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SET MODE

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2. w amem Fure MIC The AFSK modulation signal can be input from MIC p 21 e Rear panel ANTENNA 1 2 pgs 18 20 Connects a linear amplifier antenna selector etc TRANSVERTER p 19 Connects a transverter for V UHF band use REMOTE pgs 12 72 Used for computer control and transceive operation Op RX ANTENNA Ca amp Ca A gt e len gt S QO soo 0 e gt 09 When using the AH 4 or AH Y Ys it must be connected to 7 AH 2b 4 the ANT1 connector ACC SOCKETS p 13 Nz EXTERNAL SPEAKER p 81 SEND ALC p 19 Used for connecting a non lcom linear ampli fier E Power supply connections Use an optional DC power supply with a 25 A capacity and above when operating the transceiver with AC power Refer to the diagrams below INSTALLATION AND CONNECTIONS 3 CAUTION Before connecting the DC power cable check the following important items Make sure e The POWER switch is OFF Output voltage of the power source is 12
3. Miscellaneous others set mode p 68 AGC OTHERS SET MID Beep Confirmation ON BeePp Band Ed9e ON RF SQL Control RF SQL Quick Dualwatch ON Quick SPRIT ON FM SPLIT Offset HF 6 196MHz DEF WIDE E Level set mode SET MODE 9 This item adjusts the bass level of the transmit audio tone in SSB mode from 5 dB to 5 dB in 1 dB steps bie dE 0 dB default This item adjusts the treble level of the transmit audio tone in SSB mode from 5 dB to 5 dB in 1 dB steps AdB 0 dB default This item adjusts the transmit IF signal monitor level from 0 to 100 in 1 steps See p 35 for details mi 1 SAY 50 default This item adjusts the CW side tone level from 0 to 100 in 1 steps See p 35 for details mi 1 SAY 50 default This item allows you to set a maximum volume level for CW side tones CW side tones are linked to the AF control until a specified volume level is reached further rotation of the AF control will not increase the volume of the CW side tones CH OFF CW side tone level is limited CW side tone level is linked with AF default to AF This item adjusts the volume level for confirmation beep tones from 0 to 100 in 1 steps When beep tones are turned OFF this setting has no effect m 1 SA 50 defau
4. MAIN unit 77 78 13 CONTROL COMMAND 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 cations Interface V CI V controls the following func tions of the transceiver Up to 4 Icom CI V transceivers or transceivers can be connected to a personal computer equipped with an RS 232C port See p 72 for setting the CI V condition using set mode e Data format The CI V system can be operated using the following data formats Data formats differ according to com mand numbers A data area or sub command is added for some commands CONTROLLER TO IC 756PRO 5C E0 Cn Sc Data area T1 m TI m FD see table at right Sub command number see table at right Command number Preamble code fixed S gt Transceiver s default address memory number entry Controller s default address BCD code data for frequency or End of message code fixed IC 756PRO TO CONTROLLER FE FE E0 5C Cn Sc Data area FD T 2 D DEDE 62 T d 2525 De 2 ZX ES ES ws E D D LE 8 8 s255 Cie v o EGC 2 2 58882 se 8 a a agog D 5 oo o EVE ZES o S TD DT EVER ee g E H a OHQH oO ro oO Tr Tr O Oo e o
5. PET G2 4k em 6 Une 12 00 CED VFO FIL2 pai L CE 1 95 oo 14 166 68 USE F AMF 1 WFO USB FIL2 ATT IU 205 0 10 ME 1 14 100 00 USB AGC MID WOK OFF COMP OFF WIDE SCOPE VOTCE MEMORY SCAH SET ore Set mode screen AAT EM2 4k en 12 00 D UFO FILZ 14 195 00 14 188 06 P AMP 1 UFO USB FILZ It e0S O00 14 168 8 USE SET MODE SET MODE MENU LEVEL DISP TR Tone Monitor Side Tone etc Bright Contrast Style Font etc ORE z 1 AGC MID COME TIME Clock Timer ie OTHERS Other Set Mode LEVEL DISE TIHE OTHERS Set the desired condition using the tuning dial Push F 3 DEF to select a default condition or value For timer set mode push F 4 SET to enter the set time Push EXIT twice to exit the set mode D D O pa Oo D oO Level set mode p 65 LEUEL SET SSB TX Tone Bass SSB TX Tone Treble Monitor Level 50x Side Tone Level m 50x Side Tone Level Limit ON Beep Level 50x Beep Level Limit ON T DEF m EE dB DISPLAY SET Contrast LCD Bright LCD Horizon Backlight Suitches Display Type DisPlay Font Memory Name LE M Time Now 12 00 Power ON Timer Set 0 00 Power 0FF Period 68min
6. CI V REMOTE CONTROL JACK REMOTE p 16 Designed for use with a personal computer for re mote control of transceiver functions Used for transceive operation with another Icom CI V transceiver or receiver EXTERNAL SPEAKER JACK EXT SP pgs 16 81 Accepts an 4 8 Q speaker ALC INPUT JACK ALC p 19 Connects to the ALC output jack of a non lcom lin ear amplifier SEND CONTROL JACK SEND p 19 Goes to ground while transmitting to control exter nal equipment such as a linear amplifier e Max control level 16 V DC 2 A DC POWER SOCKET DC 13 8V p 15 Accepts 13 8 V DC through the supplied DC power cable OPC 025D Rear panel l z D al view Reg ANTENNA CONNECTOR 1 ANT1 ANTENNA CONNECTOR 2 ANT2 pgs 14 15 Accept a 50 Q antenna with a PL 259 connector PANEL DESCRIPTION 2 GROUND TERMINAL GND pgs 14 15 Connect this terminal to a ground to prevent electri cal shocks TVI BCI and other problems G Nhen using an optional AH 4 HF 50 MHz AUTO Y A MATIC ANTENNA TUNER or AH 3 HF AUTOMATIC AN ZY TENNA TUNER connect it to the ANT1 connector The internal antenna tuner activates for ANT2 and A the ir Gere for ANT1 when connecting the AH 4 or 7 AH 3 ACC SOCKETS ACC 1 PIN NO PIN NAME DESCRIPTION SPECIFICATIONS HIGH level More than 2 4 V 1 RTTY Controls RTTY keying LOW level
7. PBT CLR NOTCH NOTCH CW PITCH Cre En COMPRESSION LEVEL CONTROL COMP p 37 Adjusts the speech compression level in SSB Compression level decreases COMP Compression level increases ELECTRONIC CW KEYER SPEED CONTROL KEY SPEED p 42 Adjusts the internal electronic CW keyer s speed 6 wpm min to 60 wom max can be set Slow Fast KEY SPEED SEMI BREAK IN DELAY CONTROL BK IN DELAY Adjusts the transmit to receive switching delay time for CW semi break in operation Short delay for Long delay for high speed keying slow speed keying 2 dot BK IN DELAY 13 dot MODE SWITCHES Selects the desired mode p 26 Announces the selected mode when an optional UT 102 is installed pgs 71 73 Selects USB and LSB mode alternately Toggles SSB and SSB data mode USB D LSB D when pushed for 2 sec Selects CW and RTTY mode alternately Toggles CW and CW R CW reverse mode when pushed for 2 sec in CW mode Toggles RTTY and RTTY R RTTY re verse mode when pushed for 2 sec in RTTY mode Selects AM and FM mode alternately Toggles AM FM and AM FM data mode AM D FM D when pushed for 2 sec LCD FUNCTION SWITCHES F 1 F 5 Push to select the function indicated in the LCD dis play above these switches Functions
8. vox OFF AF SPan 16kHz iy Programmed Pi 6 560 0 MHZz ith Scan edges P2 29 999 99MHz WIDE MEMO AF SELECT AF SPAH SET 4 Select the desired memory channel to set as se lect memory channel Push F 3 SELECT to set the memory channel as a select memory or not adr appears for select memory channels EE dk ya o 12 00 D 12 FIL2 195 00 UFO 14 160 06 USE UFO USB FILZ IU 20S DC 1 14 160 68 USB SCAN dF SPan Programmed Pi scan edges P2 Repeat steps to to program another memory channel as a select memory channel if desired Push EXIT to exit the scan screen G Select memory channels can also be set in the Z 7 memory channel screen p 51 WSN 59 60 7 SCANS E Scan set mode Scan set mode is used for programming scanning speed and scan resume condition e Scan speed The transceiver has 2 speeds for scanning high and low Push EXIT one or more times to close a multi function screen if necessary 2 Push F 4 SCAN to select the scan screen 12 00 EN Ga ZA D VFO FILZ 14 195 00 i4 188 06 USE UFO USB FILZ Id 2OS O0 1 14 160 06 USE AF SPan Programmed Pit Scan edges P2 3 Push F 5 SET to select the scan set mode screen Push F 1 to select the scan speed item AG
9. ELECTRONIC KEYER JACK ELEC KEY p 42 Accepts a paddle to activate the internal electronic keyer for CW operation e Selection between the internal electronic keyer bug key and straight key operation can be made in keyer set mode p 42 A straight key jack is separately available on the rear panel See KEY on p 12 e Keyer polarity dot and dash can be reversed in keyer set mode p 42 4 channel memory keyer is available for your conve nience p 43 Q gt O A MICROPHONE CONNECTOR MIC Accepts the supplied or optional microphone e See p 81 for appropriate microphones e See p 9 for microphone connector information AF CONTROL AF inner control Varies the audio output level from the speaker AF2 RF SQL Decreases Increases No audio output Max audio output MIC GAIN CONTROL MIC GAIN Adjusts microphone input gain e The transmit audio tone in SSB mode can be adjusted in set mode p 65 How to set the microphone gain Set the MIC control so that the ALC meter sometimes swings during normal voice transmission in SSB mode Recommended level for an Icom microphone Decreases y Increases MIC GAIN RF GAIN CONTROL SQUELCH CONTROL RF SQL outer control 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 ef
10. USE 14 195 00 ones 14 182 40 MEMO _ PADS 21018 06 2102452 2127600 Oldest The oldest written frequency ER and mode are erased 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 MP R one or more times Both VFO and memory modes can be used 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 MP R the previously dis played frequency and operating mode are automati cally stored in a temporary pad The frequency and operating mode in the temporary pad can be recalled by pushing MP R one or more times You may think there are 6 memo pads because 6 different frequencies 5 are in memo pads and 1 is in the tempo rary pad are called up by MP R If you change the frequency or operating mode called up from a memo pad with the tuning dial etc the frequency and operating mode in the tem porary pad are erased WAG A MEMO PADS USE 14 195 00 14 182 40 if 2101806 USB 5 I4 195 00 E 1024 52 Push VFO or MEMORY mode display 2 127600 Pushing MP R calls up the frequency and operating mode in a memo pad and the temporary pad sequentially TEMPORARY PAD USB
11. Push SPLIT e The shift frequency is input in the sub readout and the split function is turned ON EXAMPLE To operate on 1 kHz higher frequency E En To operate on 3 kHz lower frequency CONVENIENT DUALWATCH FUNCTION The dualwatch function is convenient for tuning the transmit frequency while monitoring both frequencies used for transmitting and receiving CONVENIENT SPLIT LOCK FUNCTION Accidentally releasing the XFC switch while rotating the tuning dial changes the receive frequency To pre vent this use both the split lock and dial lock functions to change the transmit frequency only The split lock function cancels the dial lock function while pushing XFC during split frequency operation The dial lock s effectiveness during split frequency op eration can be selected in the set mode for both re ceive and transmit frequencies or only the receive frequency p 69 E Quick split function RECEIVE AND TRANSMIT 9 When you find a DX station an important considera tion is how to set the split frequency When you push the SPLIT switch for 2 sec split fre quency operation is turned ON the sub readout is equalized to the main readout frequency and enters standby for transmit frequency input This shortens the time needed to start split frequency operation The quick split function is ON by default For your con venience it can be turned OFF in set mode p 6
12. ATT p 5 a OFF Receive audio is distorted e The operating mode is not selected correctly e Select a suitable operating mode p 26 e PBT function is activated Push PBT CLR for 2 sec to reset the function p 26 e Noise blanker function is activated e Push NB to turn the function OFF p 27 Preamp is activated Push P AMP once or twice to turn the function p 5 OFF e The noise reduction is activated and the NR Set the NR control for maximum readability p 27 control is set too far clockwise The ANT switch does not The antenna switch has not been activated e Set the antenna switch in set mode to Auto or p 45 function Manual Transmitting is impossi e The operating frequency is not set to a ham Setthe frequency to a ham band p 24 ble band Output power is too low e RF POWER is set too far counterclockwise Rotate RF POWER clockwise p 3 MIC GAIN is set too far counterclockwise e Set MIC GAIN to a suitable position p 2 e The antenna for another band is selected Select an antenna suitable for the operating p 5 frequency e The antenna is not properly tuned Push TUNER for 2 sec to manually tune the p 48 antenna 2 lt No contact possible with RIT or ATX function is activated e Push RIT or ATX to turn the function OFF p 6 He another station e Split frequency function and or dualwatch are Push SPLIT and or DUALWATCH to turn the pgs 7 a
13. 1U 05S 00 1 14 188 68 USE 41 D RECEIVE AND TRANSMIT E Electronic CW keyer The transceiver has an electronic keyer Keying speed can be adjusted with KEY SPEED Keying weight the ratio of dot space dash can be set from 1 1 2 8 to 1 1 4 5 in keyer set mode e Setting the electronic keyer Push CW RTTY once or twice to select CW mode 0000000 Ooo 00 i 0 ENS Ga AN 12 00 D VFO FILZ T14 195 00 i4 188 06 USE UFO Cl FILZ 14 205 000 1 14 180 08 USB MEMORY KEVER MEMORY KEYER MENU SEND Max 54 Characters x 4ch EDIT Memory Editor oa1 001 Style Contest Number CU KEY Memo kes Elec kes CW Wave Form Set SEND EDIT GEN Ch KEY 3 Push F 4 CW KEY to select memory keyer set mode 4 Select the Keyer Repeat Time item using F 1 __ FEVER CURE Keyer RePeat Time 28 Dot Dash Ratio 1 1 3 6 Rise Time 4ms Paddle Polarity Normal Keser Type ELEC KEY MIC UP Down Keser OFF T DEF Rotate the tuning dial to select the memory keyer repeat interval See the next page for details 1 2 3 10 or 30 sec can be set e Push F 3 DEF to select a default interval of 2 sec Push F 2 to select the Dot Dash Ratio item ABC EEE Er MID Keser Repeat Time 2s BK IH Rise Time 4ms OFF P
14. Less than 0 6 V Output current Less than 2 mA 2 GND Connects to ground Connected in parallel with ACC 2 pin 2 Input output pin Ground level 0 5 V to 0 8 V 3 SEND Goes to ground when transmitting Output current Less than 20 mA When grounded transmits Input current Tx Less than 200 mA Connected in parallel with ACC 2 pin 3 AS 4 MOD Modulator input Input impedance 10kQ D Connects to a modulator Input level Approx 100 mV rms ar AF detector output Output impedance 4 7 KQ 5 AF Fixed regardless of AF position in Output level 100 to 300 mV rms Rear panel default settings see notes below view Squelch output Squelch open Less than 0 3 V 5 mA 6 SQLS Goes to ground when squelch Squelch closed More than 6 0 V 100 HA opens Output current Max 1 A 13 8 V 13 8 V output when poweris ON Connected in parallel with ACC 2 pin 7 Control voltage 4 to 0 V 8 ALC ALC voltage input Input impedance More than 10 kQ Connected in parallel with ACC 2 pin 5 ACC 2 PIN NO PIN NAME DESCRIPTION SPECIFICATIONS Output voltage 8 V 0 3 V 1 ae Feat es y Output Output current Less than 10 mA 2 GND Same as ACC 1 pin 2 QT 3 SEND Same as ACC 1 pin 3 T D 4 BAND Band voltage output Output voltage 0 to 8 0 V Varies with amateur band i 4 Rear panel 5 ALC Same as ACC 1 pin 8 a 6 TRV Activates XVERT input output Input impedance More than 10 kQ when HIGH voltage is applied Input voltage
15. 100 Hz tuning step 1 kHz tuning step 5 kHz tuning step 9 kHz tuning step 10 kHz tuning step 12 5 kHz tuning step 20 kHz tuning step 25 kHz tuning step Set preamp O OFF 1 preamp 1 2 preamp 2 Set AGC time constant 1 FAST 2 MID 3 SLOW Set noise reduction 0 OFF 1 ON Set speech compressor 0 OFF 1 ON Set RTTY filter notch O OFF 1 ON Attenuator OFF Attenuator ON 6 dB Attenuator ON 12 dB Attenuator ON 18 dB Read the transceiver ID Select ANT1 Select ANT2 Add 0 or 1 to turn RX ANT OFF or ON respectively Send read memory contents Send read band stacking register contents Send read CW keyer contents Set repeater tone frequency Set tone squelch tone frequency Announce with voice synthesizer 00 all data 01 frequency and S meter level 02 receive mode Set the transceiver to receive or transmit condition 0 Rx 1 Tx 79 80 1 4 SPECIFICATIONS General e Frequency coverage Receive 0 030 60 000 MHz Transmit 1 800 1 999 3 500 3 999 7 000 7 300 10 100 10 150 14 000 14 350 18 068 18 168 21 000 21 450 24 890 24 990 28 000 29 700 50 000 54 000 Some frequency bands are not guaranteed 2 Depending on version e Mode USB LSB CW RTTY AM FM e Number of memory 101 99 regular 2 scan edges channels e Antenna connector SO 239x2 and phono RCA 50 Q 10 C to 50 C
16. 15 V when you use a non lcom power supply e DC power cable polarity is correct Red positive terminal Black negative terminal CONNECTING A DC POWER SUPPLY AC outlet A DC power supply 13 8 V 25A Black Red socket Supplied AC cable 30 A fuses Transceiver to DC power DC power cable QUO O 000000 000 ms O0 CO CONNECTING A VEHICLE BATTERY EVER connect to 24 V battery W NOTE Use terminals for the cable connections Crimp battery P Supplied ES DC power cable 18 3 INSTALLATION AND CONNECTIONS E Linear amplifier connections Use the ANT1 connector when connecting a linear amplifier CONNECTING THE IC PW1 Remote control cable supplied with the IC PW1 To an antenna acc 4 ACC cable supplied with the IC PW1 Be sure to connect the cable to the 7 pin ACC 2 jack Coaxial cable INPUT1 supplied with the IC PW1 INPUT2 Connect INPUT2 if necessary Coaxial cable optional EXCITER ANT2 REMOTE Dee ji D QUI oo om CO Q000 CO ANT1 ACC 2 lt gt ja IC PW1 AC outlet Ground IC 756PRO Non European versions 100 120 220 240 V
17. 45 Toggles the RX ANT receive antenna ON and OFF when pushed for 2 sec 4 When a transverter is in use this ANT 7 does not function and TRV appears Selects RF power Po ALC SWR or COMP metering during transmit p 36 Toggles the multi function digital meter ON and OFF when pushed for 2 sec Selects one of 2 receive RF preamps or bypasses them P AMP1 activates 10 dB preamp for HF all bands P AMP2 activates 16 dB high gain preamp for 21 MHz band and above v What is the preamp The preamp amplifies received signals in the front end cir cuit to improve the S N ratio and sensitivity Select P AMP1 or P AMP2 when receiving weak signals Selects 6 dB 12 dB or 18 dB attenuator or bypasses them What is the attenuator The attenuator prevents a desired signal from 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 Activates or selects fast middle or slow AGC time constant when pushed FAST is only available for FM mode Enters the AGC set mode when pushed for 2 sec AGC time constant can be set between 0 1 to 8 0 ec depends on mode or turned OFF While 7 OFF is selected the S meter does not function NN PANEL DESCRIPTION 2 v W
18. A passband width is changed G This filter set mode screen graphically displays the Y PBT shift frequencies and CW pitch operations 29 30 D RECEIVE AND TRANSMIT E AGC function The AGC auto gain control controls receiver gain to produce a constant audio output level even when the received signal strength is varied by fading etc The transceiver has 3 AGC characteristics time con stant fast mid slow for non FM mode GY The FM mode AGC time constant is fixed as FAST A 0 1 sec and AGC time constant cannot be se OW 8 e AGC time constant selection Select non FM mode 2 Push AGC one or more times to select AGC fast AGC medium MID or AGC slow ARC Medium AGC time constant MIC Hari Slow AGC time constant Fast AGC time constant e Selectable AGC time constant unit sec Mode Default Selectable AGC time constant 0 3 FAST OFF 0 1 0 2 0 3 0 5 0 8 SSB 2 0 MID 1 2 1 6 2 0 2 5 3 0 4 0 6 0 SLOW 5 0 6 0 0 1 FAST OFF 0 1 0 2 0 3 0 5 0 8 CW 0 5 MID 1 2 1 6 2 0 2 5 3 0 4 0 1 2 SLOW 5 0 6 0 OFF 0 1 0 2 0 3 0 5 0 8 MID 1 2 1 6 2 0 2 5 3 0 4 0 RTTY 0 5 1 2 SLOW 5 0 6 0 3 0 FAST OFF 0 3 0 5 0 8 1 2 1 6 AM 5 0 MID 2 0 2 5 3 0 4 0 5 0 6 0 7 0 SLOW 7 0 8 0 FM 10 1 FAST Fixed e Setting the AG
19. d UFO USE FIL2 ATT IU205 00 or 1 14 168 68 LISE AGC MID Pi 0 500 090 LSB FL2 SCAN EDGE vox P2 29 999 99 USB _FL2 SCAN EDGE OFF gt EENAA ae COMP ry ne PAGE RIES OFF 2e WIDE 4 oo ROLL SELECT RATE WIDE air appears for select memory channel 4 Repeat steps to to program another memory channel as a select memory channel if desired 5 Push EXIT to exit the memory channel screen 7 Setting select memory channels is also possible in the scan screen WS A 51 6 MEMORY OPERATION E Memory channel programming Memory channel programming can be preformed ei ther in VFO mode or in memory mode Programming in VFO mode D Set the desired frequency and operating mode in VFO mode 2 Push A W several times to select the desired memory channel e Memory channel screen is convenient for selecting the desired channel e Memory channel contents appear in the memory chan nel readout below the frequency readout e appears if the selected memory channel is a blank channel and does not have contents 3 Push MW for 2 sec to program the displayed fre quency and operating mode into the memory channel EXAMPLE Programming 7 088 MHz LSB into memory channel 12 Eni d Ga JA 12 00 D VFO FIL2 14 100 00 i4 195 00 USE lca 12 00 CUD Fo FILZ 708800 1
20. gt 0 3 5 gt 28 20 gt LS O5 2 9 De T o AMMA 0wMMwM W G power settings could cause a fire or ruin the linear amplifier To an l 50 Q coaxial cable antenna ANT1 Transceiver RF OUTPUT RF INPUT AD U 000000 000 Q000 60 The specifications for the SEND relay are 16 V DC 2 A If this level is exceeded a large external relay must be used E Transverter jack information mit any signals p 13 While receiving the XVERT jack can be activated as an input terminal from an external transverter While transmitting the XVERT jack outputs signals of the displayed frequency at 20 dBm 22 mV as signals for the external transverter When 2 to 13 8 V is applied to pin 6 of ACC 2 the XVERT jack is activated for transverter operation and the antenna connectors do not receive or trans NOM T 000000 000 Q000 OO Transverter jack 3 INSTALLATION AND CONNECTIONS E External antenna selector or antenna tuner connections CONNECTING THE EX 627 Coaxial cable supplied with the EX 627 ANT1 000000 000 ce 0000 OO o leo O66 Q 00000 Ground CONNECTING THE AH 4 or AH 3 e The AH 4 and AH 3 must be connected to ANT1 e The AH 3 can be used for the HF bands only although the ANT 1 con nector is used
21. manent damage to the transceiver if left there for ex tended periods AVOID placing the transceiver in excessively dusty en vironments or in direct sunlight AVOID placing the transceiver against walls or putting anything on top of the transceiver This will obstruct heat dissipation Versions of the IC 756PRO which display the CE symbol on the serial number seal comply with the European harmonised standard ETS300 684 EMC product standard for Commercially Available Amateur Radio Equipment Place unit in a secure place to avoid inadvertent use by chil dren During mobile operation DO NOT operate the trans ceiver without running the vehicle s engine When transceiver 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 start ing the vehicle This will avoid possible damage to the transceiver by ignition voltage spikes During maritime mobile operation keep the transceiver and microphone as far away as possible from the mag netic navigation compass to prevent erroneous indica tions BE CAREFUL The heatsink will become hot when operating the transceiver continuously for long periods BE CAREFUL If a linear amplifier is connected set the transceivers RF output power to less than the lin ear amplifiers maximum input level otherwise the lin ear amplifier will be damaged Use Icom microphones only supplie
22. 10 or 30 sec See the previous page for keyer set mode e To count down the contact number push F 5 1 Push EXIT to exit memory keyer screen e Setting the contact serial number Contact number can be automatically transmitted from one of the memory keyer channels The Morse cut numbers can be used as the contact numbers The maximum number for contact numbers is 9999 Push CW RTTY to select CW mode Push KEYER to select keyer set mode Push F 3 001 to enter contact number screen AGC FE EE MID Number Style Normal Count UP Trigger Mi BK IH Present Number g 1 OFF 144 OFF La T F LE 4 Rotate the tuning dial to select the cut number type if desired does not use Morse cut numbers sets 1 as 9 as N and as O sets 1 as 9 as N and as T sets 9 as N and as O 1 sets 9 as N and as T Push F 2 to select the Count Up Trigger item KEYER 661 Number Style Normal Count UP Trigger Mi Present Number gai 6 Rotate the tuning dial to select the desired mem ory channel for contest numbers Push F 2 to select the Present Number item AGC EVER 66 MID Number Style Normal i Mi Count UP Trigger EK IN Present Number gai OFF 144 OFF ah ia Be1CLR Push F 3 001CLR for 2 sec to cle
23. 35 36 5 RECEIVE AND TRANSMIT E Meter function The transceiver has 4 transmit meter functions for your convenience Select the desired meter with the METER switch e Analog transmit meter Push METER to select RF power Po SWR ALC or compression level COMP for transmit metering METER switch In addition the transceiver can display the multi func tion digital meter in the LCD display which displays all transmit meters simultaneously e Multi function digital meter Push METER for 2 sec to turn the multi function digital meter ON or OFF 2 Push F 1 P HOLD to toggle the peak level hold function ON or OFF P HOLD appears on the window title when the peak level hold function is turned ON ANT N 4 Ga N D VFO FILZ e 14 195 oo i4 166 GE 1 P AMP 1 UFO USB FILZ OFF 0 55 0 0 DISPESN MEASUREMENT ae oe INDICATION AGC P4 a ee METER 3 MID n s CORRE 20 40 4600 P Indicates the relative RF output power in 2 ME niiin o uox PO eRe R TT 100 2 OFF ALC SWR Indicates the SWR over the transmission oe pei REDOUTE line P HOLD Indicates the ALC level When the meter movement shows the input signal level ALC exceeds the allowable level the ALC limits the RF power In such cases reduce the MIC GAIN control COMP Indicates the compression leve
24. 50 MHz and turn ON the quick split function in set mode others in advance pgs 68 69 2 Push VFO MEMO to select VFO mode 12 00 ez i Gi EN CED UFO FILZ 2 1290 00 i4 106 06 USE UFO USB FILE IU 20 5 00 1 14 188 06 USE 3 Push the desired band key Push AM FM one or more times to select FM mode 5 Set the receive frequency repeater output fre quency EN _15 Ga LN 12 00 D WFO FILE 9368000 i4 166 06 USE UFO USB FILZ JU 2OS O0 1 i4 160 06 USE 6 Push SPLIT for 2 sec to start repeater operation Repeater tone is turned ON automatically e Shifted transmit frequency and TX appear in the sub readout e The transmit frequency can be monitored while push ing XFC or using dualwatch GQ is EM ZA 12 00 UFO FILE TONE 29 68000 14 168 68 USE SPL 5 SPLIT D VFO FM eS 5S80 0N 1 106 BG USB FIL TOHE Tone encoder is auto matically turned ON Shifted frequency appears Push and hold PTT to transmit release PTT to receive To return to simplex push SPLIT momentarily to clear the sub display e Setting the repeater tone Some repeaters require subaudible tones to be ac cessed Subaudible tones are superimposed over your normal signal and must be set in advance The transceiver has 50 tones from 67 0 Hz to 254 1 Hz Each memory ch
25. 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 CONVENIENT Store tone squelch frequencies and ON OFF settings in memory channels for easy recall 47 48 5 RECEIVE AND TRANSMIT E Antenna tuner operation The internal automatic antenna tuner matches the transceiver to the connected antenna automatically Once the tuner matches an antenna the variable ca pacitor angles are memorized as a preset point for each frequency range 100 kHz steps Therefore when you change the frequency range the variable ca pacitors are automatically preset to the memorized point CAUTION NEVER transmit with the tuner ON when no antenna is connected This will damage the Z transceiver Be careful of the antenna selection WAY TUNER OPERATION Push the TUNER switch to turn the internal an tenna tuner ON The antenna is tuned automatically when the antenna SWR is higher than 1 5 1 When the tuner is ON the TUNER switch lights TUNER switch 0000000 MANUAL TUNING During SSB operation at low voice levels the internal tuner may not be tuned correctly In such cases man ual tuning is helpful Push TUNER for 2 sec to start manual tuning A side tone is emitted and TUNER blinks while tuning lf the tuner cannot reduce the SWR to less than 1 5 1 after 20 sec of tunin
26. F 1 R1 F 4 R4 again to stop recording Recording is automatically terminated after 15 sec Push EXIT twice to exit voice memory screen Uos OFF R4 Q Th m ince GB memory Ri Re RS R4 TR Push the selected memory channel F 1 R1 F 4 R4 again to stop playback if desired Push EXIT twice to exit voice memory screen 38 E Digital voice recorder continued RECEIVE AND TRANSMIT 9 e Recording a message for transmit To transmit a message using a voice recorder record the desired message in advance as described below Push EXIT one or more times to close a multi function screen if necessary Select a phone mode by pushing SSB or AM FM 3 Push F 2 VOICE to call up the voice recorder screen MOLLE RELL VOICE RECORDER MENU PLAY TX 15sec x 4ch RX 15sec x 4ch MIC REC Mic Record Record check TX LEV Recorder Output Adjust LAMP OFF i WIDE SET Auto Monitor SET PLAY MIC REC TH LEW SET 4 Push F 2 MIC REC to select the voice memory recording screen VOICE MIC RECORD Ti T2 T3 T4 OFF B 50 108 WIDE MIC REC LEVEL WMG Tz TD 5 Push the desired memory channel F 1 T1 F 4 T4 for 2 sec to start recording e Speak into the microphone without pushing th
27. Hz steps 10 Hz steps when can celling the 1 Hz step readout without moving the re ceive frequency See on p 6 for function description Push the ATX switch mi i Gi LA TD UFO FIL2 14 195 00 14 166 08 ATX appears Rotate the RIT ATX control RIT ATX Low shitt High shift To reset the ATX frequency push CLEAR for 2 sec Reset to 000 Rese To cancel the ATX function push ATX again disappears Z When RIT and ATX are ON at the same time the RIT ATX control shifts both the Gt transmit and receive frequencies from the displayed frequency at the same time e Calculate function The shift frequency of the RIT or ATX function can be added subtracted to the displayed frequency While displaying the RIT and or ATX shift frequency push RIT or ATX for 2 sec ENS Gi 6 A CED UFO FIL2 a Pre 14 180 88 RIT Push and hold Co cnz 4 Gi 4 EN TD UFO FILZ 14 160 06 e Practical example When you find a DX station on 21 025 MHz CW and the station is picking up stations transmitting slightly up from 21 025 MHZ Push RIT and ATX to turn both the RIT and ATX functions ON 2 Rotate RIT ATX to find the DX station s receive frequency 3 When you find the DX station s receive frequency push RIT to turn the RIT function OFF Now you can transmit the DX station s receive fre quency
28. antenna See p 45 for details When Manual is selected the antenna switch is ac tivated and selects an antenna manually When OFF is selected the antenna switch is not ac tivated and does not function The ANT1 connector is always selected in this case Auto Antenna switch is activated and the selection is automatically memorized default Manual Antenna switch is activated OFF Antenna switch is deactivated and ANT 1 is always selected This item selects the RTTY mark frequency RTTY See p 41 for details 2125 1275 mark frequency is toggled between 1275 1615 and 2125 Hz RTTY mark 1275 Hz RTTY mark 2125 Hz frequency default frequency This item adjusts the RTTY shift width There are 3 178 25 selectable values 170 200 and 425 Hz 170 Hz RTTY shift 425 Hz RTTY shift frequency default frequency This item selects the RTTY keying polarity Normal or HOEMAL ELIERSE reverse keying polarity can be selected Normal polarity default Reverse polarity When reverse polarity is selected Mark and Space are reversed Normal Key open close Mark Space Reverse Key open close Space Mark This item selects the USOS UnShift On Space func OH OFF tion of the internal RTTY decoder Decode as letter code Decode as character code default E Miscellaneous others set mode continued SET MODE 9 This item selects the new line code of the i
29. cir cuit is selected for the main readout frequency D Set a desired frequency 2 Push DUALWATCH for 2 sec Equalized receive frequency and appear in the LCD This quick dualwatch function can be turned OFF in set mode p 68 Pushing DUALWATCH momentarily activates the du alwatch with the previously operated frequency 12 00 EN Gi o PA CGD VFO WME FIL2 gt 1290 00 4 168 05 USE 56 USB FILZ 2 l eS 0 UFO 14 106 06 3 Set another desired frequency using the tuning dial 4 Adjust BAL to set a suitable signal strength bal ance between the main and sub readout frequen cies e S meter shows the combined signal strength To transmit on the sub readout frequency push CHANGE or SPLIT RIT function can be used for the main readout only ATX function can be used for the transmit readout main readout when the split function is OFF sub readout when the split function is ON ANNL e Scanning during dualwatch Scanning operates only for the main readout To op erate the scan during dualwatch scan on the main readout and use the sub readout for your QSO using both dualwatch and split frequency operation Program the desired programmed scan edges in the same amateur band See p 52 for program ming lf you plan to operate a AF scan programming the scan edges may not be necessary 2 Push SPLIT to turn the split frequency function ON E
30. desired memory channel F 1 T1 F 4 T4 momentarily to transmit the contents Rotate the tuning dial to adjust the transmit voice level Push F 5 DEF to select the default condition VOICE RECORDER SEHD ca JASYUA T2 COMP OFF WIDE Push EXIT to return to the voice recorder screen 40 E RTTY decoder RECEIVE AND TRANSMIT 9 The transceiver has an RTTY decoder for Baudot mark freq 2125 Hz shift freq 170 Hz 45 bps An external terminal unit TU or terminal node con troller TNC is not necessary for receiving a Baudot signal Push EXIT one or more times to close a multi function screen if necessary 2 Push CW RTTY once or twice to select RTTY mode 3 Push F 2 DECODE to turn the RTTY decoder ON RTTY decoder screen appears AGC MID z OH 1 4 OFF THRESHOLD mmm 9 HOLE TLR ADJ WIDE If the RTTY filter is turned OFF push RTTY FIL to turn the function ON e The RTTY decoder does not function when the RTTY filter is turned OFF Push F 1 HOLD to freeze the current screen HOLD appears while the function is in use Push F 5 WIDE to toggle the normal or wide screen space PAT ms em a A 1b 12 00 C Apuro 1419500 RTTY FIL METER 14 100 00 Po RTTY DECODE CA CQ Ca THIS IS JASYUA JASYUA OSAKA JAP
31. for both HF and 50 MHz operation Use a coaxial antenna Long wire or optional AH 2b switch when you operate the 50 MHz band with the AH 3 connected RV Coaxial cable from the AH 4 or AH 3 ai Uo 000000 000 ma N AG 6 Control cable AH 4 or AH 3 Transceiver Ground CONNECTING THE IC AT500 THROUGH THE IC 2KL ACC cable ww supplied with the IC 2KL Coaxial cable Pe supplied with the IC 2KL To an antenna Coaxial cable supplied with gt the IC AT500 _ ACC cable wa A supplied with the Ry x I O O EE g rey ie IC 2KL Qi CT 59900 000 men o0 oora 0O IC AT500 To the IC 2KLPS B ACC 1 ACC 2 Ground l OPC 118 sold separately 20 INSTALLATION AND CONNECTIONS 3 E FSK and AFSK SSTV connections To connect a terminal unit TNC or scan converter refer to the diagram below 7 For RTTY operation Narrow filter settings may not pass RTTY signals Be sure to select the appropriate IF filter settings corresponding to the signal width p 29 MMS FSK RTTY connection Use RTTY mode for Terminal unit TU or operation Terminal Node Controller TNC AF input Ground GND PTT SQUELCH input RTTY keying AC
32. frequencies while in dualwatch BAL NR Increases main Increases sub readout gain X readout gain NOISE REDUCTION LEVEL CONTROL NR outer control p 27 Adjusts the noise reduction level when the noise re duction is in use Set for maximum readability BAL NR Decreases fe 02 Increases OFF NOISE REDUCTION SWITCH NR p 27 Toggles the noise reduction ON and OFF NR NR _ Noise reduction OFF a Noise reduction ON NOISE BLANKER SWITCH NB p 27 Toggles the noise blanker ON and OFF The noise blanker reduces pulse type noise such as that gen erated by automobile ignition systems This function cannot be used for FM or non pulse type noise NB NB Noise blanker OFF x Noise blanker ON S RF METER p 36 Shows the signal strength while receiving Shows the relative output power SWR ALC or compres sion levels while transmitting MONITOR SWITCH MONITOR p 35 Monitors your transmitted IF signal e The CW sidetone functions when MONITOR is OFF in CW mode ANTENNA TUNER SWITCH TUNER p 48 Turns the antenna tuner ON and OFF bypass when pushed momentarily Starts to tune the antenna manually when pushed for 2 sec When the tuner cannot tune the antenna the tuning circuit is bypassed automatically after 20 sec 2 PANEL DESCRIPTION E Front panel continued gt TWIN PBT
33. has malfunctioned e Reset the CPU p 22 E Fuse replacement If a fuse blows or the transceiver stops functioning try to find the source of the problem and replace the dam aged fuse with a new rated fuse CAUTION DISCONNECT the DC power cable from the transceiver when changing a fuse WS The IC 756PRO has 2 types of fuses installed for transceiver protection e DC power cable fuses FGB 30 A e Circuitry fuse 22 eeeeceeeeeeeeeeeeeeeeeeeeeaeeeteneees FGB5A DC POWER CABLE FUSE REPLACEMENT CIRCUITRY FUSE REPLACEMENT The 13 8 V DC from the DC power cable is applied to all units in the IC 756PRO except for the power am plifier through the circuitry fuse This fuse is installed in the PA unit D Remove the top cover as shown on p 73 2 Remove 11 screws from the PA shielding plate then remove the plate Replace the circuitry fuse as shown in the diagram below 4 Replace the PA shielding plate and top cover Circuitry fuse FGB 5 A E Clock backup battery replacement The transceiver has a lithium backup battery CR2032 inside for clock and timer functions The usual life of the backup battery is approximately 2 years When the backup battery is exhausted the trans ceiver transmits and receives normally but cannot re tain the current time See p 77 for battery location CR2032 75 76 11 MAIN
34. is changed the VFO au tomatically memorizes the new frequency or new op erating mode When a VFO is selected from another band or mem ory mode the frequency and operating mode last used for that VFO appear EXAMPLE VFO is selected The frequency is changed aM dik EM JA DUFO FIL 1q 123 00 21 476 56 EN 565 Emi N 12 00 1 FILZ 2107650 UFO i4 123 06 USB EM Ga IN 12 00 DUFO FILZ 1q 12300 876 SE Chi Changed frequency 14 123 MHz appears MEMORY MODE pgs 50 54 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 the 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 12 00 1 FILE 14 10000 UFO 14 168 06 USB l Eik Gm EX D The frequency is changed mk Ga 6 12 00 1 WEEB Fi 12300 WFO 14 164 06 USE mkm a 12 00 QS 12 QQEEW FIL 2 1245 00 WFO 14 188 06 USB Memory channel 1 is selected again 12 00 Eik Gi 4 LN 1 WEEB Fiz 14 100 00 UFO i4 106 06 USE Changed frequency 14 123 MHz does not appear and memorized frequency 14 100 MHz appears instead 23 4 FREQUENCY SETTING E Frequency se
35. keypad Push VFO MEMO to select memory mode Push F INP 3 Push the desired memory channel number using the keypad Enter 100 or 101 to select scan edge channel P1 or P2 respectively 4 Push A or V to select the desired memory channel Enk Ga EN 12 00 1 FILE 100 00 UFO i4 195 68 Cul E then 2 4 Ga D 1 WE Fiz 14 195 08 O a FT PA 2 UER F1 Du 960 00 WFO Cl E Memory channel screen MEMORY OPERATION 6 The memory channel screen simultaneously shows 7 memory channels and their programmed contents 13 memory channels can be displayed in the wide mem ory channel screen You can select a desired memory channel from the memory channel screen e Selecting a memory channel using the memory channel screen Push EXIT one or more times to close a multi function screen if necessary 2 Push F 3 MEMORY to select the memory chan nel screen F 5 WIDE toggles the standard and wide screens FT gm2 Ga _ 12 00 CD VFO FIL2 J 14 1935 00 1d 188 08 USE IF AMP aa UFO USE FILZ AIT IU 20S5S 00 1 14 100 600 USB 7 OR 99 Pi 0 500 090 LSB FL2 SCAN EDGE P2 29 999 99 USB _FL2 SCAN EDGE HE 14 100 00 USB FL2 2 cece ae 3 4 ROLL SET SELECT HAME WIDE 3 Rotate the tuning
36. one or more times to select FM mode Push TONE one or more times until TSQL ap pears in the function display EM isk Gao _ 12 00 D VFO FILZ TSOL 29 680 00 14 100 06 USB UFO FM FILE Ss SisiQ 1 14 188 06 When the received signal includes a matching tone squelch opens and the signal can be heard When the received signal s tone does not match tone squelch does not open however the S indicator shows signal strength e To open the squelch manually push XFC Operate the transceiver in the normal way To cancel the tone squelch push TONE to clear TSQL e Setting the tone squelch tone The transceiver has 50 tones from 67 0 Hz to 254 1 Hz Select FM mode 2 Push TONE for 2 sec to enter tone set mode 3 Push F 2 to select the tone squelch tone item Rotate the tuning dial to select the desired tone squelch frequency AGC TOHE FREQUENCY GC FAST REPEATER TOME 88 5Hz T 50L TONE 85 5Hz Wo OFF TONE kd DEF T SCAH 5 Push EXIT to exit tone set mode Available tone squelch tones 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
37. operation gt Push F INP 5 then SPLIT e The split function is turned ON and 5 kHz down fre quency is entered in the sub readout PRACTICAL EXAMPLE When you receive a pile up and you want to start split frequency operation to simplify picking out sta tions Push SPLIT momentarily and push CHANGE for 2 sec e The sub readout frequency is equalized to the main readout frequency and appears Rotate the tuning dial to set your receive fre quency in the main readout Announce your receive frequency 4 After you catch one of the calling stations call signs push and hold the PTT switch to respond e While pushing XFC you can monitor your transmit frequency 33 D RECEIVE AND TRANSMIT E RIT and ATX e RIT function The RIT function shifts the receive frequency up to 9 999 kHz in 1 Hz steps 10 Hz steps when can celling the 1 Hz step readout without moving the transmit frequency See on p 6 for function description Push the RIT switch RIT appears 2 Rotate the RIT ATX control RIT ATX Low shift i High shift 3 To reset the RIT frequency push CLEAR for 2 sec mi 4 Gi A TD VFO EIEH FIL2 A GA l 14 100 09 Reset to 0 00 To cancel the RIT function push RIT again e disappears SS e ATX function The ATX function shifts the transmit frequency up to 9 999 kHz in 1
38. 13 uV 0 5 1 799 MHz 2 uV 1 80 29 99 MHz 1 UV 50 0 54 0 MHz 0 5 uV 28 0 29 99 MHz 0 32 uV 50 0 54 0 MHz Pre amp 1 is ON Pre amp 2 is ON e Squelch sensitivity Pre amp OFF FM 12 dB SINAD SSB CW RTTY Less than 5 6 UV FM Less than 1 uV e Selectivity SSB RTTY More than 2 4 kHz 6 dB BW 2 4 kHz Less than 2 8 KHz 60 dB CW BW 500 Hz More than 500 Hz 6 dB Less than 700 Hz 60 dB More than 6 0 Hz 6 dB Less than 15 0 Hz 60 dB More than 12 0 Hz 6 dB Less than 20 0 Hz 60 dB More than 70 dB except IF through on 50 MHz band More than 2 0 W at 10 distortion with an 8 Q load AM BW 6 kHz FM BW 15 kHz e Spurious and image rejection ratio AF output power at 13 8 V DC e RIT variable range 9 999 kHz PHONES connector 3 conductor 6 35 d mm 4 External SP connector 2 conductor 3 5 d mm Ye 8Q e Antenna tuner 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 e Minimum operating 8W input power e Tuning accuracy e Insertion loss after tuning VSWR 1 5 1 or less Less than 1 0 dB All stated specifications are typical and subject to change without notice or obligation OPTIONS 1 5 IC PW1 HF 50 MHz ALL BAND 1 kW LINEAR AMPLIFIER Full duty 1 kW linear amplifier including an automatic antenna tuner Has automatic tuning and band selection c
39. 14 F to 122 F Less than 0 5 ppm 1 min after power on 10 to 50 C 14 to 122 F Frequency resolution 1 Hz e Power supply 13 8 V DC 15 e Power consumption e Temperature range e Frequency stability Transmit Max power 23 A Receive Standby 3 0 A typ Max audio 3 5 A typ e Dimensions 340 W x 111 H x285 D mm projections not included 13 W x4 H x 1172 D in e Weight approx 9 6 kg 21 Ib 3 oz e ACC 1 connector 8 pin DIN connector e ACC 2 connector 7 pin DIN connector CI V connector 2 conductor 3 5 d mm 1 e Display 5 inch diagonal TFT color LCD e Transmitter e Output power continuously adjustable SSB CW RTTY FM 5 100 W AM 5 40 W e Modulation system SSB PSN modulation AM Low power modulation FM Phase modulation e Spurious emission 50 dB HF bands 60 dB 50 MHz band e Carrier suppression 40 dB Unwanted sideband 55 dB suppression e ATX variable range 9 999 kHz Microphone connector 8 pin connector 600 Q ELEC KEY connector 3 conductor 6 35 d mm 1 e KEY connector 3 conductor 6 35 d mm 1 4 e SEND connector Phono RCA e ALC connector Phono RCA e Receiver e Receive system Triple conversion superheterodyne system Intermediate frequencies 1st 64 455 MHz 2nd 455 kHz 3rd 36 kHz e Sensitivity typical SSB CW RTTY 0 16 uV 1 80 29 99 MHz 10 dB S N AM 10 dB S N 0 13 UV 50 0 54 0 MHz
40. 2 148500 Frequency and mode before pushing MP R 55 56 7 SCANS E Scan types gt e The scan function can be used on the main readout only e You can operate a scan while operating on a frequency using the dualwatch or split functions See p 31 for details PROGRAMMED SCAN Repeatedly scans between two scan edge frequencies scan edge memory channels P1 and P2 Scan edge P1 or P2 Scan edge P2 or P1 fa an TR me he wet he e a ST This scan operates in VFO mode AF SCAN Repeatedly scans within AF span area Start frequency AF frequency H Cl Lite AF frequency This scan operates in both VFO and memory modes MEMORY SCAN Repeatedly scans all programmed memory channels Blank channel select Men 1 amp select select select This scan operates in memory mode SELECT MEMORY SCAN Repeatedly scans all select memory channels select amp select select Blank channel This scan operates in memory mode E Preparation e Channels For programmed scan Program scan edge frequencies into scan edge mem ory channels P1 and P2 For AF scan Set the AF span AF scan range in the scan screen For memory scan Program 2 or more memory channels except scan edge memory channels For select memory scan Designate 2 or more memory channels as select mem ory channels To designate the ch
41. 2 to 13 8 V 7 13 8 V Same as ACC 1 pin 7 WMA If the CW side tone level limit or beep level limit is in use the CW side tone or beep tone decreases from the fixed level when the AF control is rotated above a specified level respectively p 65 14 3 INSTALLATION AND CONNECTIONS 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 756PRO see Supplied ac cessories on p 1 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 electro magnetic 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 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 results 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 Z A WARNING NEVER connect the GND Y g terminal to a gas or electric pipe since the connec Y tion could cau
42. 3 74 1 MAINTENANCE E Troubleshooting The following chart is designed to help you correct problems which are not equipment malfunctions 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 PROBLEM POSSIBLE CAUSE SOLUTION REF x Power does not come on DC power cable is improperly connected e Reconnect the DC power cable correctly p 17 W when the POWER switch e Fuse is blown e Check for the cause then replace the fuse with p 75 3 is pushed a spare one Fuses are installed in the DC power cable and the internal PA unit No sound comes from the Volume level is too low Rotate AF clockwise to obtain a suitable p 2 speaker listening level e The squelch is closed Rotate RF SQL to 10 o clock position to open p 3 the squelch e The transceiver is in the transmitting condition Push TRANSMIT to receive or check the p 2 SEND line of an external unit if desired Sensitivity is low e The antenna is not connected properly Reconnect to the antenna connector e The antenna for another band is selected Select an antenna suitable for the operating pgs 5 frequency 45 u e The antenna is not properly tuned Push TUNER for 2 sec to manually tune the p 48 il antenna O e The attenuator is activated Push ATT one or more times to select
43. 75 E Tuning dial brake adjustment 76 E Frequency calibration approximate 76 12 INTERNAL VIEWS osisaessesse 77 13 CONTROL COMMAND 78 79 E Remote jack CI V information 78 14 SPECIFICATIONS eeeee 80 15 OPTIONS is 81 2 PANEL DESCRIPTION E Front panel TIMER HF 50MHz TI ANSCH iVER z or TRANSMIT com IC S6PRC p x m n TUNER AONITOR NB NR oe oe m m m O 7 m lt AF RF SQL BAL NR 5 ic Cr CE F Cr CES 60 POWER SWITCH POWER TIMER Push momentarily to turn power ON e Turn the optional DC power supply ON in advance e A D convertor calibration of the DSP unit starts and it takes 10 sec Push momentarily to toggle the timer function ON and OFF p 63 e The power switch lights while the timer function is ON Push for 2 sec to turn power OFF TRANSMIT SWITCH TRANSMIT Selects transmitting or receiving e The TX indicator lights red while transmitting and the RX indicator lights green when the squelch is open HEADPHONE JACK PHONES Accepts headphones Output power 5 mW with an 8 Q load When headphones are connected the internal speaker or connected external speaker does not function
44. 8 In this case the SPLIT switch does not equalize the main and sub readout frequencies Suppose you are operating at 21 290 MHz USB in VFO mode 12 00 mik Gi 3 D VFO WE FIL2 2 1290 00 14 188 06 USE UFO USE FILZ IU 2OoSs 00 1 14 188 06 USE Push SPLIT for 2 sec e Split frequency operation is turned ON e The sub readout is equalized to the main readout fre quency e The sub readout enters standby for transmit frequency input GN2 4 Ga A F inp UFO EBF GED 2 1 220 000 14 188 68 USE CD VFO USB FIL 2 1290 00 1 14 188 68 USE 3 Rotate the tuning dial to set the transmit frequency or input the transmit frequency using the keypad and ENT or input a shift frequency using the keypad and SPLIT e The transmit frequency can be monitored while push ing XFC or using dualwatch ENZ ik Ga FN 12 00 UFO FIL2 2 L S 1 14 168 68 USB SPLIT CUD UFO USB FILZ 2131000 1 14 188 06 USE PRACTICAL EXAMPLE When you are searching for DX stations and you suspect that a DX station may say up X kHz for their receive frequency OPERATION 1 Push SPLIT for 2 sec to standby for split opera tion If the DX station says up 10 kHz Push 1 0 then SPLIT Or rotate the tuning dial OPERATION 2 If the DX station says down 5 kHz before you enter standby for split
45. AN AGC CA CG CA THIS IS JASYUA JASYUA OSAKA JAPAN MID CA CG Ca THIS IS JASYUA JASYUA OSAKA JAPAN WIDE THRESHOLD k mi 1 9 HOLD CLR _ ADJ WIDE _ Push F 2 CLR for 2 sec to clear the displayed characters Push EXIT to exit the RTTY decoder screen e Setting the decoder threshold level Adjust the RTTY decoder threshold level if some characters are displayed when no signal is received Call up the RTTY decoder screen as described at left 2 Push F 4 ADJ to select the threshold level set ting condition Rotate the tuning dial to adjust the RTTY decoder threshold level Push F 3 DEF to select the default condition RTTY DECODE kkk RTTY Decode Monitor kk RTTY FIL OH 4 Push EXIT to return to the RTTY decoder screen N The UnShift On Space USOS function and new 7 line code can be set in the miscellaneous others A set mode pgs 70 71 NN E RTTY tuning meter The transceiver has an RTTY tuning indicator to be tuned correctly and easily The RTTY tuning meter is automatically displayed when the RTTY filter is turned ON Push CW RTTY once or twice to select RTTY mode 2 Push RTTY FIL to activate the RTTY filter and RTTY tuning meter RTTY tuning meter ENS Gas _ 1b 12 00 D VFO GED FIL2 14 195 00 14 180 68 USE UFO USB FILE
46. C SCAN SET MID SCAN Speed HIGH SCAN Resume ON WOH OFF LUI OFF WIDE F DEF Rotate the tuning dial to select the scan speed Push F 3 DEF to select the default condition 6 Push EXIT twice to exit the set mode e Scan resume condition This item sets the scan resume function ON or OFF ON scan resumes 10 sec after stopping on a signal or 2 sec after a signal disappears OFF scan does not resume after stopping on a signal Push EXIT one or more times to close a multi function screen if necessary 2 Push F 4 SCAN to select the scan screen Push F 5 SET to select the scan set mode screen 4 Push F 2 W to select the scan resume condition item AGC MID SCAN SPeed HIGH SCAN Resume ON CO WIDE A J DEF 5 Rotate the tuning dial to turn the scan resume function ON or OFF Push F 3 DEF to select the default condition Push EXIT twice to exit the set mode E Tone scan SCANS The transceiver can detect the subaudible tone fre quency in a received signal By monitoring a signal that is being transmitted on a repeater input fre quency you can determine the tone frequency re quired to access the repeater Set the desired frequency or memory channel to be checked for a tone frequency 2 Push AM FM one or more times to select FM mode 3 Pu
47. C 1 socket Rear panel view Connect the SQUELCH line when required AFSK and SSTV connections Terminal Node Controller TNC or Scan converter Use SSB or FM mode for operation AFSK output Ground GND AF input Ground GND PTT SQUELCH input ACC 1 socket Rear panel view Connect the SQUELCH line when required AFSK and SSTV connections via microphone connector Terminal Node Controller TNC Use SSB or FM mode or Scan converter for operation AFSK output AF input Ground GND PTT SQUELCH input MIC connector Connect the SQUELCH line when required Front panel view GY When connected to the MIC connector MIC Y GAIN and AF control adjustment is required NS 21 22 4 Before first applying power make sure all connections required for your system are complete by referring to Chapter 3 Then reset the transceiver using the fol lowing procedure 7 Resetting CLEARS all programmed contents in Z g memory channels and returns programmed values in set mode to default values Make sure the transceiver power is OFF While pushing M CL and F INP push POWER for 2 sec to turn power ON e The internal CPU is reset A D convertor calibration of the DSP unit starts and it takes 10 sec e The transceiver displays its initial VFO frequencies when resetting is complete 3 Correct the set mode settin
48. C time constant D Select the desired mode except FM mode Push AGC for 2 sec to enter AGC set mode ARE E2 Ga A 12 00 UD UFO FILZ 14 195 00 i4 166 06 USE i UFO USB FIL2 1205 00 USE 1 14 150 06 3 Push AGC one or more times to select FAST time constant 4 Rotate the tuning dial to set the desired time con stant for AGC FAST AGC time constant can be set between 0 1 to 8 0 sec depends on mode or turned OFF Push F 3 DEF to select a default value 5 Push AGC to select medium time constant Rotate the tuning dial to set the desired time con stant for AGC MID AGC time constant can be set between 0 1 to 8 0 sec depends on mode or turned OFF Push F 3 DEF to select a default value Push AGC to select slow time constant Rotate the tuning dial to set the desired time con stant for AGC SLOW AGC time constant can be set between 0 1 to 8 0 sec depends on mode or turned OFF Push F 3 DEF to select a default value 9 Select another mode except FM Repeat steps to if desired Push EXIT to exit the AGC set mode screen E Dualwatch operation RECEIVE AND TRANSMIT 9 Dualwatch monitors 2 frequencies with the same mode simultaneously During dualwatch both frequencies should be on the same band because the bandpass filter in the RF
49. D function switches F 1 F 5 MULTI FUNCTION SCREEN p 11 Shows the screens for the multi function digital meter spectrum scope voice recorder memory channel scan memory keyer RTTY decoder IF fil ter selection or set modes etc MEMORY CHANNEL READOUTS p 50 Show the selected memory channel contents in VFO mode Show the VFO contents in memory mode FREQUENCY READOUTS p 24 Show the operating frequency e Outline characters are used for non accessing readout CLOCK READOUT p 62 Shows the current time RTTY TUNING INDICATOR p 41 Shows the tuning level in RTTY mode QUICK TUNING INDICATOR p 25 Appears when the quick tuning step function is in use PASSBAND WIDTH INDICATOR p 26 Graphically displays the passband width for twin PBT operation and center frequency for IF shift op eration IF FILTER INDICATOR p 29 Shows the selected IF filter number SHIFT FREQUENCY INDICATOR p 26 Shows the shift frequency of the IF filter MODE INDICATOR p 26 Shows the selected mode BAND WIDTH INDICATOR p 29 Shows the passband width of the IF filter E Screen menu arrangement The following screens can be selected from the start up screen Choose the desired screen using the fol lowing chart eStart up screen PANEL DESCRIPTION 2 Pushing EXIT one or more times returns to the start up screen See p 64 for set mode arrangement Spectrum sco
50. E appears Enz 4k Gi IN 12 00 UFO FILE 2 1290 00 Bii 166 88 USE D UFO ase FILZ Id2os 00 1 14 188 06 USB 3 Select VFO mode for the main readout Set the desired operating frequency for the main readout 5 Push DUALWATCH for 2 sec The main and sub readout frequencies are equalized and the dualwatch function is turned ON 12 00 Ez ik Ga ZA UFO FIL2 2 1290 00 musee L e 0 0 0 1 14 188 68 USE Push F 4 SCAN to select the scan screen Push EXIT one or more times to close a multi function screen if necessary Push F 1 PROG or F 2 AF to start the pro grammed scan or AF scan respectively e Scan activates on the main readout between the pro grammed scan edges or within the AF span e Transmitting on the sub readout stops the scan Ei Ga 4 12 00 L _ UFO FILE gt 125000 14 190 8 USE V CD WFO USB FIL2 2 U2 So oo 1 14 188 68 USE e PROGRAM SCAN I AF SPan Programmed P1 scan edges P2 To cancel the scan push EXIT 31 32 5 RECEIVE AND TRANSMIT E Split frequency operation Split frequency operation allows you to transmit and receive in the same mode on two different frequen cies The split frequency operation is basically per formed using 2 frequencies on the main and sub readouts Following is an examp
51. European version 230 V Z Turn OFF the transceiver s antenna tuner while tuning the IC PW1 s tuner CONNECTING THE IC 4KL Coaxial cable supplied with the IC 4KL To an antenna ACC cable supplied with the IC 4KL 2000000 ACC oo o O000000 oL Jo IC 4KL Remote controller o o 0 oC Je QI Ea ll 000000 000 QOO OO Transceiver supplied with the IC 4KL C E AC outlet 220 240 V Z Turn OFF the transceiver s antenna tuner while tuning the IC 4KLs tuner INSTALLATION AND CONNECTIONS 3 CONNECTING THE IC 2KL CAUTION Set the transceiver output power for 80 W max with the RF POWER control other wise a protection circuit will activate QWOQAAW Z ACC cable supplied with the IC 2KL o i Coaxial cable supplied with the IC 2KL To an antenna Transceiver QUO T 000000 000 s 29 qe o0 7 ja Io IC 2KL To the IC 2KLPS ret Ground OPC 118 sold separately CONNECTING A NON ICOM LINEAR AMPLIFIER WARNING Set the transceiver output power and linear amplifier ALC output level referring to the linear amplifier instruction manual The ALC input level must be in the range 0 V to 4 V and the trans lt o o 2 2 D lt Gg S D ZS o
52. ILZ 14 195 00 i4 100 68 UFO USB FILE 1205 00 1 14 160 06 USE TIME SET Power ON Timer Set Power OFF Period Set the current time using the tuning dial TIME set push SET blinks AT amza en 6 LA 12 00 LC D UFO GRE FIL jane 14 195 00 1 14 186 68 USE FP AMP 1 UFO USB FILZ ATT 14 20500 Di 1 i4 1606 06 USE Sd Le 52 eO O O Power ON Timer Set TANT AGC HID ugs Power 0FF Period 68min OFF ET TRE Z TIME set Push SET Z OFF TE 1 Sa ak kd SET 5 Push F 4 SET to enter the set time Push EXIT to cancel the setting Set time appears a k Gao __ 15 24 CD WFO GSE FIL2 J 14 1935 00 E 14 198 08 USB P pme 1 WFO USE FIL2 art IU2o0Ss 00 ore 1 14 100 08 USB ZD En cy yox OFF Time Now 15 24 Power ON Timer Set 0 00 Power 0FF Period 68min OFF WIDE laa Push EXIT twice to exit timer set mode E Setting power on time The transceiver can be set to turn ON automatically at a specified time Push EXIT one or more times to close a multi function screen if necessary 2 Push F 5 SET then F 3 TIME to enter timer set mode 3 Push F 1 4 or F 2 W to selec
53. INE _ AF SPAN SET Set RF SQL open or closed e See previous page for scan condition lf the RF SQL control function is set as AUTO the squelch is always open in SSB CW and RTTY modes See pgs 3 68 for details Set the AF span by pushing F 4 4F SPAN 5 kHz 10 kHz 20 kHz 50 kHz 100 kHz 500 kHz and 1000 kHz are selectable Set center frequency of the AF span Push F 2 AF to start the AF scan e Decimal points blink while scanning ART G2 4 Ga A 12 00 CUD UFO WE Fi METER 10 19290 1 4188 08 USE PAP 1 WFO USB FILE ATT IUt 205 00 Er i4 100 00 USE AGC MID mos eS 4F SCAN ee AF Center 14 195 OMHz dF SPan 18kHz QE Programmed P1t 500 OMHz WIDE scan ed9es P2 29 999 99MHz PROG dE FINE AE SFA SET When the scan detects a signal the scan stops pauses or ignores it depending on the resume set ting and the squelch condition To cancel the scan push F 2 AF 57 7 SCANS E Fine programmed scan fine AF scan Fine scan functions as programmed or AF scan but scan speed decreases when the squelch opens but does not stop The scanning tuning step shifts from 50 Hz to 10 Hz while the squelch opens Push EXIT one or more times to close a multi function screen if necessary 2 Push F 4 SCAN to select the scan screen 3 Set for pro
54. O ICOM INSTRUCTION MANUAL HF 50 MHz ALL MODE TRANSCEIVER IC 756PRO Icom Inc IMPORTANT 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 756PRO EXPLICIT DEFINITIONS DEFINITION Personal injury fire hazard or electric shock may occur WARNING CAUTION Equipment damage may occur If disregarded inconvenience only No risk of personal injury fire or electric shock NOTE PRECAUTIONS WARNING HIGH VOLTAGE NEVER attach an antenna or internal antenna connector during trans mission This may result in an electrical shock or burn NEVER apply AC to the DC13 8V jack on the transceiver rear panel This could cause a fire or ruin the transceiver NEVER apply more than 16 V DC such as a 24 V battery to the DC13 8V jack on the transceiver rear panel This could cause a fire or ruin the transceiver NEVER let metal wire or other objects touch any internal part or connectors on the rear panel of the transceiver 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 temperatures 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 per
55. O oO Te BO oO 5 gt SE E 2 n v SE 8 D Q Cc 2 TD O Z Q uw oO a E Remote jack CI V information IC 756PRO mini plug cable BC 25 optional LT S ES personal computer OK MESSAGE TO CONTROLLER FB TI m TI 0 5C FE E0 OK code fixed Preamble code fixed are Controller s default address End of message code fixed gt Transceiver s default address gt NG MESSAGE TO CONTROLLER TI m 5C T gt TI is FE 0 y gt NG code fixed gt Preamble code fixed zA Controller s default address End of message code fixed gt Transceiver s default address Command table Command Sub command Description Sub command CONTROL COMMAND 13 Description 00 Send frequency data 01 Same as command 06 Send mode data 02 Read band edge frequencies 03 Read operating frequency 04 Read operating mode 05 Set frequency data Set LSB Set USB Set AM Set CW Set RTTY Set FM Set CW R Set RTTY R Select VFO mode Exchange main and sub readouts Equalize main and sub readouts Turn the dualwatch OFF Turn the dualwatc
56. Push RTTY FIL for 2 sec to enter RTTY filter set mode Push F 1 to select band width item Rotate the tuning dial to select the RTTY filter width from 1 kHz 500 Hz 350 Hz 300 Hz and 250 Hz Push F 3 DEF for 2 sec to select a default value Push F 2 to select twin peak filter item The received audio volume may become greater when the twin peak filter is turned ON Rotate the tuning dial to turn the twin peak filter function ON or OFF Push EXIT to exit the RTTY filter set mode RTTY FIL CW RTTY TPF indicator 250 Gi c AM Ga 0 12 00 DUFO FIL2 14 10000 21 876 58 Cl AHT E CW reverse mode CW R CW Reverse mode receives CW signals with a reverse side CW carrier point like that of LSB and USB modes Use when interfering signals are near a desired signal and you want to change the interference tone Push CW RTTY once or twice to select CW mode 2 Push CW RTTY for 2 sec to select CW or CW R mode e Check the interfering tone e Receive audio tone response 1 3 octave 1 2 octave BFO BFO Push for 2 sec E fN Desired signal Interference Desired signal Interference 600 Hz 800 Hz 600 Hz 400 Hz CW mode USB side CW R mode LSB side E RTTY reverse mode Received characters are occasionally garbled when the receive signal is reversed between MARK and SPACE This reversal can be caus
57. SELECT Set RF SQL open or closed e See p 56 for scan condition e If the RF SQL control function is set as AUTO the squelch is always open in SSB CW and RTTY modes See pgs 3 68 for details Push F 1 MEMO to start the memory scan e Decimal points blink while scanning Push F 3 SELECT to start select memory scan push F 3 SELECT again to return to memory scan if desired aT anz Pa 6 12 00 C020 12 SE FIL ER Ta 19500 UFO Isigan USE P AMP 1 UFO USB FIL2 Id2oS5 00 1 14 18 08 USB SCAH NS 7 _ SELECT MEMORY SCAN LICE an OFF ra s aF SPan an Programmed Pi me scan edges P2 MEMO F SELECT AF SPAH SET zx on Sa 74 90 74 When the scan detects a signal the scan stops pauses or ignores it depending on the resume set ting and the squelch condition To cancel the scan push F 1 MEMO G2 or more memory channels must be designated as select memory channels for select memory 7 scan to start OQ E Setting select memory channels Push EXIT one or more times to close a multi function screen if necessary 2 Select memory mode 3 Push F 4 SCAN to select the scan screen a GD2 4 Ga A 12 00 D 12 GHEE Fi ES 14 195 00 UFO 14 188 06 USE P AMP 1 UFO USB FILZ ATT UlU 20 5 0 0 OEE 1 14 100 00 USE
58. Scan edges P2 5 Set RF SQL open or closed e See previous page for scan condition lf the RF SQL control function is set as AUTO the squelch is always open in SSB CW and RTTY modes See pgs 3 68 for details Push F 1 PROG to start the programmed scan e Decimal points blink while scanning 2 4 Ga 12 00 me D UFO FIL 140 1950900 14 100 00 UES UFO USE FIL2 IU 205S 00 1 14 169 68 USE gt 4 PROGRAM SCAN I 2 aF SPan Programmed P1 scan edges P2 PROG When the scan detects a signal the scan stops pauses or ignores it depending on the resume set ting and the squelch condition To cancel the scan push F 1 PROG X Z If the same frequencies are programmed into the scan edge memory channel P1 and P2 pro Z grammed scan does not start MON E AF scan operation Push EXIT one or more times to close a multi function screen if necessary Select VFO mode or a memory channel 3 Select the desired operating mode The operating mode can also be changed while scan ning Push F 4 SCAN to select the scan screen AL E ik EM 12 00 AXE D VFO GEM FIL2 14 195 00 14 188 06 USB UFO USB FIL2 IU 205 00 1 14 100 600 USE AGC SCAN MID AF Span 10kHz OEE Programmed Pit 4 500 G6MHz scan edges P2 29 999 99MHz WIDE PROG o AF F
59. T IU 205 00 pre 1 14 1600 06 USE AGC SCAN MID WOK OFF AF Span 10kHz TEF Programmed Pit 500 MHz WIDE Scan edges P2 29 999 99MHz MEMO AF SELECT dF SPAN SET 5 Set RF SQL open or closed e See p 56 for scan condition lf the RF SQL control function is set as AUTO the squelch is always open in SSB CW and RTTY modes See pgs 3 68 for details Push F 1 MEMO to start the memory scan e Decimal points blink while scanning EN2 4 Ga LA 4 Dr 122 FIL2 Wa 19500 4188 00 USE UFO USB FILE UCL 1 14 188 68 g r Z MEMORY SCAN Z A RON aF SPan Programmed scan edges When the scan detects a signal the scan stops pauses or ignores it depending on the resume set ting and the squelch condition To cancel the scan push F 1 MEMO 2 or more memory channels must be programmed for memory scan to start WSs 58 E Select memory scan operation SCANS Push EXIT one or more times to close a multi function screen if necessary 2 Select memory mode 3 Select the desired operating mode e The operating mode can also be changed while scan ning Push F 4 SCAN to select the scan screen EN E dk Gao 12 00 12 E Fiz 14 195 00 UFO 14 108 08 USE UFO USB FILZ ORE 1 i4 168 06 SCAN aF SPan Co Programmed Pi Me scan edges P2 MEMO
60. TALLATION AND CONNECTIONS 3 E Required connections e Front panel HF SOMHz TRANSCEIVER SO Glc Jooo Tcom IC 756PRO NR O TUNER MONITOR _ NB ELEC KEY A straight key can be used when the internal electronic keyer is turned OFF in keyer set mode p 42 e Rear panel ANTENNA 1 2 p 14 DC POWER SUPPLY Example ANT1 for 1 8 18 MHz bands ANT2 for 21 50 MHz bands 13 8 V DC 25A GROUND p 14 A ill Use the heaviest gauge wire or strap available and make the connection as short as possible STRAIGHT KEY Grounding prevents electrical shocks TVI and other problems 16 3 INSTALLATION AND CONNECTIONS E Advanced connections e Front panel HFISOMHz TRANSCEIVER HEADPHONES Pe NOn a ES Nore
61. TENANCE E Tuning dial brake adjustment The tension of the tuning dial may be adjusted to suit your preference The brake adjustment screw is located on the right side of the tuning dial See the figure at right Turn the brake adjustment screw clockwise or coun terclockwise to obtain a comfortable tension level while turning the dial continuously and evenly in one direction E Frequency calibration approximate A very accurate frequency counter is required to cali brate the frequency of the transceiver However a rough check may be performed by receiving radio sta tion WWV or other standard frequency signals CAUTION Your transceiver has been thoroughly adjusted and checked at the factory before being shipped You should not calibrate frequencies ex cept for special reasons WAG Push SSB to select USB mode 2 Push PBT CLR for 2 sec to clear the PBT set tings and make sure that the RIT ATX function is not activated 3 Set the frequency to the standard frequency sta tion minus 1 kHz When receiving WWV 10 000 00 MHz as a standard frequency set the operating frequency for 9 999 00 MHz Other standard frequencies can also be used Enz ik Gm iN 12 00 PNT D VFO FIL2 9 999 00 14 100 00 1 USE Push EXIT one or more times to close a multi function screen if necessary Push F 5 SET to select the set mode screen Push F 4 OTHERS to
62. addle Polarity Normal Keser Type ELEC KEY 144 MIC UP Doun Keser OFF OFF DEF Rotate the tuning dial to select the keying weight 1 1 2 8 to 1 1 4 5 can be set e Check the ratio with side tone in CW mode Push F 3 DEF to select a default ratio of 1 1 3 0 Push F 2 to select the Rise Time item Co CKEVER CU KEY i Keser Repeat Time 2s Dot Dash Ratio 1 1 3 Paddle Polarity Normal Keser Type ELEC KEY MIC UP Down Keyer OFF DEF Rotate the tuning dial to select the time which the output power becomes the set transmit power Push F 2 to select the Paddle Polarity item Keser Repeat Time 2s Dot Dash Ratio 1 1 3 0 Rise Time ms Paddle Polarity Normal Keyer Type ELEC KEY MIC Up Down Keyer OFF D Rotate the tuning dial to select the paddle polarity between normal and reverse polarity 2 Push F 2 to select the Keyer Type item 3 Rotate the tuning dial to set the electronic keyer function to electronic keyer bug key or straight key electronic keyer OFF Bug key setting can be substituted for a bug key while operating with a paddle Set to Straight for a real bug key or connect the bug key to KEY on the rear panel AGC MID EK IH OFF 174 OFF a DEF CoC EVER CW KEY 0 Keser Repeat Time 2s Dot Dash Ra
63. and receive the DX station s transmit fre quency 21 025 MHz Start transmitting while the station is standing by 34 E Monitor function RECEIVE AND TRANSMIT D The monitor function allows you to monitor your trans mit IF signals in any mode through the speaker Use this to check voice characteristics while adjusting SSB transmit tones p 65 The CW sidetone func tions regardless of the MONITOR switch setting Push MONITOR e The indicator lights when the monitor function is ON 2 Push EXIT one or more times to close a multi function screen if necessary 3 Push F 5 SET then F 1 LEVEL to enter level set mode Push F 1 4 or F 2 W to select the monitor level item Adjust monitor gain using the tuning dial Pushing F 3 DEF sets the selected item to the default value of the item 6 Push EXIT twice to exit level set mode Use headphones to prevent feedback e Set the transmit tone settings to the 0 dB posi tions to check the unaltered characteristics of transmitter or microphone VWs MONITOR switch EE Ga 0 LA 12 00 D VFO WME FIL 14 195 00 14 188 06 USB 3 P AMP VFO USB FILZ salfa ATT IU 20S 00 Ba 1 14 160 06 USE AGC LEVEL SET MID SSB TX Tone Bass mm GdB SSB TX Tone Treble dB Wo Monitor Level EE OFF Side Tone Level lost 1 50x Side Tone Le
64. annel as a select memory channel choose a memory channel then push F 3 SELECT in the scan screen memory mode or in the memory channel screen e Scan resume ON OFF You can select the scan to resume or cancel when de tecting a signal in set mode Scan resume ON OFF must be set before operating a scan See p 60 for ON OFF setting and scan resume condition details e Scan speed Scan speed can be selected from 2 levels high or low in set mode See p 60 for details e Squelch condition signal then resumes SCAN STARTS PROGRAMMED MEMORY SCAN WITH The scan continues Scan pauses on SQUELCH until it is stopped each channel when OPEN manually and does the scan resume is not pause even if it ON not applicable detects signals when OFF Scan stops when detecting a signal SQUELCH f you set scan resume ON in set mode the CLOSED Scan pauses for 10 sec when detecting a When a signal disap pears while scan is paused scan resumes 2 sec later E Programmed scan operation SCANS Push EXIT one or more times to close a multi function screen if necessary 2 Select VFO mode 3 Select the desired operating mode e The operating mode can also be changed while scan ning Push F 4 SCAN to select the scan screen N2 4k Ga A D VFO FIL2 14 195 00 i4 106 06 USB UFO USB FILZ il 20 1 14 188 06 aF SPan Programmed Pi
65. annel can store an independent set ting Select FM mode 2 Push TONE for 2 sec to enter tone set mode Push F 1 to select the repeater tone item 4 Rotate the tuning dial to select the desired re peater tone frequency Bee TONE FREQUENCY J FAST REPEATER TONE 85 5Hz T S L TONE 88 5Hz uo OFF TOME T DEF T 5CAH 5 Push EXIT to exit tone set mode Available repeater tones 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 CONVENIENT Store repeater tone frequencies and ON OFF settings in memory channels for easy recall E Tone squelch operation RECEIVE AND TRANSMIT 9 The tone squelch opens only when receiving a signal containing a matching subaudible tone You can silently wait for calls from group members using the same tone Push VFO MEMO to select VFO mode 12 00 EN Ga 3 AN D VFO FILZ 2 1290 00 14 188 06 USE UFO USE FIL2 IU 20S 0C 1 14 188 06 USE Push the desired band key 3 Push AM FM
66. apability Full break in QSK oper ation is possible The amplifier power supply unit and the remote control unit are separated SM 20 DESKTOP MICROPHONE Unidirectional electret microphone for base station operation Includes UP DOWN switches and a low cut function AH 4 HF 50 MHz AUTOMATIC ANTENNA TUNER Specially designed to tune a long wire antenna for portable or mobile HF operation The PTT tuner start function provides simple operation Input power rating 120 W AH 2b ANTENNA ELEMENT A 2 5 m long an tenna element for mobile operation with the AH 4 Frequency coverage 3 5 28 MHz bands with the AH 4 SP 20 EXTERNAL SPEAKER 4 audio filters headphone jack can connect to 2 transceivers e Input impedance 8 Q e Max input power 5 W CT 17 CI V LEVEL CONVERTER For remote transceiver control using a personal computer You can change frequencies operating mode memory channels etc HM 36 HAND MICROPHONE Hand microphone equipped with the UP DOWN switches UT 102 VOICE SYNTHESIZER UNIT Announces the receive frequency mode S meter level and current time in a clear electronically generated voice in English or Japanese SP 21 EXTERNAL SPEAKER Designed for base station operation e Input impedance 8 Q e Max input power 5 W 81 Count on us A 5627H 1EX Icom Inc au ene 6 9 16 Kamihigashi Hirano ku Osaka 547 0002 Japan
67. ar other memory channels repeat steps and Eik Gam A 12 00 D 12 FIL2 2496000 WFO 14 195 08 CW A Beep M cL Beep Push for 2 sec Beep ENS mna _ 12 i4 195 00 Cul 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 set mode if desired p 71 MEMORY OPERATION 6 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 desired station is busy for a long time and you want to temporarily search for other stations Use the transceiver s memo pads instead of relying on hastily scribbled notes that are easily misplaced e Writing frequencies and operating modes into memo pads You can simply write the accessed readout frequency and operating mode by pushing MP W 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 Each memo pad must have its own unique combi nation of frequency and operating mode memo pads having identical settings cannot be written NS A Displayed frequency and mode use Push mew 2 128822 4
68. ar the contact number Push EXIT to exit keyer set mode 43 D RECEIVE AND TRANSMIT E Spectrum scope screen This function allows you to display the relative strengths of signals around the center frequency The span can be set to 12 5 kHz 25 kHz 50 kHz and 100 kHz Ideal for monitoring band conditions in an instant Push EXIT one or more times to close a multi function screen if necessary 2 Push F 1 SCOPE to select the scope screen 12 00 G2 4 Gi E LA D VFO FILZ 14 195 00 14 198 06 USE UFO USB FILZ 1 amp 0 1 0 14 100 06 USE MARKER 3 Push F 1 SPAN one or more times to select the scope span Push F 2 ATT one or more times to activate an attenuator or turn the attenuator OFF 10 20 and 30 dB attenuators are available Push F 3 MARKER one or more times to select the marker sub readout or transmit frequency or turn the marker OFF TX MARKER displays the marker at the transmit fre quency SUB MARKER displays the marker at the sub read out frequency anz m 0 12 00 CED WFO FIL er 14 195 00 1 14 166 GE USE D p fed WFO USE FILZ 1 amp 0 1 00 i4 188 06 USE 2B 93 BO T YO OFF OFF WIDE SPAM ae MARKER o o SI 5 Appears when the Sub readout Appears when
69. channel R1 R4 appears push F 5 T R to select transmit voice memory chan nel za I E TOICE RECORDER MID CG JASYUA yox OFF CORP ape MEMORY T T2 T3 T4 TR Push the desired memory channel F 1 T1 F 4 T4 momentarily to transmit the contents ca JASYUA 10s T2 ugs son T4 AGC Co VOICE RECORDER HID WIRE MEMORY Ti T2 T3 T4 T R 6 Push the selected memory channel F 1 T1 F 4 T4 again to stop if desired Push EXIT twice to exit voice memory screen e Transmit monitor function The monitor function can be automatically turned ON while transmitting a voice memory message Call up the voice recorder screen as described above 2 Push F 5 SET to select the voice memory set mode screen 3 Rotate the tuning dial to turn the monitor function ON and OFF Push F 3 DEF to select the default condition WOTCE SET Auto Monitor ON Push EXIT to return to the voice recorder screen e Transmit level setting Call up the voice recorder screen as described at left 2 Push F 3 TX LEV to select the voice memory transmit level set mode screen PGC JOICE RECORD MID Ti CQ JASYUA T2 WOK sie z T4 OFF WIDE TI TE TS T4 DEF G Push the
70. ctivated function OFF 31 32 Transmitted signals are MIC GAIN is set too far clockwise e Set MIC GAIN to a suitable position p 2 distorted Repeater cannot be Split frequency function is not activated e Push SPLIT to turn the function ON p 7 accessed e Programmed subaudible tone frequency is Reset the frequency using set mode p 46 wrong Programmed scan does Squelch is open e Set RF SQL to the threshold point p 3 not stop RF SQL is assigned to RF gain control and Reset RF SQL control assignment and setitto pgs squelch is open the threshold point 3 68 z Programmed scan does The same frequencies have been programmed Program different frequencies in scan edge p 52 T not start in scan edge memory channels P1 and P2 memory channels P1 and P2 o Memory scan does not 2 or more memory channels have not been Program 2 or more memory channels p 52 start programmed Select memory scan does 2 or more memory channels have not been Designate 2 or more memory channels as select pgs 51 not start designated as select channels channels for the scan 59 MAINTENANCE 11 PROBLEM POSSIBLE CAUSE SOLUTION REF The displayed frequency The dial lock function is activated e Push LOCK to deactivate the function p 6 a does not change properly set mode screen is selected e Push EXIT one or more times to exit the set pgs V mode screen 11 64 a e The internal CPU
71. cy in programmed kHz steps 3 Push TS again to turn OFF the indicator Rotate the tuning dial for normal tuning if desired 0000000 SELECTING THE kHz STEP Push TS momentarily to turn the quick tuning step ON 2 Push TS for 2 sec to enter the quick tuning step setting display e Selected tuning steps for all modes appear 556 Ci RTTY AM Fi C E M E ekHz gt WIDE Select the desired operating mode 4 Rotate the tuning dial to select the desired tuning step from 0 1 1 5 9 10 12 5 20 or 25 kHz Repeat steps 3 and to select quick tuning steps for other modes if desired Push EXIT to exit the setting display SELECTING THE 1 Hz STEP The minimum tuning step of 1 Hz can be used for fine tuning Turn OFF the quick tuning step w does not appear 2 Push TS for 2 sec to toggle the 1 Hz tuning step ON and OFF RIT and or ATX also functions in 1 Hz tuning step when used D l r Q Qa a lss a 1 Hz step indicator G2 4 Ga 4 JA 1 00 OFO FILZ 14 195 000 14 168 68 USE WFO USB FIL2 IU 20S5S 0t 1 i4 160 06 USE _ SCOPE _ UOICE MEMORY SCAN SET 1 4 TUNING STEP FUNCTION CW RTTY only While operating in CW RTTY the 1 4 function is avail able for critical tuning Dial rotation is reduced to 1 4 of normal when the 1 4 function is in us
72. d or optional Other manufacturer s microphones have different pin assignments and connection to the IC 756PRO may damage the transceiver Spurious may be received near the following frequencies These are made in the internal circuit and does not indicate a transceiver malfunction 6 144 MHz 8 000 MHz 12 288 MHz 12 890 MHz when spectrum scope is ON 18 433 MHz 24 573 MHz IMPORTANT mire i EXPLICIT DEFINITIONS i PRECAUTIONS cccscsetseeteeennees i 1 TABLE OF CONTENTS nnsnsnannnnene 1 2 PANEL DESCRIPTION 2 13 E Front panel oo Microphone HM 36 E LCD display oee E Screen menu arrangement 11 E Rear panel 12 3 INSTALLATION AND CONNECTIONS osansannnnennnna 14 21 E Unpacking E Selecting a location n se E Grounding aeee E Antenna connection E Required connections E Advanced connections E Power supply connections 17 E Linear amplifier connections 18 E Transverter jack information 19 E External antenna selector or antenna tuner connections 20 E FSK and AFSK SSTV CONNECTIONS 21 4 FREQUENCY SETTING 22 25 E When first applying power CPU resetting c e 22 M Initial settings 0 ee 22 E VFO description eese 23 E Frequency setting with the tuning dial oo eee eee 24 E Direct frequency entry with the keypad ooo eee eee eeee 24 E Ad
73. d spaces can be used Record a message as described above Call up the voice memory recording screen as de scribed in step to above Push F 5 NAME to enter memory name edit condition A cursor appears and blinks 4 Push F 5 T1 T4 one or more times to select the desired voice memory Selected _ ABC MICE PAT RECORDS J character DEE o T2 WN Seo Character T3 LS group T4 keys 123 4 J DEL SPACE Ti T4 5 Input the desired character by rotating the tuning dial or by pushing the band key for number input Push ABC or abc to toggle capital and small letters Push 123 or etc to toggle numerals and symbols e Push F 1 4 or F 2 for cursor movement Push F 3 DEL to delete the selected character e Push F 4 SPACE to input a space Push EXIT to input and set the name e The cursor disappears Repeat steps to to program another voice memory s name if desired Push EXIT twice to exit voice memory screen 39 D RECEIVE AND TRANSMIT E Digital voice recorder continued e Sending a message for transmit Push EXIT one or more times to close a multi function screen if necessary 2 Select a phone mode by pushing SSB or AM FM G Push F 2 VOICE to call up the voice recorder screen Push F 1 PLAY to select the voice memory screen lf the receive voice memory
74. dial while pushing F 2 SET to select the desired memory channel 4 and V can also be used 4 Push EXIT to exit the memory channel screen e Confirming programmed memory channels Select the memory channel screen as described above Rotate the tuning dial while pushing F 1 ROLL to scroll the screen 3 Push F 2 SET to select the highlighted memory channel if desired m MEMORY IG D Le D 99 Pi 0 500 00 LSB FL2 SCAN EDGE uox P2 29 999 99 USB FL2 SCAN EDGE OFF gt EERERTINENTEE FL2 Qo meer ener COMP me Didi es Louse ced OFF g WIDE Pr Se Schnee se sesccss ROLL _ SET SELECT HAME WIDE appears when the memory channel is selected 4 Push EXIT to exit the memory channel screen e Setting a memory channel as a select memory Select memory channels are used for select memory scan Select memory scan repeatedly scans the se lect memory channels only This is useful to soeedup the memory scan interval Of course select memory channels are also scanned during normal memory scan Select the memory channel screen as described at left Rotate the tuning dial while pushing F 2 SET to select the desired memory channel 4 and V can also be used Push F 3 SELECT to set the memory channel as a select memory or not 2 mik Eh A NER 14 195 00 lx 14 168 68 USE P AMP
75. e Push 1 4 to toggle the 1 4 function ON and OFF 1 4 tuning step OFF 1 4 tuning step ON 14 OH AUTO TUNING STEP FUNCTION AM FM only When selecting AM or FM the quick tuning step is automatically selected by the auto tuning step func tion 25 5 RECEIVE AND TRANSMIT E Mode selection The following modes are available in the IC 756PRO SSB LSB USB CW CW R CW reverse RTTY RTTY R RTTY reverse AM and FM Data modes of SSB AM and FM are also available G Microphone signals are muted when data mode is A selected To select a mode of operation push the desired mode switch momentarily Push the switch again to toggle between USB and LSB CW CW R and RTTY RTTY R AM and FM if necessary Push the switch for 2 sec to toggle between normal and data mode CW and CW R RTTY and RTTY R if necessary See the diagram below for the order of selection USB USB D gt LSB LSB D CW CWR fe RTTY RTTY R AM AMD ko FM lt FM D Push mode switch momentarily Push mode switch for 2 sec E Twin PBT operation General PBT Passband Tuning function electronically narrows the IF passband width by shifting the IF fre quency to slightly outside of the IF filter passband to reject interference This transceiver uses the DSP cir cuit for the PBT function Moving both TWIN PBT contro
76. e PTT switch Previously recorded contents are cleared UDICE MIS RECORD gt MID 10s T2 UC T4 EF D 8 10 x WIDE MIC REC LEVEL TMi TI Tz is T4 HAME Adjust the MIC GAIN control so that the MIC REC LEVEL indicator reads within 100 Push the selected memory channel F 1 T1 F 4 T4 again to stop recording e Recording is automatically terminated after 15 sec Push EXIT twice to exit voice memory screen e Confirming a message for transmit Push EXIT one or more times to close a multi function screen if necessary 2 Select a phone mode by pushing SSB or AM FM G Push F 2 VOICE to call up the voice recorder screen 4 Push F 2 MIC REC to select the voice memory recording screen Push the desired memory channel F 1 T1 F 4 T4 momentarily to start playback and con firmation AGC Ci C RECORD 105 T2 WOK Ses T4 OFF 9 oa 188 WIDE MIC REC LEVEL MN TI T T T4 HEME Push the selected memory channel F 1 T1 F 4 T4 again to stop playback if desired Push EXIT twice to exit voice memory screen e Programming a memory name for transmit Memory channels can be tagged with alphanumeric names of up to 20 characters each Capital letters small letters numerals some symbols CES VSa A4 K tp lt gt _7 an
77. e Split indicator En Push SPLIT Dualwatch indicator CD Push DUAL WATCH e Twin peak filter indicator Gi Push RTTY FIL Auto notch indicator GT Push NOTCH Manual notch indicator ij Push NOTCH E VFO description VFO is an abbreviation of Variable Frequency Oscilla tor and traditionally refers to an oscillator The transceiver s VFO is somewhat different The VFO of the IC 756PRO acts like a computer s window and can show one frequency and one operating mode You can call up a desired frequency to the VFO with the keypad memo pad read switch see p 55 or the memory transfer function see p 53 You can also change the frequency with the tuning dial and select the operating mode with the mode switches During dualwatch or split frequency operation the sub VFO is functional non outline non spotted larger fre quency characters While pushing XFC during split frequency operation you can change the transmit readout frequency with the keypad memo pad read switch or the memory transfer function FREQUENCY SETTING 4 HUF CEB Fi ia 100 00 21 876 Se hl FHT l Change TUNING DIAL Transfer Transfer MEMO PAD 28 025 MHz KEYPAD MEMORY CHANNEL 7 001 MHz BAND KEY 21 295 MHz Differences between VFO mode and memory mode VFO MODE VFO shows a frequency and operating mode If the frequency or operating mode
78. ed m character r En JA3YUA Horizon m 4 Character pec Back lisht Switches mm 8 group Diar Lan Font Basicit keys 125 ne lt r q F DEL Spach WIDE E Timer set mode This item sets the current time for the built in 24 hour 15 88 clock See p 62 for details Push F 4 SET to enter the time This item sets the power on time See p 62 for details 15 66 Push F 4 SET to enter the time This item sets the power off period for automatic shut down after the power on timer has turned power ON See p 63 for details min Push F 4 SET to enter the time 67 68 Q SET MODE E Miscellaneous others set mode This item is used for a simple frequency check of the transceiver OH OFF Calibration marker ON Calibration marker OFF firm it This function can be turned OFF for silent op See p 76 for calibration procedure default Z Turn the calibration marker OFF after checking the A frequency of the transceiver A beep sounds each time a switch is pushed to con OH OFF Confirmation beep ON Confirmation beep OFF eration default The volume level can be set in level set mode p 65 OH OFF or exits an amateur band This functions independent Band edge beep ON Band edge beep OFF of the confirmation beep setting above default The volume level can be set in level set mode p 65 The RF SQL control can be set as the RF s
79. ed by incorrect TNC connections settings commands etc To receive a reversed RTTY signal correctly select RTTY R RTTY Reverse mode Push CW RTTY once or twice to select RTTY mode 2 Push CW RTTY for 2 sec to select RTTY or RTTY R mode e Check the receive signal 28 E CW pitch control RECEIVE AND TRANSMIT 9 The received CW audio pitch and monitored CW audio can be adjusted to suit your preferences 300 to 900 Hz without changing the operating frequency The received CW audio pitch can be adjusted in 25 Hz steps Z The filter set mode screen graphically displays the CW pitch operations See below NS E IF filter selection The transceiver has 3 passband width IF filters for each mode For SSB and CW modes the passband width can be set within 50 to 3600 Hz in 50 or 100 Hz steps A total of 41 passband widths are available For RTTY mode the passband width can be set within 50 to 2700 Hz in 50 or 100 Hz steps A total of 32 passband widths are available For AM and FM modes the passband width is fixed and 3 passband widths are available ZG The filter selection is automatically memorized in 7 each mode G The PBT shift frequencies are automatically mem Z orized in each filter e IF filter selection Select the desired mode 2 For RTTY mode turn OFF the RTTY filter by push ing RTTY FIL 3 Push FILTER one or more times to select the IF fi
80. emory channel Push F 4 NAME to edit memory channel name A cursor appears and blinks Memory channel names of blank channels cannot be edited N2 4 Ga FX 12 00 JU TD VFO FIL2 14 195 00 1 14 188 868 USE UFO USB FILE IWN2OS5 00 1 14 189 808 USE E Pi 0 500 00 LSB FL2 SCAN EDGE P2 29 999 99 USB FL2 5 0N EDGE gt FETE gt gt lt 0 O 2 Os JA Selected character da J Character EC group keys 123 4 DEL SPACE WIDE 5 Input the desired character by rotating the tuning dial or by pushing the band key for number input e Push ABC or abc to toggle capital and small letters Push 123 or etc to toggle numerals and symbols Push F 1 4 or F 2 for cursor movement Push F 3 DEL to delete the selected character Push F 4 SPACE to input a space Push EXIT to input and set the name e The cursor disappears 7 Repeat steps to to program another memory channel s name if desired Push EXIT to exit the memory channel screen E Memory clearing Any unnecessary memory channels can be cleared The cleared memory channels become blank chan nels D Select memory mode with VFO MEMO Select the desired memory channel with A V 3 Push M CL for 2 sec to clear the contents e The programmed frequency and operating mode dis appear To cle
81. ency and mode are called up This function is convenient when you operate 3 modes on one band For example one register is used for a CW frequency another for an SSB fre quency and the other one for an RTTY frequency EXAMPLE 14 MHz band Push 21 MHz band Push x x W 14 025 00 w 21 025 00 S 14 195 00 SE 21 295 00 RTTY RTTY 14 090 00 21 090 00 E Direct frequency entry with the keypad The transceiver has a keypad for direct frequency entry as described below Push F INP Ci appears 2 Input the desired frequency Input decimal point between the MHz units and kHz units 3 Push F INP ENT to enter the input frequency eTo cancel the input push MAIN SUB instead of F INP ENT EXAMPLE 14 025 MHz En 04 0G Je C5 sD 18 0725 MHz Ene N38 0 NO Ee I sD 706 kHz ENAC 07 DC Ce JCENT 5 100 MHz Cine JC CT CENT 7 000 MHz 21 280 gt 21 245 ENAC JC2 JC 4 JCS JCENT 24 E Advanced tuning functions FREQUENCY SETTING 4 QUICK TUNING STEP The operating frequency can be changed in kHz steps 0 1 1 5 9 10 12 5 20 or 25 kHz selectable for quick tuning Push TS momentarily to display the quick tuning indicator Quick tuning indicator 12 00 Gi Eh JA CUD VFO FILE 1410000 21 876 58 Cu Rotate the tuning dial to change the frequen
82. ency or operating mode if required 2 Push VFO MEMO for 2 sec to transfer the fre quency and operating mode e Displayed frequency and operating mode are trans ferred to the VFO 3 To return to VFO mode push VFO MEMO mo mentarily TRANSFERRING EXAMPLE IN MEMORY MODE Operating frequency 14 020 MHz CW M ch 16 Contents of M ch 16 14 018 MHz CW 12 00 En Soe Gay LA TD 16 RFF 1402000 UFO 21 328 68 LISE LS MEMO Beep Push for 2 sec 12 00 En 500 ca A D UFO FILE 1402000 14 815 08 Programmed contents appear 53 54 6 MEMORY OPERATION E Memory names All memory channels including scan edges can be tagged with alphanumeric names of up to 10 charac ters each Capital letters small letters numerals some symbols LE amp YX A lt gt 7 and spaces can be used Editing programming memory names Push EXIT one or more times to close a multi function screen if necessary 2 Push F 3 MEMORY to select the memory chan nel screen 12 00 CED VFO WE FIL FER 14 195 00 i G02 4 Ga 3 AN Fi 14 168 68 USB P AMP 1 VFO USB FILZ ATT IUW2oSs 00 mals i 14 100 00 USE MEMORY 99 Pi 8 509 060 LSB FL2 SCAN EDGE P2 29 999 99 USB FL2 SCAN EDGE Hi 14 100 00 USB FL2 ROLL SET SELECT HAME WILE J 3 Select the desired m
83. end pgs 24 50 e g to enter 14 195 MHz push F INP 1 4 1 9 5 F INP ENT MEMO PAD WRITE SWITCH MP W p 55 Programs the selected readout frequency and op erating mode into a memo pad The 5 most recent entries remain in memo pads The transmit frequency is programmed when pushed to gether with XFC The memo pad capacity can be expanded from 5 to 10 in set mode for your convenience p 71 DUALWATCH SWITCH DUALWATCH p 31 Turns the dualwatch function ON and OFF when pushed Turns the dualwatch function ON and equalizes the sub readout frequency to the main readout when pushed for 2 sec Quick dualwatch func tion a quick dualwatch function can be turned OFF using set mode p 68 SPLIT SWITCH SPLIT p 32 Turns the split function ON and OFF when pushed Turns the split function ON equalizes the sub readout frequency to the main readout and sets the sub readout for frequency input when pushed for 2 sec in non FM modes Quick split function e The offset frequency is shifted from the main readout frequency in FM mode pgs 46 69 e The quick split function can be turned OFF using set mode p 68 Turns the split function ON and shifts the sub readout frequency after inputting an offset 4 MHz in 1 kHz steps RECEIVE INDICATOR RX Lights green while receiving a signal and when the squelch is open TRANSMIT INDICATOR TX Lights red while transmi
84. enter miscellaneous oth ers set mode Push F 1 several times to select the Calibra tion marker item Rotate the tuning dial clockwise to turn the calibra tion marker ON e Side tone may be heard OTHERS SET Beep Confirmation ON BE IH BeeP Band Edge ON OFF RF SQL Control RF 5QL Quick Dualuatch ON 144 Quick SPRIT ON OFF FM SPLIT Offset lt HF gt 8 188MHz a we DEF WIDE Adjust the calibration pot on the right side panel of the transceiver for a zero beat with the received standard signal as shown below e Zero beat means that two signals are exactly the same frequency resulting in a single tone being emitted Rotate the tuning dial counterclockwise to turn the calibration marker OFF O Push EXIT twice to exit set mode OINTERNALVIEWS 12 DS e Top view PA unit PA fuse FGB 5 A Bottom view RF unit O O g ma a Internal antenna De tuner FILTER unit Clock backup battery PLL unit Space for optional voice synthesizer UT 102
85. er Set Mode 500 00 LSB FL2 999 99 USB FL2 SCAN EDGE SCAN EDGE DISP TIME OTHERS SELECT HAME 7 12 2 PANEL DESCRIPTION E Rear panel RECEIVE ANTENNA CONNECTOR RX ANT p 16 Connects a 50 Q general coverage antenna with an RCA connector TRANSVERTER JACK XVERT p 19 External transverter input output jack Activated by voltage applied to ACC 2 pin 6 TUNER CONTROL SOCKET TUNER p 16 Accepts the control cable from an optional AH 4 HF 50 MHz AUTOMATIC ANTENNA TUNER or AH 3 HF AUTOMATIC ANTENNA TUNER ACCESSORY SOCKET 1 ACC 1 ACCESSORY SOCKET 2 ACC 2 Enable connection of external equipment such as a linear amplifier an automatic antenna selector tuner TNC for data communications etc e See p 13 for socket information STRAIGHT KEY JACK KEY p 15 Accepts a straight key or external electronic keyer with 1 4 inch standard plug ELEC KEY on the front panel can be used for a straight key or external electronic keyer Deactivate the internal electronic keyer in keyer set mode p 42 X Y If you use an external electronic keyer make sure Y the voltage retained by the keyer is less than 0 4 ZN when the key is ON SS
86. er the set time Push EXIT to cancel the setting Push EXIT twice to exit timer set mode E Timer operation Preset the power on time and power off period as described previously 2 Push POWER momentarily to turn the timer func tion ON The POWER light lights when the timer function is ON POWER Oo Oo D m m D D 3 Push POWER for 2 sec to turn the power OFF e The POWER light lights continuously 4 When the set time arrives the power is automati cally turned ON The transceiver emits 10 beeps and turns OFF after the power off period elapses e The POWER light blinks while beeping Push POWER momentarily to cancel the power off timer if desired 63 64 9 SET MODE E Set mode description Set mode is used for programming infrequently changed values or conditions of functions This trans ceiver has a level set mode display set mode timer set mode and miscellaneous others set mode e Set mode operation Push EXIT one or more times to close a multi function screen if necessary 2 Push F 5 SET to select the set mode screen G Push F 1 LEVEL F 2 DISP F 3 TIME or F 4 OTHERS to enter the desired set mode 4 For display or miscellaneous others set mode push F 5 WIDE to toggle wide and normal screen 5 Push F 1 or F 2 to select the desired item Start up screen
87. essor ON and OFF in SSB mode p 37 Toggles the narrow middle or wide trans mit filter when pushed for 2 sec v What is the speech compressor The speech compressor compresses the transmitter audio input to increase the average audio output level Therefore talk power is increased This function is effective for long dis tance communication or when propagation conditions are poor Turns the 1 4 function ON and OFF in CW and RTTY modes p 25 e 1 4 function sets dial rotation to 1 4 of normal for fine tuning Toggles the tone encoder tone squelch function and no tone operation when pushed in FM mode pgs 46 47 Enters the tone set mode when pushed for 2 sec in FM mode pgs 46 47 2 PANEL DESCRIPTION OOG et se 1 0 C6 09 COC C D Too cas aa G O EJE 7 2 5 C a m Ga Ca EB Cl o LJ Te wew_ x NOTC Si CW PITCH l CJ ey y W 2 wy ri Q CJ RIT i ATX ee RIT TX CE l Le WH SW 000 eme COMP KEY SPEED BK IN DELAY LOCK SWITCH LOCK p 45 Turns the dial lock function ON and OFF RIT ATX CONTROL RIT ATX p 34 Shifts the receive and or transmit frequency without changing the transmit and or
88. fective for FM It is also available for other modes 12 to 1 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 set mode as follows p 68 SET MODE SETTING AUTO RF GAIN SQL RF GAIN RF GAIN SQL SQL RF GAIN SQL When setting as RF gain squelch control Noise squelch FM mode wae Recommended level Squelch s ee open eee Se Maximum RF gain RF gain 4 adjustable S meter range squelch e When functioning as RF gain control Squelch is fixed open SSB CW RTTY only Maximum RF gain Adjustable range Minimum RF gain vA e When functioning as squelch control RF gain is fixed at maximum Noise squelch Noise squelch FM mode threshold S meter squelch FM mode y threshold Squelch is S meter open squelch Shallow Deep X While rotating the RF gain control noise may be Y heard This comes from the DSP unit and does not indicate an equipment malfunction SS PANEL DESCRIPTION 2 RF POWER CONTROL RF POWER Continuously varies the RF output power from min imum 5 W to maximum 100 W AM mode 5 W to 40 W Decreases Increases RF POWER BALANCE CONTROL BAL inner control p 31 Adjusts the audio output balance between main and sub readout
89. g the TUNER switch indicator goes out AUTOMATIC TUNER START HF bands only If you want to deactivate the tuner under conditions of VSWR 1 5 1 or less use the auto tuner start function and turn the tuner OFF This function activates the tuner automatically when the SWR exceeds 1 5 1 This function is turned ON in set mode p 69 PTT TUNER START The tuner is always tuned when the PTT is pushed after the frequency is changed more than 1 from last tuned frequency This function removes the oush and hold TUNER operation and activates for the first transmission on a new frequency This function is turned ON in set mode p 69 NOTES If the tuner cannot tune the antenna Check the following and try again the ANT connector selection 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 transmit power 8 W for HF bands 15 W for 50 MHz band the power source voltage capacity If the tuner cannot reduce the SWR to less than 1 5 1 after checking the above perform the following repeat manual tuning several times tune with a 50 Q dummy load and re tune the antenna turn power OFF and ON adjust the antenna cable length This is effective for higher frequencies in some cases e Tuning a narrow bandwidth antenna Some antennas especially for low bands have a nar row bandwidth These anten
90. grammed scan or AF scan as described on previous page Push F 1 PROG or F 2 AF to start a scan e Decimal points blink while scanning Ei k Gi 4 CED VFO WE FIL 140 192590 Iriga ga USE pe Sn 2 a F AMP 1 UFO USB FILZ I2os 0 0 1 14 100 68 USB gt FA Z PROGRAM SCAN Z ae of AD oD aa ao TE D0 qa AF SPan 1 kH Programmed Pi 6 568 0 scan edges P2 29 999 9 gg Tr o pari m PROG dF FIHE AF SPAH SET Push F 3 FINE to start a fine scan FINE PROGRAM SCAN or FINE AF SCAN appears enzi Ga 3 LN CD VFO IEE FIL 140 192500 ETEME USE UFO USB FIL2 IU205 00 1 14 168 68 USE LY ra ZFINE PROGRAM SCAN 2 AF SPan Programmed Pi scan edges P2 6 When the scan detects a signal the scan speed decreases but does not stop Push F 1 PROG or F 2 AF to stop the scan push F 3 FINE to cancel the fine scan E Memory scan operation Push EXIT one or more times to close a multi function screen if necessary 2 Select memory mode 3 Select the desired operating mode e The operating mode can also be changed while scan ning Push F 4 SCAN to select the scan screen AAT G 2 4k Ga A 12 00 12 FIL2 METER 195 00 WFO 14 100 00 USE P AMP 1 UFO USB FIL2 AT
91. gs after resetting if de sired E Initial settings After resetting the transceiver set controls and switches as shown in the figure below FREQUENCY SETTING E When first applying power CPU resetting POWER F INP M CL O O E O oO O oO r Under cooler temperatures the LCD may appear dark and unstable after turning power ON This is normal and does not indicate any equipment mal 2 function BQ ANT 1 P AMP 1 METER Po CW Max clockwise CCW Max counterclockwise ATT OFF PBT CLR OFF POWER OFF TUNER MONITOR TE NB NR OFF U R AF Max CCW Qi ame X NOTCH OFF 000 o O om come oom RF SQL 12 o clock n O ry MIC GAIN 10 12 o clock AGC MID LOCK OFF RF POWER Max CW COMP 2 OFF WIDE 1 4 2 TONE OFF VOX BK IN 2 gt 1 FAST in FM mode RTTY FIL OFF 2 Appears in some modes Turn power ON then check the display If any of the following indicators appear turn them OFF as follows Quick tuning step indicator W Push TS 1 Hz frequency readout Push TS for 2 sec while quick tuning step is OFF RIT indicator Ga Push RIT ATX indicator 7 Push ATX
92. h ON Select main readout Select sub readout 0001 0101 Select memory mode Select memory channel 1P1 0100 P2 0101 Memory write Memory to VFO Memory clear Scan stop Programmed memory scan start Programmed scan start AF scan start Fine programmed scan start Fine AF scan start Memory scan start Select memory scan start Set AF scan span 5 kHz A2 10 kHz A3 20 kHz A4 50 kHz A5 100 kHz A6 500 kHz A7 1 MHz Set as non select channel Set as select channel Set scan resume OFF Set scan resume ON 01 level data 10 level data AF level setting 0 max CCW to 255 max CW RF level setting 0 max CCW to 255 11 o clock SQL level setting 0 11 o clock to 255 max CW NR level setting 0 min to 255 max Inside TWIN PBT setting or IF shift setting 0 max CCW 128 center 255 max CW Outside TWIN PBT setting 0 max CCW 128 center 255 max CW CW PITCH setting 0 low pitch to 255 high pitch RF POWER setting O min to MIC GAIN setting 0 min to 255 max KEY SPEED setting 0 slow to 255 fast NOTCH setting 0 low freq to 255 high freq COMP setting O min to BK IN DELAY setting 0 short delay to 255 long delay BAL setting 0 max CCW 128 center 255 max CW 01 Read squelch condition Read S meter level Turn the split function OFF Turn the split function ON 10 Hz 1 Hz tuning step
93. hat is the AGC The AGC controls receiver gain to produce a constant audio output level even when the received signal strength is varied by fading etc Select FAST for tuning and select MID or SLOW depending on the receiving condition Turns the VOX function ON and OFF when pushed in non CW modes p 35 Enters the VOX set mode when pushed for 2 sec in non CW modes p 35 v What is the VOX function The VOX function voice operated transmission starts trans mission without pushing the transmit switch or PTT switch when you speak into the microphone then automatically re turns to receive when you stop speaking Selects semi break in full break in oper ation or turns the break in operation OFF when pushed in CW mode v What is the break in function The break in function toggles transmit and receive with CW keying Full break in QSK can monitor the receive signal during keying Turns the RTTY filter ON and OFF in RTTY mode p 28 When the RTTY filter is turned ON TWIN PBT functions as the IF shift control Enters the RTTY filter set mode when pushed for 2 sec in RTTY mode p 28 v What is the IF shift The IF shift function electronically changes the center of the IF Intermediate Frequency passband frequency to reject in terference Only the inner control of TWIN PBT can be used for the IF shift control Turns the speech compr
94. hose of connected transceivers or re ceivers and vice versa When connecting the IC 756PRO to the IC 735 for H OFF OPTION INSTALLATION 1 0 E Opening the transceiver s case Follow the case and cover opening procedures shown Z here when you want to install an optional unit or adjust the internal units etc CAUTION DISCONNECT the DC power cable from the transceiver before performing any work on the transceiver Otherwise there is danger of electric shock and or equipment damage WAV D Remove 2 screws from the left side of the trans ceiver to remove the carrying handle as shown below 2 Remove 7 screws from the top of the transceiver and 4 screws from the sides then lift up the top cover 3 Turn the transceiver upside down 4 Remove 6 screws from the bottom of the trans ceiver then lift up the bottom cover E UT 102 VoIcE SYNTHESIZER UNIT The UT 102 announces the accessed readout s fre quency mode etc S meter level can also be an nounced p 71 in a clear electronically generated voice in English or Japanese Push SPEECH to announce the frequency etc Remove the top and bottom covers as shown above 2 Remove the protective paper attached to the bot tom of the UT 102 to expose the adhesive strip 3 Plug UT 102 into J3502 on the MAIN unit as shown in the diagram at right Return the top and bottom covers to their original positions 7
95. i4 195 00 USE oe CT GN2 4 Ga _ 12 00 CUD VFO GEESE FIL2 08800 Push for 2 sec A Beep uw E EN a A D VFO FIL2 12 00 708800 12 7 883 00 LSE Programming in memory mode D Select the desired memory channel with AJ W in memory mode Memory channel contents appear in the memory chan nel readout below the frequency readout e appears if the selected memory channel is a blank channel and does not have contents Set the desired frequency and operating mode in memory mode To program a blank channel use direct frequency entry with the keypad or memo pads etc 3 Push MW for 2 sec to program the displayed fre quency and operating mode into the memory channel EXAMPLE Programming 21 280 MHz USB into memory channel 18 12 00 ENS Ga AN D 12 GREE Fil 708800 UFO i4 195 00 USE oo D 19 Em ri 12 00 3502 00 i4 195 00 USE Enk Gam 4 ZA 12 00 D 18 FILE 2 1280 00 UFO 14 195 88 USE Push for 2 sec Beep age Beep mik Ga 12 00 TD 18 FIL2 2 1280 00 14 195 06 USB 52 E Frequency transferring The frequency and operating mode in a memory chan nel can be transferred to the VFO MEMORY OPERATION 6 Frequency transferring can be performed in either VFO mode or memory mode e Transferring in VFO mode This is useful for transferri
96. ing fre quency 7 Nhen connecting the AH 4 AH 3 the antenna connector assignments are ANT2 for the internal tuner and ANT1 for the AH 4 AH 3 The antenna indicator in the LCD displays ANT1 EXT when the AH 4 AH 3 is connected and selected e The AH 3 can be used for HF bands only It can not be used for the 50 MHz band RKK e AH 4 AH 3 operation Z Tuning is required for each frequency Be sure to GY re tune the antenna before transmitting when you Z change the frequency even slightly Set the desired frequency in an HF or 50 MHz band for using with the AH 4 Set the desired fre quency in an HF band for using with the AH 3 The AH 4 AH 3 will not operate on frequencies outside of ham bands Push TUNER for 2 sec e The TUNER light blinks while tuning TUNER switch Oo Oo D O D m D The TUNER light lights constantly when tuning is complete When the connected wire cannot be tuned the TUNER light goes out the AH 4 AH 3 is bypassed and the antenna wire is connected to the antenna con nector on the transceiver directly To bypass the AH 4 AH 3 manually push TUNER When using an external antenna tuner such as the IC PW1 s tuner IC 4KLs tuner or IC AT500 with a lin ear amplifier tune with the external antenna tuner while the internal tuner is turned OFF After tuning is completed turn the internal tuner ON Otherwise both tuners tune simultane
97. ing the recorded audio Push EXIT one or more times to close a multi function screen if necessary Select a phone mode by pushing SSB or AM FM Push F 2 VOICE to call up the voice recorder screen 4 Push F 1 PLAY to select the voice memory screen e If the transmit voice memory channel T1 T4 appears push F 5 T R to select receive voice memory chan nel VOICE RECORDER Ri 14 100 090 USB 15 38 8s R2 WOK SES R COMP OFF WIDE Ri F2 ES R4 TAR AGC MID Push the desired memory channel F 1 R1 F 4 R4 momentarily to playback AGC MID AJILA dann GE 14 195 00 R2 R3 Push F 1 PLAY to select the voice memory screen lf the transmit voice memory channel T1 T4 appears push F 5 T R to select receive voice memory chan nel AGC VOICE RECORDER AID Ri 14 100 029 USB 15 39 amp s R2 vox a R COMP OFF WIDE Ri R2 RS R4 T R B MEMORY Push the desired memory channel F 1 R1 F 4 R4 for 2 sec to start recording e The operating frequency mode and current time are programmed automatically Previously recorded contents are cleared UOTCE RECORDER GB 14 195 00 USB 10 10 R2 R3 R4 MEMORY R 6 Push the selected memory channel
98. inued This item sets the rate at which frequencies are scanned when the microphone UP DN switches are pushed and held High or low can be selected HIGH High speed default 50 tuning steps sec LOI Low speed 25 tuning steps sec This item sets the data transfer rate 300 1200 4800 transceive operation you must change the operating frequency data length to 4 bytes e This item must be set to ON only when operating trans ceiver with the IC 735 4 bytes of frequency data 5 bytes of frequency data default AUTO 19288 9600 19200 bps and AUTO are available Auto baud rate 19200 bps default When AUTO is selected the baud rate is automati cally set according to the connected controller or re mote controller To distinguish equipment each CI V transceiver has SCH FFH its own Icom standard address in hexadecimal code Address of 5Ch Address of 7Eh The IC 756PRO s address is 5Ch default When 2 or more IC 756PRO s are connected to an optional CT 17 ci V LEVEL CONVERTER rotate the tun ing dial to select a different address for each IC 756PRO in the range 01h to 7Fh Transceive operation is possible with the IC 756PRO CH OFF connected to other Icom HF transceivers or receivers Transceive ON Transceive OFF default When ON is selected changing the frequency op erating mode etc on the IC 756PRO automatically changes t
99. l when the speech compressor is in use E SWR reading The SWR meter indicates the SWR over the trans SWR meter mission line in all modes Push TUNER to turn the antenna tuner OFF 2 Push METER one or more times to select the Po meter 3 Push CW RTTY once or twice to select RTTY mode Push TRANSMIT 5 Rotate RF POWER clockwise past the 12 o clock position for more than 30 W output power 30 6 Push METER once to select the SWR meter as the transmit meter T Read the SWR on the SWR meter Less than 1 5 1 Y G The built in antenna tuner matches the transmitter Y to the antenna when the SWR is lower than 3 1 SS E Speech compressor RECEIVE AND TRANSMIT 9 The RF speech compressor increases average RF output power improving signal strength and readabil ity in SSB e Speech compressor Select USB or LSB mode 2 Push COMP momentarily to turn the speech compressor ON and OFF 3 Push COMP for 2 sec to toggle between narrow middle or wide transmit filter e Transmit filter width NAR 2 0 kHz MID 2 6 kHz WIDE 2 9 kHz e Compression level setting Select USB or LSB mode 2 Preset the transceiver as follows COMP function OFF METER function ALC MIC GAIN control Center position COMP control Center position RF POWER control Max counterclockwise 3 Transmit at your normal voice level Adjust the MIC GAIN control so tha
100. le of setting 21 290 MHz for re ceiving and 21 310 MHz for transmitting D Set 21 290 MHz USB in VFO mode 12 00 E tk CM 5 ID VFO WE FIL 2 1290 00 14 1060 06 USE UFO USE FILZ Id 20S O0 1 14 188 06 USE Push SPLIT momentarily then push CHANGE for 2 sec e The quick split function is much more convenient for se lecting the transmit frequency See the next section for details e The equalized transmit frequency and appear on the LCD TX appears to show the transmit frequency s readout Ek Gam N 12 00 UFO FILZ 2 129000 1 14 160 06 USE CD WFO USB FILZ 2 1280 1 i4 160 06 USB 3 Rotate the tuning dial while pushing XFC to set the transmit frequency to 21 310 MHz e The transmit frequency can be monitored while push ing XFC or using dualwatch GN2 4 Ga A 12 00 UFO FIL2 2 1 290 00 14 188 06 USE CD WFO USB FIL 1 5 TON 1 14 166 68 USE 4 Now you can receive on 21 290 MHz and transmit on 21 310 MHz To change the transmit and receive frequencies push CHANGE to exchange the main and sub readouts CONVENIENT DIRECT SHIFT FREQUENCY INPUT The shift frequency can be entered directly Push F INP Enter the desired shift frequency with the digit keys e1 kHz to 1 MHz can be set When you require a minus shift direction push in advance
101. ls to the same position shifts the IF The LCD shows the passband width and shift fre quency graphically Push FILTER for 2 sec to enter the filter set mode Current passband width and shift frequency is dis played in the filter set mode screen To set the TWIN PBT controls to the center posi tions push PBT CLR for 2 sec The variable range depends on the passband width and mode The edge of the variable range is half of the passband width and PBT is adjustable in 25 or 50 Hz steps These controls function as an IF shift control while in AM mode and when the RTTY filter is turned ON Only the inner control may function in this case IF shift is adjustable in 20 40 Hz steps in RTTY RTTY fil ter is turned ON or 150 300 500 Hz steps in AM 77 TWIN PBT should normally be set to the center posi tions PBT setting is cleared when there is no interfer ence When PBT is used the audio tone may be changed e Not available for FM mode While rotating TWIN PBT noise may occur This comes from the DSP unit and does not indicate an equipment malfunction RQ MN PBT OPERATION EXAMPLE Both controls at center position TWIN PBT 4 IF center frequency Cutting a lower passband TWIN PBT e Passband Interference Desired signal Cutting both higher and lower passbands TWIN PBT 1e oi Passband Interference Interference Desired signal 26 E Notch functio
102. lt This item allows you to set a maximum volume level for confirmation beep tones Confirmation beep tones are linked to the AF control until a specified volume level is reached further rotation of the AF control will not increase the volume of the beep tones JH OFF Beep level is limited with Beep level is linked to AF AF default 65 66 Q SET MODE E Display set mode 7 To adjust the LCD contrast or backlight wait until the LCD becomes stable 10 min or more after turning power ON This is an inherent characteristic of LCDs and LCD backlights and does not indicate a transceiver malfunction WAQ AW mh 1 OB 60 default to 100 in 1 steps mi 1 SA 50 default This item adjusts the horizontal position of the LCD from 1 to 8 im 1 1 4 Horizontal position is 4 default This item adjusts the brightness of the switches from 1 to 8 SSS Backlight level is 8 Maximum default This item sets the LCD screen type There are 4 se lectable types A B C and D A A type LCD screen default This item sets the font of the frequency readouts There are 7 selectable fonts Basic 1 Basic 2 Pop 7seg 7 segment numeral Italic 1 Italic 2 and Clas sic Basicl Basic 1 font default This item sets the memory name indication ON and OFF See p 54 for details CH OFF Memory name is displayed Memor
103. lter 1 2 or 3 e The selected passband width and filter number is dis played in the LCD Passband Selected width IF filter EN Ga lt k D VFO FILZ 14 195 00 1 14 188 85 USE UFO USB FILZ IU 205 00 1 14 188 06 USE e Filter passband width setting SSB CW and RTTY mode only Select SSB CW or RTTY mode Passband widths for AM and FM modes are fixed and cannot be set 2 For RTTY mode turn OFF the RTTY filter by push ing RTTY FIL 3 Push FILTER for 2 sec to enter filter set mode Passband Selected width IF filter 12 00 OO z d Gi NN D VFO FILZ 14 195 14 188 GE USE UFO USB FIL2 I 20OS5 0 0 14 188 68 USE 3 SSB A PETI IPET2 FIL3 1 8K 4 Push FILTER one or more times to select the de sired IF filter While pushing F 1 BW rotate the tuning dial to set the desired passband width eIn SSB and CW modes the passband width can be set within the following range 50 to 500 Hz 50 Hz steps 600 to 2700 Hz 100 Hz steps eIn RTTY mode the passband width can be set within the following range 50 to 500 Hz 50 Hz steps 600 to 2700 Hz 100 Hz steps Push F 3 DEF to select the default value Repeat steps 4 to if desired Push EXIT to exit the filter set mode screen The PBT shift frequencies are cleared when the
104. n RECEIVE AND TRANSMIT 9 This transceiver has auto and manual notch func tions The auto notch function automatically attenu ates more than 3 beat tones tuning signals etc even if they are moving The manual notch can be set to attenuate a frequency via the NOTCH control Push NOTCH to toggle the notch function be tween auto manual and OFF in SSB and AM modes Push NOTCH to turn the manual notch function ON and OFF in CW mode Push NOTCH to turn the auto notch function ON and OFF in FM mode Set to attenuate a frequency for manual notch via the NOTCH control AN appears when auto notch is in use MN appears when manual notch is in use N G While operating the manual notch noise may be Y heard This comes from the DSP unit and does not Z indicate an equipment malfunction NN Auto notch OFF Auto notch ON Desired signal AF Desired signal AF Unwanted tone frequency Particular frequency is attenuated E Noise reduction The noise reduction function reduces noise compo nents and picks out desired signals which are buried in noise The received signals are converted to digital signals and then the desired signals are separated from the noise Push the NR switch to turn the noise reduction ON NR indicator lights 2 Rotate the NR control to adjust the noise reduc tion level 3 Push the NR switch to turn the noise reduction OFF NR indicat
105. nas may not be tuned at the edge of their bandwidth therefore tune such an antenna as follows Suppose you have an antenna which has an SWR of 1 5 1 at 3 55 MHz and an SWR of 3 1 at 3 8 MHz Push TUNER to turn the antenna tuner ON Select CW mode Turn OFF the break in function p 5 4 Push TRANSMIT to set to the transmit condition 5 Set 3 55 MHz and key down 6 Set 3 80 MHz and key down Push TRANSMIT to return to the receive condition RECEIVE AND TRANSMIT 9 E Optional external tuner operation e AH 4 AH 3 HF AUTOMATIC ANTENNA TUNER The AH 4 AH 3 matches the IC 756PRO to a long wire antenna more than 3 m 10 ft long 3 5 MHz and above or more than 12 m 40 ft long 1 8 MHz and above e See p 20 for the transceiver and AH 4 AH 3 connection See the AH 4 AH 3 instruction manual for AH 4 AH 3 in stallation and antenna connection details AH 4 AH 3 setting example For mobile operation lt Optional AH 2b antenna element For outdoor operation Long wire 7 WARNING HIGH VOLTAGE Z NEVER touch the antenna element while tuning Y or transmitting ANNY NEVER operate the AH 4 AH 3 without an antenna wire The tuner and transceiver will be damaged NEVER operate the AH 4 AH 3 when it is not grounded Transmitting before tuning may damage the trans ceiver Note that the AH 4 AH 3 cannot tune when using a 1 2 long wire or multiple of the operat
106. ng programmed contents to VFO Select VFO mode with VFO MEMO 2 Select the memory channel to be transferred with A V e Memory channel screen is convenient for selecting the desired channel Memory channel contents appear in the memory chan nel readout below the frequency readout e appears if the selected memory channel is a blank channel In this case transferring is impossible G Push VFO MEMO for 2 sec to transfer the fre quency and operating mode Transferred frequency and operating mode appear on the frequency readout TRANSFERRING EXAMPLE IN VFO MODE Operating frequency 21 320 MHz USB VFO Contents of M ch 16 14 018 MHz CW 12 00 02 4 Gi PA CED UFO FIL2 2 1320 00 14 958 88 USE Restez GM2 4 EM 12 00 L CED UFO FIL2 2 1320 00 14 815 06 ch B Em TE Beep Push for 2 sec Gh 500 ca JA 12 00 CED UFO FIL2 4 0 18 00 14 615 68 cu e Transferring in memory mode This is useful for transferring frequency and operating mode while operating in memory mode G When you have changed the frequency or operat GY ing mode in the selected memory channel e Displayed frequency and mode are transferred e Programmed frequency and mode in the mem ory channel are not transferred and they remain in the memory channel WQAA A Select the memory channel to be transferred with A W in memory mode And set the frequ
107. nna tuner ON OFF condition is consistent with the ANT switch e Antenna switch selection example Under the following condition Auto should be se lected as the ANT switch set mode item When you use 2 antennas Under the following conditions Manual should be selected as the ANT switch set mode item When using 1 antenna When using the EX 627 HF AUTOMATIC ANTENNA SELECTOR for more than 3 antennas except for re ceive antenna When using an external antenna tuner E Dial lock function The dial lock function prevents changes by accidental movement of the tuning dial The lock function elec tronically locks the dial Push LOCK to toggle the dial lock function ON and OFF e The LOCK indicator lights when the dial lock function is in use LOCK indicator Ca O OQ QO EI m oO LOCK switch 45 46 5 RECEIVE AND TRANSMIT E Repeater operation A repeater amplifies received signals and retransmits them at a different 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 Z For accessing a repeater which requires a repeater GY tone set the repeater tone frequency in set mode Z as described below QV Set the offset frequencies HF
108. nnels ee 50 E Memory channel selection 50 E Memory channel screen s 51 E Memory channel programming 52 E Frequency transferring M Memory names ooeec E Memory clearing ete E Memo pads 7 SCANS sisiscsiccisissssenenrese 56 61 E Scan types aiee 56 M Preparation 56 E Programmed scan operation 57 Qty M AF scan operation sesse 57 E Fine programmed scan fine AF scan ooo eeeeeeeeeeeeeeeeeeeeeeee E Memory scan operation E Select memory scan operation 59 E Setting select memory channels 59 E Scan set mode 60 E Tone scan 61 8 CLOCK ANDTIMERS E Setting the current time E Setting power on time E Setting power off period ea Mi Timer operation 9 SET MODE c cccesceeeeeees 64 72 E Set mode description s 64 E Level set mode 65 E Display set mode 66 E Timer set Mode aeee 67 E Miscellaneous others set mode 68 10 OPTION INSTALLATION 73 E Opening the transceiver s case 73 E UT 102 VOICE SYNTHESIZER UNIT css en ae ares 73 11 MAINTENANCE 0 74 76 E Troubleshooting sessen 74 E Fuse replacement 0 ceee 75 E Clock backup battery replacement
109. nternal installed you can select between English and Japan ese as the language See p 73 for unit installation English announcement default CELF CR LF CR LF RTTY decoder See p 41 for details CR LF and CR LF CR LF only default CR Carriage Return LF Line Feed 2 VOICE SYNTHESIZER UNIT iS Ernalish JaPanese Japanese announcement installed you can select between faster or slower syn thesizer output See p 73 for unit installation HIGH Faster announcement default LOL Slower announcement When the optional UT 102 VOICE SYNTHESIZER UNIT S installed you can have frequency mode and signal H OFF level announcement Signal level announcement can Signal level announcement No signal level be deactivated if desired default announcement When OFF is selected the signal level is not an nounced See p 73 for unit installation a 15 available 5 or 10 memo pads can be set 5 memo pads 10 memo pads default This item sets the auto tuning step function When ro HIGH Baa o ra ste fatation tating the tuning dial rapidly the tuning step automat default ically changes several times as selected LOI Auto tuning step is turned ON There are 2 type of auto tuning steps HIGH Fastest Faster tuning step during rapid rotation and LOW Faster OFF Auto tuning step is turned OFF 71 72 Q SET MODE E Miscellaneous others set mode cont
110. old Push EXIT to exit keyer set mode Z If a strong signal is received ghost waveform may A appear Push F 2 ATT one or more times to acti 7 vate the spectrum scope attenuator in this case SS 44 E Automatic antenna selection RECEIVE AND TRANSMIT 9 The transceiver covers 0 1 60 MHz over 10 bands Each band key has a band memory which can mem orize a selected antenna ANT1 ANT2 ANT 1 RX an tenna and ANT2 RX antenna When you change the operating frequency beyond a band the previously used antenna is automatically selected for the new band This function is convenient when you use 2 or 3 antennas To use the band memory enter set mode and confirm that Auto is selected as the ANT switch item p 70 FM SPLIT Offset HF gt 6 19GMHz FM SPLIT Offset 58M 6 S QMHz SPLIT LOCK Tuner Auto Start Tuner PTT Start CANT Switch Auto RTTY Mark Frequency 2125 F DEF WIDE When OFF is selected the ANT switch does not function and ANT1 is always selected When Manual is selected the ANT switch functions however band memory does not function In this case you must select an antenna manually When Auto is selected default setting the antenna tuner ON OFF condition is also memorized in the band memory When Auto or Manual is selected the ante
111. or does not light Deep rotation of the NR control results in audio signal masking or distortion Set the NR control for maximum readability WV Noise reduction OFF Noise reduction activated BAL NR BAL NR Desired signal CW Noise components E Noise blanker The noise blanker eliminates pulse type noise such as from car ignitions The noise blanker is not avail able for FM mode Push the NB switch to turn the noise blanker ON or OFF NB NB amp _ Noise blanker OFF gt Noise blanker ON r Y When using the noise blanker received signals A may be distorted if they are excessively strong N NB switch 27 D RECEIVE AND TRANSMIT E RTTY filter Twin peak filter The transceiver has 5 RTTY filters in addition to nor mal IF filters The passband width can be selected from 1 kHz 500 Hz 350 Hz 300 Hz and 250 Hz When the RTTY filter is turned ON the RTTY tuning meter can be used p 41 Moreover the twin peak filter changes the receive fre quency response by boosting 2 particular frequencies 2125 and 2295 Hz for better copying of desired RTTY signals Push CW RTTY once or twice to select RTTY mode 2 Push RTTY FIL to turn the RTTY filter ON TPF appears when the twin peak filter is turned ON e RTTY filter selection Push EXIT one or more times to close a multi function screen if necessary Select RTTY mode 3
112. ously and correct tuning may not be obtained ANTENNA TUNER OF THE IC PW1 IC 4KL or IC 2KL IC AT500 See the instruction manual included with each an tenna tuner for their respective operations 49 50 6 MEMORY OPERATION E Memory channels The transceiver has 101 memory channels The mem ory mode is very useful for quickly changing to often used frequencies All 101 memory channels are tuneable which means the programmed frequency can be tuned temporarily with the tuning dial etc in memory mode MEMORY MEMORY TRANSFER OVER CHANNEL CHANNEL CAPABILITY TO VFO WRITING CLEAR NUMBER Regular memory E One frequency and one mode in channels ii each memory channel YES Yes Yeg Scan edge One frequency and one mode in memory P1 P2 each memory channel as scan Yes Yes No channels edges for programmed scan E Memory channel selection e Using the A or V keys Push VFO MEMO to select memory mode 2 Push A W several times to select the desired memory channel e Push and hold 4 for continuous selection UP and DN on the microphone can also be used To return to VFO mode push VFO MEMO again 12 00 ESS ca A D VFO GSD Fi 14 95 00 14 106 06 USE VFO MEMO ENS 4k a A 12 00 EIE Fiz 1 LL 10000 UFO 14 195 68 Cli o HD2 4k Ga A 12 00 D 12 FIL2 936000 FO 14 195 68 Ch e Using the
113. pe screen p 44 WFO USE FILE HARKER Uh 100 00 UOTICE RECORDER VOICE REC UOTCE SCAM MIC REC TX LEW SET PLAY TX 15sec L RX 15sec ORDER MENU x ch x ch Mic Record Record check Recorder OutPut Adjust Auto Monitor SET HIC REC Te LEW Programmed scan screen p 57 SEND AF SPan 18kHz EREI gai Programmed Pi 6 500 G8MHz Scan edges P2 29 999 99MHz CW KEY AF FINE AF SFAH SET MEMORY KEYER MENU Max 54 Characters x 4ch Memory Editor 661 Style Contest Number Memo key Elec key Cll Wave Cli KEY Memory channel scan screen p 58 RTTY decoder SCEH screen RTT DE p 41 kkk RTTY New Line Programmed Pi scan edges Decode Monitor 4a 45bPs BAUDOT Mark 2125 Shift 178 UnShift On SPace suPPort SET OTHERS gt Code selectable SET OTHERS If RTTY FIL is OFF Please turn ON AF SFAH SET MEMO AF SELECT Set mode screen p 64 99 Pi 8 P2 29 SET MODE MENU LEVEL DISP TIME OTHERS TR Tone Monitor Side Tone etc Bright Contrast Stule Font etc Clock Timer Oth
114. quelch RFSL RF SQL control as RF squelch control control default the squelch control only RF gain is default fixed at maximum or Auto RF gain control in SSB SQL IRESOLT conol as squelch Sont CW and RTTY squelch control in AM and FM See p 3 for details AUTO RF SQL control as RF gain control in SSB CW and RTTY squelch control in AM and FM When this item is set to ON pushing DUALWATCH for 2 sec sets the sub readout frequency to the main OH OFF Quick dualwatch ON Quick dualwatch OFF readout frequency and activates dualwatch operation default See p 31 for details When this item is set to ON pushing SPLIT for 2 Cr OFF sec sets the sub readout frequency to the main read Quick split ON Quick split OFF out frequency and activates split operation default See p 33 for details E Miscellaneous others set mode continued SET MODE 9 This item sets the offset difference between transmit and receive frequencies for the quick split function However this setting is used for HF bands in FM mode only and is used to input the repeater offset for an HF band The offset frequency can be set from 4 MHz to 4 MHz in 1 kHz steps 6 168MHz Minus 0 1 MHz offset default tu HHAH Minus 4 0 MHz offset This item sets the offset difference between transmit and receive frequencies for the quick split function However this setting is used for 50 MH
115. receive frequency while the RIT and or ATX functions are ON Rotate the control clockwise to increase the frequency or rotate the control counterclockwise to decrease the frequency e The shift frequency range is 9 999 kHz in 1 Hz steps or 9 99 kHz in 10 Hz steps RIT ATX Low shift High shift RIT SWITCH RIT p 34 Turns the RIT function ON and OFF when pushed e Use the RIT ATX control to vary the RIT frequency Adds the RIT shift frequency to the operating fre quency when pushed for 2 sec What is the RIT function 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 ATX SWITCH ATX p 34 Turns the ATX function ON and OFF when pushed e Use the RIT ATX control to vary the ATX frequency Adds the ATX shift frequency to the operating fre quency when pushed for 2 sec v What is the ATX function The ATX shifts the transmit frequency without shifting the re ceive frequency This is useful for simple split frequency op eration in CW etc CLEAR SWITCH CLEAR p 34 Clears the RIT ATX shift frequency when pushed for 2 sec CW PITCH CONTROL CW PITCH outer control p 29 Shifts the received CW audio pitch and monitored CW audio pitch wi
116. round 8 V DC output a GND PTT ground We e NPE Frequency up down LE PTT Main readout squelch switch HM 36 SCHEMATIC DIAGRAM MICROPHONE I 2k 10u f 4700p PANEL DESCRIPTION 2 lol PTT SWITCH Push and hold to transmit release to receive Se FUNCTION DESCRIPTION 8 V DC output Max 10 mA Frequency up Ground 2 Frequency down Ground through 470 Q Squelch open LOW level 2 Squelch closed HIGH level Y CAUTION DO NOT short pin 2 to ground as this 7 Y can damage the internal 8 V regulator MICROPHONE CABLE MICROPHONE PLUG wt MIC I ou ELEMENT jee m RECEIVE TRANSMIT a G 10 2 PANEL DESCRIPTION E LCD display oq _ gt uUFo MEA FIL GM2 4k aaie AA 1 12 00 e FAP x e PAM Sok USE FIL2 G G it UO O HAREE HOLD TX INDICATOR Indicates the frequency readout for transmit VFO MEMORY CHANNEL INDICATOR pgs 23 50 Indicates the VFO mode or selected memory chan nel number SELECT MEMORY CHANNEL INDICATOR p 59 Indicates the displayed memory channel is set as a select memory channel MULTI FUNCTION SWITCH GUIDE Indicates the function of the multi function switches LCD FUNCTION SWITCH GUIDE Indicates the function of the LC
117. se an explosion or electric shock NN 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 Q 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 When using 1 antenna use the ANT1 connector Y CAUTION Protect your transceiver from lightning Z by using a lightning arrestor NS PL 259 CONNECTOR INSTALLATION EXAMPLE 30 mm FE mm Slide the coupling ring aj em mm down Strip the cable a jacket and soft solder Coupling ring 10 mm soft solder 10MM soft Strip the cable as ll soier shown at left Soft solder the center con A 1 2 mm ductor solder it Slide the connector oe TT body on and solder it Screw the coupling gb ring onto the connector body 30mm in 10mm in 1 2 mm ein 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 transis tor 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 756PRO has an SWR meter to monitor the antenna SWR continuously INS
118. sh F 5 TONE for 2 sec to enter the tone fre quency screen Oi dar i REPEATER TONE T S L TONE DEF T SCAH Push F 1 4 or F 2 W to check the repeater tone frequency or tone squelch frequency respec tively pgs 46 47 Push F 5 T SCAN to start the tone scan SCAN flashes while scanning AGC TOHE FREQUENCY REPEATER TOME 188 SZ SCAN N CAN T SGL TONE Z3 NYz TS When the tone frequency is detected the tone scan pauses e The tone frequency is set temporarily on a memory channel Program into the memory channel to store the tone frequency permanently e The decoded tone frequency is used for the repeater tone frequency or tone squelch frequency To stop the scan push EXIT Push EXIT to exit the tone frequency screen 61 8 CLOCK AND TIMERS E Setting the current time The transceiver has a built in 24 hour clock with power off and power on timer functions This is use ful when logging QSO s and so on The clock indica tion is always displayed except after pushing F INP Push EXIT one or more times to close a multi function screen if necessary 2 Push F 5 SET then F 3 TIME to enter timer set mode 3 Push F 1 4 or F 2 W to select the time adjust ment item 12 00 G2 4 Gi PA CED VFO F
119. t the ALC meter reads within the ALC zone whether or not you speak softly or loudly Push COMP momentarily to turn the speech compressor ON Push METER once to select the COMP meter Adjust the COMP control so that the COMP meter reads within 10 dB and 20 dB COMP meter G When the ALC meter peaks above the ALC zone your transmitted voice may be distorted METER switch COMP switch COMP control MIC GAIN control 7 in RF POWER control 37 D RECEIVE AND TRANSMIT Digital voice recorder The transceiver has a total of 8 memory channels 4 each for transmit and receive of digital voice memo ries A maximum message of 15 sec can be recorded in each transmit and receive channels Providing a transmission memory is very convenient for repeated CQ and number transmissions at contest times as well as when making consecutive calls in DX pedition e Recording a received audio Push EXIT one or more times to close a multi function screen if necessary Select a phone mode by pushing SSB or AM FM G Push F 2 VOICE to call up the voice recorder screen fac NE RECORDER id MI VOICE RECORDER MENU OFF COME OFF WIDE PLAY MIC REC TX LEU SET TX 15sec x 4ch RX 15sec x 4ch Mic Record Record check Recorder Output Ad Just Auto Monitor SET PLAY HIC REC Ts LEU SET e Play
120. t the power on time item AGC TIME SET MID Time Now 15 24 Power ON Timer Set EXT WOM Power OFF Period 68min OFF LUI CFF WIDE a Set the desired power on time using the tuning dial TIMER set push SET blinks ET Time Now SINE PowerON Timer Set De Power OFF Period Z BIN 2 TIMER set Push SET Z ar OFF WIDE COMP Push F 4 SET to enter the set time Push EXIT to cancel the setting Push EXIT twice to exit timer set mode 62 E Setting power off period CLOCK AND TIMERS 8 The transceiver can be set to turn OFF automatically after being activated via the power on timer The power off period can be set to 5 120 min in 5 min steps Push EXIT one or more times to close a multi function screen if necessary 2 Push F 5 SET then F 3 TIME to enter timer set mode 3 Push F 1 4 or F 2 W to select the power off time item Time Now 15 24 Power ON Timer Set 19 39 ONF OFF WIDE Set the desired power off time using the tuning dial TIMER set push SET blinks Time Now Power ON Timer Set ANIM D Power OFF Period 45min I HO Vm N TIMER set Push CSET Z _ D i 5 Push F 4 SET to ent
121. the marker is out of range or TX marker marker is out of range Push F 4 HOLD to freeze the current spectrum waveform HOLD appears while the function is in use Push EXIT to exit the scope screen e Spectrum scope during transmitting The spectrum scope shows the transmit signal wave form while transmitting This can be deactivated if de sired When OFF is selected the spectrum scope holds the received waveform while transmitting and does not show the transmit waveform Call up the scope screen as described at left 2 Push F 5 SET to select the spectrum scope set mode 3 Push F 1 to select the Scope during Tx item Rotate the tuning dial to display the spectrum scope while transmitting or not AGC MID BK IN OFF Max Hold ON 144 OFF DEF 5 Push EXIT to exit keyer set mode e Maximum level hold function The spectrum scope shows the peak level holding function Peak levels are displayed in the background of the current spectrum in a different color until the re ceive frequency changes This can be deactivated if desired Call up the scope screen as described at left 2 Push F 5 SET to select the spectrum scope set mode Push F 2 to select the Max Hold item 4 Rotate the tuning dial to turn the peak level holding function ON or OFF SCOPE SET J ScoPe during Tx ON Max H
122. thout changing the operating fre quency NOTCH CW PITCH Lower frequency Higher frequency Approx 300 Hz Approx 900 Hz MANUAL NOTCH FILTER CONTROL NOTCH inner control p 27 Varies the peak frequency of the manual notch fil ter to pick out a receive signal from interference while the manual notch function is ON e Notch filter center frequency SSB 0 Hz to 5100 Hz CW 900 Hz CW pitch freq to 4200 Hz CW pitch freq AM 5100 Hz to 5100 Hz NOTCH CW PITCH Lower frequency vi Higher frequency amp PBT CLEAR SWITCH PBT CLR p 26 Clears the PBT settings when pushed for 2 sec e The PBT CLR indicator appears when PBT is in use NOTCH SWITCH NOTCH p 27 Toggles the notch function between auto manual and OFF in SSB and AM modes Turns the manual notch function ON and OFF when pushed in CW mode Turns the auto notch function ON and OFF when pushed in FM mode AN appears when auto notch is in use MN appears when manual notch is in use What is the notch function The notch function eliminates unwanted CW or AM carrier tones while preserving the desired signal s audio response The filtering frequency is adjusted to effectively eliminate un wanted tones via the DSP circuit NOTCH NOTCH CS Notch OFF CS Notch ON PASSBAND TUNING CONTROLS TWIN PBT Adjust the receiver s passband width of the DSP filter p 26 e Passband width and shift frequenc
123. tig Memory ch select 4 Push M1 M4 one or more times to select the de sired keyer memory channel 5 Select the desired character group by pushing the character group keys ABC 123 etc one or more times Select the desired character by rotating the tuning dial or by pushing the band key for number input e Push F 1 lt or F 2 for cursor movement Push F 3 DEL to delete the selected character e Push F 4 SPACE to input a space ig for contact numbers and can be input for the count up trigger channel amp appears 7 Repeat step until the desired contents are input Push M1 M4 to select the next memory channel and repeat step for character input if desired Push EXIT to exit the memory keyer edit screen e Transmitting memory keyer contents Push CW RTTY to select CW mode 2 Push KEYER to select keyer set mode 3 Push F 1 SEND to enter the memory keyer screen AGC BK IH OFF 1 4 Mi Mz MS mi EL MEMORY KEYER Mi CQ TEST CQ TEST DE ICOM ICOM TEST Quz UR SNNCEN BK mz CFM TU QRZ Push F 1 M1 F 4 M4 momentarily to trans mit the contents one time push these keys for 2 sec to transmit the contents repeatedly e M1 M4 are highlighted while transmitting m appears while transmitting repeatedly e Set the repeat interval of the memory keyer to 1 2 3
124. tio 1 1 3 Rise Time ms Paddle Polarity MIC Up Down Keyer Push F 2 to select the Mic Up Down Keyer item 45 Rotate the tuning dial to turn the substitute paddle function ON or OFF e The up down keys of the microphone can be substi tuted for a paddle When ON is selected they do not function as up down keys in all modes Push EXIT to exit keyer set mode KEYING WEIGHT EXAMPLE Morse code K DOT DASH Fixed DASH Weight setting 1 1 3 default _ Weight setting i Fan 7 i Adjusted _ asl a SPACE Fixed Adjustable range SPACE and DOT length can be adjusted with KEY SPEED only 42 E Memory keyer RECEIVE AND TRANSMIT 9 The memory keyer memorizes and can re transmit 4 CW key codes for often used CW sentences antenna types etc Total capacity of the memory keyer is 54 characters in each memory channel Programming the memory keyer Push CW RTTY to select CW mode 2 Push F 2 KEYER to select keyer set mode 3 Push F 2 EDIT to enter the memory keyer edit screen ENS EM NX 12 00 D VFO GEN FIL2 x 14 168 08 USE UFO CW FIL2 IU 0S 00 1 14 188 08 USB Selected _ ABC au KEVER EDIT Du LG TEST DE ICOM ICOM n a BK Character sec 2 group mz CFM TU keys 123 M4 ORZ 4 DEL SPACE Hi
125. tting 2 PANEL DESCRIPTION E Front panel continued RIT ATX CLEAR la Na amp O oa a ea g O EJE 7 4 5 c ET CC Cuer FA CJ D S SE CE CE 5 CE F 2 On E D 000 Sent COMP KEY SPEED BK IN DELAY LCD FUNCTION DISPLAY See p 10 for details Shows the operating frequency function switch menus spectrum screen memory channel screen set mode settings etc MEMORY UP DOWN SWITCHES 4 p 50 Select the memory channel number for the se lected readout Memory channels can be selected both in VFO and memory modes Select the desired memory channel directly after pushing F INP and a memory channel number MEMORY WRITE SWITCH MW p 52 Stores the selected readout frequency and operat ing mode into the displayed memory channel when pushed for 2 sec This function is available both in VFO and memory modes MEMORY CLEAR SWITCH M CL p 54 Clears the selected readout memory channel con tents when pushed for 2 sec in memory mode e The channel becomes a blank channel e This switch does not function in VFO mode QUICK TUNING SWITCH TS p 25 Turns the quick tuning step ON and OFF While the quick
126. tting with the tuning dial e For ham band use Push the desired band key on the keypad 1 3 times 3 different frequencies can be selected on each band with the band key See Triple band stacking register below k Gi c e GEESE Fi 2 1200 00 21 076 560 Chi Rotate the tuning dial to set the desired frequency CII mi Gam LA 12 00 OLUF GEE Fi 2 1295 00 21 076 56 Chi 3 Select the desired operating mode with the mode switch p 26 WS e For general coverage receiver use Push GENE on the keypad 1 3 times e The GENE key calls up a frequency for general cov erage receiver use 12 00 k Gi o GUO EEB FIL 15 100 00 21 876 58 Cli Rotate the tuning dial to set the desired frequency e For quick tuning use the quick tuning step function p 25 2 4 Gi LA DUFO EER FL 1 21 076 55 12 00 3 Select the desired operating mode with the mode switch p 26 Z If the dial lock function is activated the lock indicator lights and the tuning dial does Z not function In this case push LOCK to deactivate the lock function TRIPLE BAND STACKING REGISTER The triple band stacking register provides 3 memories in one band 3 sets of a frequency and mode on each band are automatically stored when used If a band key is pushed once the frequency and mode last used are called up When the key is pushed again another stored frequ
127. tuning indicator is displayed the fre quency can be changed in programmed kHz steps 0 1 1 5 9 10 12 5 20 and 25 kHz quick tuning steps are available Quick tuning indicator 12 00 Emz i Gi TD WFO FILZ 4 14 100 00 21 876 58 Cl While the quick tuning step is OFF turns the 1 Hz step ON and OFF when pushed for 2 sec 1 Hz indications appear in both readouts and the fre quency can be changed in 1 Hz steps While the quick tuning step is ON enters the quick tuning step set mode when pushed for 2 sec TRANSMIT FREQUENCY CHECK SWITCH XFC Monitors the transmit frequency when pushed and held when the split frequency function is ON While pushing this switch the transmit frequency can be changed with the tuning dial keypad memo pad or the A W switches When the split lock function is turned ON pushing XFC cancels the dial lock function p 69 E Microphone HM 36 UP DOWN SWITCHES UP DN Change the selected readout frequency or memory channel e Continuous pushing changes the frequency or memory channel number continuously e While pushing XFC the transmit readout frequency can be controlled while in spilt frequency operation e The UP DN switch can simulate a key paddle Preset in the keyer set mode p 42 e MICROPHONE CONNECTOR Front panel view Main readout AF output varies with AF BAL Microphone input GND ADS Microphone g
128. vanced tuning functions 25 SUPPLIED ACCESSORIES The transceiver comes with the following accessories DC power cable OPC 025D Hand microphone HM 36 3 Spare fuses FGB 30 A 4 Spare fuse FGB 5 A a s na1010101 CW keyer plug AP 330 TABLE OF CONTENTS E Mode selection E Twin PBT operation E Notch function E Noise reduction ones E Noise blanker E RTTY filter Twin peak filter 28 E CW reverse mode E RTTY reverse mode eaesnaee 28 E CW pitch control assecc 29 E IF filter selection PITANA 29 E AGC function 00 cece 30 E Dualwatch operation 31 E Split frequency operation 32 E Quick split function E RIT and ATX eee HM Monitor function E VOX function ae E Meter function E SWR reading ceecee E Speech compressor E Digital voice recorder E RTTY decoder a i E RTTY tuning meter E Electronic CW keyer E Memory keyer nasasa E Spectrum scope screen E Automatic antenna selection 45 E Dial lock function E Repeater operation s s E Tone squelch operation E Antenna tuner operation E Optional external tuner Operation heeii onaniaa 49 6 MEMORY OPERATION 50 55 E Memory cha
129. vary depending on the operating condition FILTER SWITCH FILTER Selects one of 3 IF filter settings Enters the filter set mode when pushed for 2 sec EXIT SWITCH EXIT Exits from a set mode etc when pushed SPEECH SWITCH SPEECH pgs 71 73 Announces the selected readout frequency when an optional UT 102 is installed TUNING DIAL p 24 Changes the displayed frequency selects set mode items etc MAIN SUB SWITCH MAIN SUB Selects the main or sub readout for access e The sub readout frequency is displayed in outline or mesh font The sub readout functions only during split operation or dualwatch VFO MEMORY SWITCH VFO MEMO Toggles the selected readout operating mode be tween the VFO mode and memory mode when pushed pgs 23 50 Transfers the memory contents to VFO when pushed for 2 sec p 53 CW RTTY MAIN SUB CHANGE SWITCH CHANGE Toggles the frequency and selected memory channel between main and sub readouts when pushed e Toggles between transmit frequency and receive fre quency when the split frequency function is ON p 32 Equalizes the sub readout frequency to the main readout frequency when pushed for 2 sec MULTI FUNCTION SWITCHES Push to select the functions indicated in the LCD display to the right of these switches Functions vary depending on the operating condition Toggles the antenna connector selection between ANT1 R and ANT2 R when pushed p
130. vel Limit ON CHP Beep Level beet 1 50 WIDE Beep Level Limit ON T DEF E VOX function 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 e Using the VOX function D Select a phone mode SSB AM FM 2 Push VOX to turn the VOX function ON or OFF e Adjusting the VOX function Select a phone mode SSB AM FM 2 Push VOX to turn VOX function ON 3 Push VOX for 2 sec to enter VOX set mode Select the VOX gain item using F 1 or F 2 While speaking into the microphone rotate the tuning dial to the point where the transceiver is continuously transmitting Adjust the VOX delay for a convenient interval be fore returning to receive Select the VOX delay item using F 1 or F 2 Rotate the tuning dial If the receive audio from the speaker toggles to transmit adjust the anti VOX to the point where it has no effect VOX switch in phone modes xl ri EN ik Ga A 12 00 D VFO FILZ 14 195 00 14 169 06 USE A a u on a UFO USB FILZ U 2Os5 0 0 14 106 68 USE ap OD BD 33 D 30 74 a FN Wo VOX Delay OH 2 COMP GFF WIDE m T
131. y are displayed in the LCD e Push PBT CLR for 2 sec to clear the settings when not in use e Variable range is set to the half of the IF filter passband width 25 Hz steps and 50 Hz steps are available These controls function as an IF shift control while in AM mode and when the RTTY filter is turned ON Only the inner control may function in this case What is the PBT control General PBT function electronically narrows the IF passband width to reject interference This transceiver uses the DSP circuit for the PBT function TWIN PBT TWIN PBT TWIN PBT q TWIN PBT Low cut Center High cut LOCK INDICATOR LOCK p 45 Lights when the dial lock function is activated PANEL DESCRIPTION 2 MEMO PAD READ SWITCH MP R p 55 Each push calls up a frequency and operating mode in a memo pad The 5 or 10 most recently programmed frequencies and operating modes can be recalled starting from the most recent The memo pad capacity can be expanded from 5 to 10 in set mode for your convenience p 71 KEYPAD Pushing a key selects the operating band GENE selects the general coverage band Pushing the same key 2 or 3 times calls up other stacked frequencies in the band p 24 lcom s triple band stacking register memorizes 3 fre quencies in each band After pushing F INP enters a keyed frequency or memory channel Pushing F INP ENT or A V is necessary at the
132. y name is not dis default played E Display set mode continued SET MODE 9 Your call sign etc can be displayed in the opening screen when turning power ON Up to 10 characters can be programmed Capital letters numerals some symbols and spaces can be used Push EXIT one or more times to close a multi function screen if necessary 2 Push F 5 SET then F 2 DISP to select the dis play set mode screen 3 Push F 2 one or more times to select the My ya Call item DISPLAY SET J MID Bright lt LCD mm 1 50x Horizon mm 1 4 Back light Switches mmm 8 OFF Display Type A DisPlay Font Basicl OEE Memory Name ON WIDE a F EDIT WIDE Push F 4 EDIT to edit A cursor appears and blinks 5 Input the desired character by rotating the tuning dial or by pushing the band key for number input Push ABC to select capital letters Push 123 or etc to toggle numerals and symbols Push F 1 4 or F 2 for cursor movement Push F 3 DEL to delete the selected character Push F 4 SPACE to input a space Push EXIT to input the set name e The cursor disappears Push EXIT to exit the set mode screen Opening screen example ft NOW CALIBRATING DIGITAL SIGNAL PROCESSOR PLEASE WAIT FOR 10sec Select
133. z band FM mode only and is used to input the repeater offset for the 50 MHz band The offset frequency can be set from 4 MHz to 4 MHz in 1 kHz steps 1 BEEMHz Minus 1 0 MHz offset default 4 ARRMH Plus 4 0 MHz offset When this item is ON the tuning dial can be used to adjust the transmit frequency while pushing XFC even while the lock function is activated See p 32 for split frequency operation details OH Split lock function ON OFF Split lock function OFF default The internal antenna tuner has an automatic start ca pability which starts tuning if the SWR is higher than 1 5 3 When OFF is selected the tuner remains OFF even when the SWR is poor 1 5 3 When ON is se lected automatic tune starts even when the tuner is turned OFF OH Automatic tuner start ON OFF Automatic tuner start OFF default Tuning of the internal antenna tuner can be started automatically at the moment the PTT is pushed after the operating frequency is changed more than 1 from last tuned frequency OM Automatic PTT start ON OFF Automatic PTT start OFF default Q SET MODE E Miscellaneous others set mode continued You can set the antenna connector selection to auto matic manual or non selection when using 1 an tenna only When Auto is selected the antenna switch is acti vated and the band memory memorizes the selected

SET MODE

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