY signal strength Operate the connected PC or TNC TU to trans mit RTTY FSK signals osag a 38 39 4 RECEIVE AND TRANSMIT Convenient functions for receive Preamp and attenuator p 46 Push P AMP ATT momentarily to set the preamp ON or OFF Lights green when the preamp is set to ON Push P AMP ATT for 1 sec to set the attenuator ON Push P AMP ATT momentarily to turn the attenua tor OFF e Lights red when the attenuator is set to ON e Noise blanker p 48 While 1 is selected push F 2 noise blanker ON and OFF e Push DISPLAY once or twice to select Push MENU one or more times to sele NB appears when the noise blanker is set to ON e Push F 2 i for 1 sec to enter the noise blanker set mode to turn the AGC auto gain control p 48 While 1 is selected push F 3 AGC fast and AGC slow e Push DISPLAY once or twice to select Push MENU one or more times to sele Fac appears when the fast time constant is se lected to select elF shift p 47 Rotate SHIFT control e Noise reduction p 50 While is selected push F 2 noise reduction ON and OFF
148. the SWR to less than 1 5 1 after checking the above perform the follow ing repeat manual tuning several times tune with a 50 Q dummy load and re tune the antenna eturn power OFF and ON e adjust the antenna cable length This is effective for higher frequencies in some cases e Some antennas especially for low bands have a nar row bandwidth These antennas may not be tuned at the edge of their bandwidth therefore tune such an antenna as follows 64 65 9 ANTENNA TUNER OPERATION Optional external tuner operation The IC 703 automatically detects and selects an optional external tuner AT 180 AH 4 when connected In this case the internal tuner switches to the through function Y NOTE When the connected power supply voltage is lower than 11 0 V the transceiver automatically switches to the battery operating mode power sav ing mode In this case the transceiver can not drive Zan external antenna tuner MAW NOTE When connecting the optional antenna tuner AT 180 the IC 703 s output power must be set max imum 10 W both in quick set mode and initial set mode Otherwise the AT 180 may not be tuned cor rectly AT 180 s minimum operating input power is 8 W WWAA AN Optional AT 180 AUTOMATIC ANTENNA TUNER Operation The AT 180 automatic antenna tuner matches the IC 703 to the connected antenna automatically Once the tuner matches an antenna the variable capacitor an
149. tion at power ON E Power on check function D D5 m7 ues Power on check ON default Power on check OFF The optional AT 180 ANTENNA TUNER has an automatic start capability which starts tuning if the SWR is higher than 1 5 3 oFF The tuner remains OFF even when the SWR is poor 1 5 3 on Automatic tune starts even when the tuner is turned OFF fx Auto tune start function lo be oe L oe Auto tune function OFF default Auto tune function ON 4 NOTE Even when on is selected automatic tune Z does not start for the 50 MHz band PTT tune function This item set the PTT tuner start function ON or OFF This function activates internal tuner and optional AT 180 AH 4 ANTENNA TUNER when connected on The tuner is always tuned when the PTT is pushed after the frequency is changed more than 1 from last tuned frequency Internal tuner or connected AT 180 Tuning can be started automatically at the mo ment the PTT is pushed Connected AH 4 oFF PTT tuner start function OFF ZE 22 mr u Tuning starts only when Tuning starts when pushing TUNER is pushed default PTT on a new frequency zni Tuner switch condition This item select BAND or ALL bAnd TUNER switch ON OFF condition is re mained for each band ALL TUNER switch ON OFF condition is com monly remained for all band 2 il i D a aar Er E La Fee a The default
150. tor p 46 Push P AMP ATT momentarily to set the preamp ON or OFF e Lights green when the preamp is set to ON Push P AMP ATT for 1 sec to set the attenuator ON Push P AMP ATT momentarily to turn the attenua tor OFF e Lights red when the attenuator is set to ON Noise blanker p 48 While 13 is selected push F 2 noise blanker ON and OFF Push DISPLAY once or twice to sele Push MENU one or more times to sele i NB appears when the noise blanker is set to ON e Push F 2 amp for 1 sec to enter the noise blanker set mode e Initial set mode item p 80 is must be set ON when noise blanker function is used in AM mode Default setting is ON to turn the elF shift p 47 Rotate SHIFT control eAGC auto gain control p 48 While i is selected push F 3 AGC fast and AGC slow Push DISPLAY once or twice to select e Push MENU one or more times to select f FaGc appears when the fast time constant is se lected to select e Noise reduction p 50 While is selected push F 2 noise reduction ON and OFF Push DISPLAY once or twice to select e Push MENU one or more times to select e Push F 3 if then rotate M CH to agua the noise reduction level NR appears when the noise reduction is set to ON to turn the e Auto notch filter p 50 While
151. ts Push F 1 f for 1 sec to program the displayed frequency and operating mode into the memory channel To check the programmed contents push F 3 to select memory mode oO yO oO CO o C TEEME fo MENU F 3 M CH F 1 DISPLAY EXAMPLE Programming 7 088 MHz LSB into ch 12 VFO A I _ ta LSB M CH SHIFT Programming in memory mode Q Select f functions e Push DISPLAY once or twice to select Push MENU one or more times to select 22 Set the desired frequency and operating mode 3 Push F 3 F to select memory mode then se lect the desired memory channel with M CH Push 4 when you want to program blank chan nels Push F 1 for 1 sec to program the displayed frequency and operating mode into the memory channel CO oO oO e ME Ti a 3 M CH F 1 af T 4 9 m IT MEMO ILICH E Memory clearing MEMORY OPERATION Any unnecessary memory channels can be cleared The cleared memory channels become blank chan nels Select 1 functions e Push DISPLAY once or twice to select fi Push MENU one or more times to selec Push F 3 ii t i to select memory mode Rotate M CH to select a memory channel to be cleared Push F 2 8 1 for 1 sec to clear the contents The programmed frequency and operating mode dis
152. tuning or while tuning Band stacking register To send or read the desired band stacking register s con tents combined code of the frequency band and register codes as follows are used For example when sending reading the contents in the 21 MHz band the code 0701 is used e Frequency band code Code Freq band Frequency range unit MHz 01 1 8 1 800000 1 999999 02 3 5 3 400000 4 099999 03 7 6 900000 7 499999 04 10 9 900000 10 499999 05 14 13 900000 14 499999 06 18 17 900000 18 499999 07 21 20 900000 21 499999 08 24 24 400000 25 099999 09 28 28 000000 29 999999 10 50 50 000000 54 000000 11 GENE Other than above e Register code Code Registered number 01 1 Codes for memory keyer contents To send or read the desired memory keyer contents the channel and character codes as follows are used Channel code Code Channel number 01 MK1 02 MK2 03 MK3 e Character s code Character ASCII code Description 0 9 30 39 Numerals A Z 41 5A _ Alphabetical characters space 20 Word space 2F Symbol 3F Symbol i 2C Symbol 2E Symbol 5E e g to send BT enter 4254 2A Inserts contact number can be used for 1 channel only Codes for memory name contents To send or read the desired memory name settings the character codes instru
153. upplied screws plus rubber feet as shown below Rubber feet Attach the MB 72 to the left side of the transceiver as shown below Carrying handle 2 bA oO 88 15 OPTION UNIT INSTALLATIONS AND SETTINGS E AT 180 internal switch description The optional AT 180 has 3 operating conditions for HF band operation Select a suitable condition according to your antenna system Remove the top cover of the AT 180 Set the tuner switches to the desired positions ac cording to the table below SW Position Operation AT 180 inside top cover The tuner operating condition is set by S2 default described below THROUGH INHIBIT The tuner tunes the antenna even when the antenna has poor SWR up to VSWR 3 1 after tuning In this case manual tuning is B necessary each time you change the fre quency although the tuner automatically starts tuning when the VSWR is higher than 3 1 This setting is called through inhibit however the tuner is set to through if the VSWR is higher than 3 1 after tuning S1 TUNER SENSITIVE CONDITION The tuner tunes each time you transmit ex C cept SSB mode Therefore the lowest SWR is obtained at any given time For SSB mode the same condition as the D position NORMAL CONDITION D The tuner tunes when the SWR is higher default than 1 5 1 Therefore the tuner activates only when tuning is necessary S2
154. ush DISPLAY once or twice to select Push MENU one or more times to select 2 Push F 1 4F to activate the automatic notch fil ter Z OTE Your IC 703 is equipped with an AGC cir uit This allows the DSP to filter out interfering sig als and QRM while also taking this interference ut of the AGC Bottom line this will either elimi ate or greatly reduce the pumping of the AGC from the interfering signal Cc n 0 n RM WWAQA AA Appear Hint The Automatic Notch will not operate in the CW RTTY or SSB D modes d Noise Blanker The noise blanker function re duces pulse type noise such as that generated by automobile ignition systems This function is not ef fective for FM modes or for non pulse type noise Select H Push DISPLAY once or twice to select e Push MENU one or more times to selec 2 Push F 2 E to activate the noise blanker NB appears when the function is ON Appears MB Si 3 579 20 40 6048 VFOA a e Adjusting the Noise Blanker The noise blanker is completely variable on how much of the Noise Blanker is used Push F 2 for 1 sec to enter the noise blanker level set mode Rotate the main dial to set the noise blanker level Push DISPLAY to exit the noise blanker level set mode O M O O o a Yo PSPL F Main dial
155. ut voltage 8 V 40 3 V L 8v Regulated 8 V utput Output current Less than 10 mA 2 GND Connects to ground Input output pin HF 50 MHz only Ground level 0 5 V to 0 8 V 3 HSEND Goes to ground when transmitting Output current Less than 20 mA When grounded transmits Input current Tx Less than 200 mA 4 BDT Data line for the optional AT 180 Band voltage output 5 BAND Varies with amateur band Output voltage 0 to 8 0 V Control voltage 4Vto0V Rear panel view G ALC ALC voltage input Input impedance x More than 10 kQ brown gray 1 NC red white 13 8 V 13 8 V output when power is ON Output current Max 1 A orange black yellow pink 9 TKEY Key line for the optional AT 180 a light he ate High level More than 2 4 V purple light 10 FSKK Controls RTTY keying Low level Less than 0 6 V green Output current Less than 2 mA 11 MOD Modulator input Input impedance 10 kQ Connects to a modulator Input level Approx 100 mV rms AF detector output i Output impedance 4 7 KQ 12 AF Fixed regardless of AF position in Output level 100 300 mV rms default settings 13 SQLS Squelch output SQL open Less than 0 3 V 5 mA Goes to ground when squelch opens SQL closed More than 6 0 V 100 pA Color refers to the cable strands of the supplied cable e When connecting the ACC conversion cable OPC 599 FSKK GND Oe Conne
156. ww arrl org e Typical amateur radio installation Exposure distance assumes that the predominant ra diation pattern is forwards and that radiation vertically downwards is at unity gain sidelobe suppression is equal to main lobe gain This is true of almost every gain antenna today Exposed persons are assumed to be beneath the antenna array and have a typical height to 1 8 m The figures assume the worst case emission of con stant carrier For the bands 10 MHz and higher the following power density limits have been recommended 10 50 MHz 2 W sq m EIRP clearance heights by frequency band 1 Watts 2 1m 10 Watts 2 8m 25 Watts 3 4m 100 Watts 5m 1000 Watts 12m Forward clearance EIRP by frequency band 100 Watts 2m 1000 Watts 6 5m 10 000 Watts 20m 100 000 Watts 65m In all cases any possible risk depends on the transmit ter being activated for long periods actual recom mendation limits are specified as an average during 6 minutes Normally the transmitter is not active for long periods of time Some radio licenses will require that a timer circuit automatically cuts the transmitter after 1 2 minutes etc Similarly some types of transmitter SSB CW AM etc have a lower average output power and the assessed risk is even lower CE Q Versions of the IC 703 which display the CE symbol on the serial number seal comply with the essential requirements of the European Radio and Telecommunication Termina
157. your neighbours may experience interference Even though many of these devices are Part 15 where they must accept interference from their surrounding environment it is best to eliminate as much of the possible interference from your shack If you do not have a grounding system for your shack depending on the location of your shack basement or ground floor a good ground system can be as simple as a couple of ground rods driven 6 to 8 feet into the soil When installing your IC 703 to your grounding system the shortest most direct connection is recom mended gy NOTE There are many publications covering Y proper grounding techniques Check with your local dealer for more information and recommendations r o POTRO e Y A WARNING NEVER ground station equip Zul or antennas to house gas lines NEVER at tach ground lines to plastic pvc pipe Some Symptoms if inadequate grounding a Poor DC Ground 50 60 Hz hum on the audio either Rx or Tx without the antenna connected If you feel a tingling sensation when you touch a metal surface Surfaces such as the cover of your radio or power supply b Poor RF Ground While transmitting and you feel a tingling sensation when you touch a metal surface Surfaces such as the cover of your radio or power supply While transmitting you experience interference to other electronic devices

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