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Kenwood TS-440S Wheelchair User Manual

1. YK 88CN CW NARROW FILTER Center frequency 8 830 7 kHz Passband width 270 Hz 6 dB Attenuation bandwidth 1 1 kHz 60 dB Guaranteed attenuation More than 80 dB YK 88CN YK 88SN SSB NARROW FILTER Center frequency 8 830 0 kHz Passband width 1 8 kHz 6 dB A ttenuation bandwidth 3 3 kHz 60 dB Guaranteed attenuation More than 80 dB YK 88SN YK 88S SSB FILTER Center frequency Passband width Attenuation bandwidth Guaranteed attenuation 8 830 0 kHz 2 4 kHz 6dB 4 2 kHz 60 dB More than 80 dB 27 OPTIO FILTER COMBINATION MODE Terminal connection SELECTIVITYI POSITION I USB LSB cw FSK AM 6 kHz FM White lead AUTO M1 I M2 i I W AUTO N M1 M2 W AUTO N M1 M2 W AUTO N M1 M2 W 2 2 kHz No sound from the speaker No optional filter 12 kHz WIDE WIDE YK 88S 12 kHz SSB SSB 2 2 kHz s r t 6 kHz 2 1 kHz No sound from the speaker 2 1 kHz 2 2 kHz 6kHz 1 8 kHz o sound from the speaker 1 8 kHz 2 2 kHz 6 kHz r 500 Hz 500 Hz No sound from the speaker 2 2 kHz f 6kHz 11 270Hz YK 88SN 12 kHz sse SSB 2 2 kHz YK 88C 12 kHz cw WIDE 2 2 kHz 6 kHz YK 88CN 12 kHz cw WIDE YK 88S and YK 88C 12 kHz cw SSB 2 1 kHz YK 88S and YK 88CN 12 kHz cw SSB 1 8 kHz YK 88SN and YK 88C 12 kHz cw
2. 500 is required This can be achieved by using an antenna matching device or coupler Fig 10 1 43 J The antenna to be used should first be checked with a dip meter to insure that it is designed for your oper ating band then the impedance matching should be checked with an SWR meter Fig 10 3 The VSWR should preferably be less than 1 5 1 for stisfactory operation For antenna adjustment refer to the antenna instruction manual 4 Antenna matching In general mobile antennas have a lower impedance than the 50 ohm coaxial cable used to feed them resulting in a mismatch between the antenna and the coax Such trouble can be eliminated by using an an tenna tuner between the transceiver and the coaxial cable 0 Matching circuit examples 10 2 MOBll OPERATION 10 2 1 Installation Route battery and ANTENNA leads away from all high voltage secondary circuits to prevent ignition noise in terference Loading coil Antenna bracket must have good metal to metal contact j To antenna terminal Antenna I Co I contact bracket Since an HF antenna is large and heavy it must be installed to with stand high wind stress Pass coaxial cable through the drain hole grommet Example of power cord wiring Fig 10 4 44 Antenna DraCKet must 10 2 2 Noise reduction In motor vehicles noise is generated by the ignition system Other so
3. When charging your vehicle battery or when jump starting a dead battery ALWAYS disconnect the power cable from the back of the transceiver or damage may result to the transceiver Connect the TS 440S power cable to the battery ter minals with consideration to current requirements and noise prevention The maximum current drawn by the TS 440S reaches between 18 and 20A when trans mitting Therefore the cable should be made as short as possible using the specified fuse Also confirm that the power system of the car including the battery and generator or alternator will handle the increased load of the TS 440S 2 2 4 Key connection Your key should be connected as illustrated in the figure below When using an electronic keyer make sure that polarity is set for positive Always use shield ed line from the key to transceiver e mum Fuse Use short heavy leads be as close to the battery terminal as possible 1 2V Battery 2 3 MOBILE Being compact in design this transceiver is ideal for mobile operation Satisfactory mobile operation is achieved through proper power and antenna connec tion and thoughtful transceiver installation and ad justment 2 3 1 Mounting bracket installation Secure the TS 440S under the dashboard using an op tional MB 430 mounting bracket As an alternative use strapping making sure that the TS 440S will n
4. channel is displayed press the M IN key again The current frequency and mode will be stored the scroll mode will be cancelled and the T5 4405 will return to the oper ating mode and frequency that was displayed be fore the M IN key was pressed initially Note that if RIT was selected prior to step 2 the actual fre quency stored will be the indicated frequency plus or minus the RIT variable 3 6 2 Transferring memory information to the VFO 1 Press the VFO M key to select the memory mode I j f r 3 6 1 Memory Entry 1 With the TS 440S in the VFO mode select the desired operating frequency and mode as described in previous sections 2 Select a channel using any of the methods dis cussed under the Memory Entry section I VF I l I_I 2 Press the M IN switch The radio will enter the Memory Scroll M SCR mode The current memory channel number M CH frequency and mode will be displayed but the actual operating frequency and mode will remain unchanged allowing uninter rupted reception 3 Press the M V key The stored data will be trans ferred to the active VFO allowing you to begin tun ing from that point The TS 440S automatically returns to the VFO mode when the M V key is depressed CH i j t a I A U J 0 0 II II 1 L _ U 3 Select the desired memory channel using one of the th
5. sse T 6 Hz 1 8 kHz YK 88SN and YK 88CN 12 kHz cw sse 500 Hz 6 kHz YK 88C and YK 88CN 12 kHz cw 55B 500 Hz 6 2 VOICE SYNTHESIZER UNIT VS 1 INSTALLATION 1 Remove the top cover from the radio 2 Remove the two screws on the rear of the IF unt and raise the unit to allow access to the PLL unit 3 Install the VS 1 in the area at the left rear of the PLL unit using the three screws provided with the VS 1 4 Install the 3 pin plug on connector JO1 and the a pin plug on connector JO2 5 Select the desired language that you want with switch S 1 on the VS 1 ENG for English or JA for Japanese 6 Install the 4 pin plug on connector 05 the IF unit 7 Reverse step 1 2 8 Turn on the power switch and press the VOICE switch The frequency will be announced Adjust VR 1 for the desired audio output level 28 Programming and recall of VFO A and VFO B fre quency MR Memory Recall and M IN Memory Input Microphone UP DOWN frequency control disable Control of the F LOCK switch Memory channel selection MODE selection Control of RIT XIT Selection of RIT XIT frequency Scan operation Review of transceiver status 6 3 1 Installation 1 Remove the top and bottom covers from the radio 2 Remove the countersink screws 2 on each side that secure the front panel to the chassis and gently pull the front panel forwards 3 Remove the 5 small roun
6. frequency b Enter a two digit channel number using the nu meric keypad being sure to include the leading zero for channels 00 through 09 Pressing the CLEAR key or the standby switch before press ing the second digit will return you to the origi nal channel J A VFa I I I _ _ 3 6 MEMORY The TS 440S incorporates a convenient 100 channel memory that can be used to store and recall common ly used frequencies These channels can be subdivid ed into 10 user defined groups to tailor the TS 440S for optimum operation in a particular application You can for instance assign channels 10 through 19 to the 160 meter band channels 20 through 29 to the 80 meter band channels 30 through 39 to the 40 meter band LSB channels 40 through 49 to the 20 meter band USB channels 50 through 59 to the 15 meter band channels 60 to 69 to the 10 meter band FM channels 70 through 79 to the 12 meter band and channels 80 through 89 to various shortwave bands Channels 90 through 99 could then be assigned as split frequency channels After completing channel assignments you can then use the convenient memory scan function to automatically recall the stored fre quencies on a group basis c Use the UP DOWN switches and or microphone UP DOWN switches to scroll thru the different memory positions 5 When the desired memory
7. made AFSK IN terminal AFSK input terminal VOX GAIN 6 AFSK OUT terminal Constant level AF output terminal for AFSK operation CD ACC 1 jack This jack is designed for connection of the 6 pin DIN connector supplied with the optional interface unit ANTI VOX control vox operations are sometimes difficult with high speaker volume control settings The ANTI VOX con trol is used to reduce the tendency of the VOX to acti vate from inputs from the speaker The ANTI VOX control is not active when headphones are connect ed for obvious reasons EXT SP External speaker jack This jack is for connection of an external speaker DC power connector This is used to connect the DC power supply KEY jack Using shielded line connect a 1 4 phone plug to this jack for CW operation Open terminal voltage is approx imately 5 5 VDC DELAY control This control adjusts the hang time that the radio will remain keyed after voice input has stopped DELAY j ANT Antenna connector This UHF connector should be attached to a suitable anten a for transmitting and receiving The antenna ca ble should be 50 ohm coax terminated with a PL 259 connector GND Ground terminal To prevent electric shock as well as RFI and BCI con nect the transceiver to a good earth ground 10 ACC 2 jack Terminal numbers and
8. the HET OSC frequency of 36 22 MHz to obtain the 2nd IF frequency of 8 83 MHz The 2nd IF frequency is split into two paths one to the noise blanker circuits and the other past the noise blanking gate to the 2nd IF filter The signal that is taken from the output of the 2nd IF filter is applied to the 3rd RX mixer via a buffer amplifier where it is mixed with the local oscillator frequency of 8 375 MHz to obtain the 3rd IF frequency of 455 kHz 20 5 formation in the space provided on the back cover of this manual Service note Dear OM if you desire to correspond on a technical or operational problem please make your note short complete and to the point And PLEASE make it readable Please list Model and serial number The question or problem you are having Please give sufficient detail to diagnose other equip ment in the station meter readings and anything you feel might be useful in attempting diagnosis 5 1 GENERAL INFORMATION Your transceiver has been factory aligned and tested to specification before shipment Under normal circum stances the transceiver will operate in accordance with these operating instructions All adjustable trimmers and coils in your transceiver were preset at the facto ry and should only be readjusted by a qualified techni cian with proper test equipment Attempting service or alignment without factory authorizat
9. 0 1 Ensure that your terminal is set up for AFSK type keying 2 Connect the terminal units AFSK output jack to TS 440S AFSK IN jack and the terminal unit s AFSK input jack to the TS 440S AFSK OUT jack on the rear panel of the transceiver The terminal units standby PTT terminal should be connected to the standby terminal on the REMOTE connector Initial linear amplifier tune up should be performed with the TS 440S set for approximately 50 watts output to reduce wear and tear on both the linear and the TS 440S Use of a dummy load is strongly recom mended since the bands are already sufficiently crowded 19 4 This 3rd IF frequency is either amplified and then demodulated by the FM detector IC for FM operation or applied to the 455kHz filter After filtering the sig nal is amplified and applied either to the SSB or AM detector circuits 4 4 CIRCUIT BOARD DESCRIPTION The TS 440S contains the following major units RF unit IF unit Control unit PLL unit Filter unit AT unit etc A brief description of these units follows 4 1 GENERAL DESCRIPTION The TS 440S utilizes double conversion for FM trans missions and triple conversion for all other transmis sion modes and for all modes in receive The intermediate frequencies are 45 05 MHz 8 83 MHz and 455 kHz A wide dynamic range is made possible thru the use of 2SK 125 j
10. HAND MICROPHONE The MC 42S is handy dynamic microphone with PTT switch and UP DOWN switches AT 230 ANTENNA TUNER The AT 230 Antenna Tuner covers 160 through 10 meters bands LF 30A LOW PASS FILTER AT 130 ANTENNA TUNER The AT 130 Antenna Tuner covers 80 through 10 meters bands AT 250 MC 60A PS 50 MC 85 MC 55 PS 430 MC 80 MC 42S 30 SP 41 COMPACT MOBILE SPEAKER 4 ohms MB 430 MOBILE MOUNT The Mobile Mount MB 430 allows easy installation and removal of the TS 440S The MB 430 can either be suspended from the dashboard or attached to the transmission tunnel or a center console The tran sceiver tilt angle can be adjusted 5 steps TL 922A TL 922 HF LINEAR AMPLIFIER Not for aSK operation The TL 922A 922 is an HF linear amplifier operating at maximum legal power and employing a pair of 3 500l high performance transmitting tubes TL 922A without 10 meter band is available only in U S A PG 2C DC POWER CABLE MA 5 5 BAND HELICAL TYPE HF MOBILE ANTENNA SM 220 STATION MONITOR Built around a basic 10 MHz oscilloscope the SM 220 station monitor features in combination with a built in two tone generator a variety of waveform observing capabilities VP 1 BUMPER MOUNT FOR MA 5 SP 430 EXTERNAL SPEAKER The SP 430 is an attractive compact external speak er This low distortion speaker provides clear reproduc tion o
11. HF TRANSCEIVERTS 440S KENWOOD CORPORATION PRINTED IN JAPAN B50 8048 30 K M T W 89 121110987654321 88 12111098 Thank you for purchasing the new TS 440S tran sceiver Please read this instruction manual carefully before placing your transceiver in service This unit has been carefully engineered and manufactured to rigid quality standards and should give you satisfactory and dependable operation for many years This Instruction Manual covers the TS 440S with and without AT Automatic Antenna Tuner unit When there are differences in operation separate instructions will be given for each model Illustrations show the TS 440S with AT unit The following explicit definitions apply in this manual Note If disregarded inconvenience only no risk of equipment damage or personal injury Caution Equipment damage may occur but not per sonal injury CONTENTS 1 FEATURES 3 4 CIRCUIT DESCRIPTION 20 2 INSTALLATION 4 4 1 GENERAL DESCRIPTION 20 2 1 PRECAUTIONS 4 4 2 TRANSMITTER SECTION 20 2 2 FIXED STATION 4 4 3 RECEIVER SECTION 20 2 2 1 Interconnection 4 4 4 CIRCUIT BOARD DESCRIPTION 20 2 2 2 Grounding 4 4 4 1 RF unit X44 1680 00 20 2 2 3 Antenna 5 4 4 2 IF unit X60 1300 00 20 2 2 4 Key connection 5 4 4 3 Control unit X53 1450 00 20 2 3 MOBILE 5 4 4 4 PLL unit X50 2050 00 20 2 3 1 Mounting bracke
12. On occasion an electronic keyer may be used that has no method of producing a continuous trans mit condition In order to obtain a continuous car rier for tuning simply place the Standby switch to the SEND position 3 3 3 FM mode Select the desired frequency within the 28 MHz amateur radio band Place the MODE key to FM and the Meter switch to ALC ALC zone ALC PWR SWR c m 1 J Press the microphone PTT switch or place the Stand by switch to SEND Adjust the CAR control until the meter deflection is within the ALC zone This will provide full pqwer in the FM mode SEMI and FULL break in Two break in methods are provided with the TS 440Stransceiver SEMI and FULL break in With either break in operation depressing the CW key will cause the ra dio to transmit without the need for manually switch ing the SEND REC switch The difference between FULL and SEMI break in is that during FULL break in operation it is possible to listen between dots and dash es and that during SEMI break in it is not Note With either SEMI or FULL break in operation cross band cross mode operation is not possible Addition ally when you are using FULL break in operation you should not work cross band splits only in the same band To decrease the power place the Meter switch to PWR and while observing the meter rotate the CAR control counterclockwise until the
13. Optional 10Hz display resolution If you would like 10Hz resolution instead of the sup plied 100 Hz display resolution cut 066 as shown on the Control unit 5 8 3 Digital display calibration 1 Removing the top cover filter unit cover and the bottom covers from radio and place the radio on its side with the antenna tuner area down 2 Remove the two screws that secure the rear of the IF unit to the chassis and raise the IF unit up towards the front panel Connect the two pin end of the supplied calibration cable to connector num ber 8 on the PLL unit as shown in the figure 3 Connect the single pin end of the cable to the CAL terminal pin that is located along the back edge of the RF unit near the large shielded area 4 Connect your antenna and tune to WWV 5 Using a small flat bladed screwdriver adjust trim mer capacitor TC 1 near connector 8 of the PLL unit for zero beat Zero beat is the point where the two audio tones are oscillating at the slowest rate 1 Remove the top and bottom covers from the radio 2 Remove the countersink screws 2 on each side that secure the front panel to the chassis and gently pull the front panel forwards 3 Remove the 5 small round head screws that secure the shield plate 2 on the top and 3 on the bottom to the front panel and remove the shield plate 4 Cut the lead of diode 066 located below the dip switch on the control unit 5 Rever
14. PLY The PS 430 is a regulated DC power supply with high current capability The output is 13 8 VDC 20 A in termittent Since terminals for 13 8 VDC 1 0 A are also provided in addition to an output power cable for use with the TS 440S the PS 430 can be used as the pow er source for another low power mobile transceiver such as a 2 meter rig MC 80 MICROPHONE 8 pin The MC 80 is an omnidirectional electret condenser microphone provided with UP DOWN switches volume adjustment for output level PTT and LOCKswitches built in pre amplifier MC 60A MICROPHONE S pin The zinc die cast base provides high stability and the MC 60A is complete with PTT and LOCK switches UP DOWN switches and impedance selector switch and a built in pre amplifier AT 440 AUTOMATIC ANTENNA TUNER UNIT The AT 440 Automatic Antenna Tuner unit can be in stalled in the TS 440S The tuner covers all amateur bands from 80 through 10 meters including the new WARC bands Matching capability is 20 to 150 ohms unbalanced MC 55 MOBILE MICROPHONE 8 pin The MC 55 provides UP DOWN switches LED display for switching transmit or receive adjustable micro phone gain automatic receive returning circuit approx 5 minutes and many functions AT 250 AUTOMATIC ANTENNA TUNER The AT 250 Automatic Antenna Tuner covers 160 through 10 meters bands MC 42S UP DOWN
15. VFO will be set to the RIT XIT variable specified when the data was programmed in to memory Note j The TS 440S microprocessor remembers the variou scan parameters that you have specified and will fol low whatever you have entered the next time you press the SCAN key In example 1 we want to scan only Group 2 so we would press the 2 key In example 2 we want to scan Group 1 and Group 2 so we would press the 1 key and then the 2 key Example 1 Example 2 Group 2 Group 1 Group 2 Example 1 Memory mode Previously programmed memory scan data was to scan channels 20 29 and 40 49 To scan this same range again simply press the SCAN key Example 2 VFO mode Previously entered program scan data was to scan both PG S1 and PG S2 To initiate program scan over these two ranges again simply press the SCAN key I M 1 oJ GH1U L H1II lJM CH3U t 4 You can stop scanning or resume scan using the same methods described above for the entire memory scan 3 7 2 Program scan Two programmable scan ranges are provided on the TS 440S transceiver PG S 1 Program Scan range 1 utilizes memory channels 06 and 07 to specify the up per and lower scan limits PG S 2 Program Scan range 2 utilizes memory channels 08 and 09 to specify the upper and lower scan limits The TS 440S will continue to execute scan according to the above pa
16. ange New advances in circuit design have made a 102 dB dynamic range 500 Hz IF bandwidth possible 9 Switchable AGC time constant A switch is provided to select either FAST or SLOW AGC action 10 All mode squelch 11 Built in RF power SWR meter 2 General coverage reception from 100 kHz to 30 MHz In addition to transmission and reception on all amateur bands from 1 8 to 28 MHz the TS 440S provides a continuous tuning general coverage receiver with a range of 100 kHz to 30 MHz 3 Automatic antenna tuner The optional built in automatic antenna tuner will oper ate from 3 5 to 28 MHz 4 All mode operation USB LSB CW AM FM and AFSK modes are provided 5 100 continuous duty transmit Transmission at a 100 duty cycle is possible for rela tively long durations one hour or less in any mode including FM and AFSK 6 CW full break in Full break in operation is possible in the CW mode Rapid transmit receive switching also makes the radio suitable for data communications in the SSB mode such as AMTOR 7 Build in XIT XIT Transmitter incremental tuning allows fine tun ing of the transmitter frequency 12 Versatile frequency control Accurate frequency selection is possible due to the use of a single reference oscillator circuit Continuous tuning of all frequencies thru the use of digital VFO technology The basic 10Hz step tun ing rat
17. are provided SW 2000 SWR POWER METER SWR POWER meters cover 1 8 54 MHz in range of 0 200 2000 W full scale for base station use HS 4 COMMUNICATIONS HEADPHONES 8 OHMS SW 200A SWR POWER METER SW 200 A supplied with SWC 1 Selectable Peak reading RMS SWR POWER meters cover 1 8 150 MHz in range of 0 20 200 W full scale for base sta tion use SW 100A SWR POWER METER Compact and lightweight SWR POWERNOL T meters cover 1 8 150 MHz in range of 150 W full scale for mobile use f HS 6 HS 5 32 9 9 1 SPECIFICATIONS 41 T91 0352 05 E30 1638 05 E31 2154 05 F05 2034 05 K23 0712 04 E07 0751 05 B50 8048 20 1 pc 1 pc 1 pc 1 pc 1 pc 1 pc 1 copy 1 copy 9 2 ACCESSORIES Dynamic microphone Except Europe and U K DC power cable assembly Calibration cable Fuse 20A Knob DIN plug 7 pin Instruction manual Warranty card 42 10 REFERENCE 10 1 2 Mobile 1 Antenna Use a sturdy mount for the mobile antenna since HF antennas are larger and have more wind load and are heavier than VHF antennas A bumper mount is recom mended for general use The ground side of the mount must be well grounded to the car body since the body itself functions as the ground plane for the mobile an tenna Refer to Fig 10 4 10 1 Antenna installation 10 1 1 Fixed station For HF fixed station operation an antenna spe
18. between 1 and 3 99999 MHz or two leading zeros for frequencies between 0 1 and 0 99999 MHz 03 500 00 MHz 3 3 TRANSMIT 3 3 1 SSB USB LSB mode 1 Set the MODE keys to USB or LSB By internation al convention frequencies below 10 MHz utilize the LSB Lower Sideband mode and frequencies above 10 MHz use USB Upper Sideband The ac tual switchover point on the TS 440S is 9 5 MHz The TS 440S will select the proper mode when you tune to the desired frequency You can override this by simply pressing the desired mode key 0 3 J 4 After the last digit has been entered press the ENT key again to signify you want the radio to change frequency If you entered the frequency down to the nearest 10Hz a beep will sound and the radio will automatically change to the new frequency without the need of pressing the ENT key for the second time 2 Set the Meter switch to ALC ALC PWR SWR C DJ r J i A v a t 1ir II _ LI 3 Press the microphone PTT switch or set the Stand by switch from REC to SEND 4 Speak into the microphone and adjust the MIC gain control so that the meter deflection does not ex ceed the ALC zone on voice peaks For example To enter 14 200 00 MHz there are two methods Method one Press ENT 1 4 2 ENT Method two ENT 1 4 2 0 0 0 0 Note Adj
19. cifically designed for amateur operation is recommended An tenna types include wire antennas verticals rotary beams and other antenna types Fig 10 1 HF anten nas are quite large and must be installed to withstand strong wind heavy rain etc Any antenna used with the TS 440S should be of 50 ohm impedance and should be connected using an appropriate coaxial cable such as RG 8 U Impedance matching is important Impedance mis matching will result in a high VSWR and power loss or can cause unwanted harmonic radiation and inter ference TVI BCI The impedance match can be checked with an SWR meter Generally satisfactory operation is assured when the VSWR Voltage Standing Wave Ratio is less than 1 5 1 A rotary beam antenna is very effective for OX com munication in the 14 21 and 28 MHz bands Fig 10 2 If open wire or balanced type transmission line is used with the antenna a suitable antenna tuner with balun is recommended between the transceiver and the feed line Methods of construction and operating such tuners are described in detail in the ARRL Antenna Handbook or similar publications For operation on the 160 75 and 40 meter bands a simple dipole antenna cut to resonance in the most used portion of the band will perform satisfactorily For operation on the 10 15 and 20 meter bands the efficiency of the station will be greatly
20. d head screws that secure the shield plate 2 on the top and 3 on the bottom to the front panel and remove the shield plate 4 Install the IC s into the vacant sockets on the Con trol unit Orientation of this component is critical for proper operation of the radio and interface Caution Install the IC s so that the notch in the end is on the same end as the notch in the IC socket Control unit IC54 IC55 uPD8251AC NEC or equivalent TC4040BP Toshiba or equivalent 5 Reverse steps 1 3 to reassemble the radio Caution Do not pinch and stretch any wires 6 3 INTERFACE IC KIT IC 10 INSTALLATION Installing the optionallC 1 0 kit will allow control of the radio from a personal computer The following opera tions are possible 6 3 2 Operation Refer to the instruction manual provided with the IC 1 0 Interface IC Kit 29 MC 85 MICROPHONE 8 pin The MC 85 is a unidirectional high class electret con denser microphone provided with the output selective switch audio level compensation circuit low cut filter level meter PTT and LOCK switches An 8 pin cable is provided with optional cables up to three outputs are possible 6 4 OTHER ACCESSORIES PS 50 HEAVY DUTY DC POWER SUPPLY Designed to match the TS 440S Supplies regulated 13 8 VDC at 20 A with built in cooling fan and pro tection circuits for maximum relliability PS 430 DC POWER SUP
21. d receiving on another This is done in order for the OX station to be able to recog nize the calls of stations during pile ups Older transceivers required the use of an external VFO to allow this split frequency operation The TS 440S thru the use of microprocessor controls effectively pro vides two separate VFOs in the same package Several different controls and switches have been provided to increase the operators convenience when faced with this type of operation The use of these controls is dis cussed below 3 3 4 AM mode 1 Set the Meter switch to PWR 2 Set the MODE key to AM 3 Place the Standby switch to SEND 4 Adjust the CAR control so that the meter indicates 25 watts 5 Place the Meter switch to ALC 6 Adjust the MIC gain control so that the meter deflection does not exceed ALC zone on voice peaks 3 5 2 Split frequency a A B switch Depressing this switch causes the data contained in the inactive VFO the VFO that is not currently being displayed to change to the same data con tained in the active VFO the one currently dis played Both the frequency and mode are changed 3 4 AUTOMATIC ANTENNA TUNER The AT unit AT 440 is required for this function The automatic antenna tuner operates within the amateur radio bands from 3 5 thru 29 7 MHz 1 Ensure that an antenna designed for use within the band you intend to opera
22. desired output level is ob tained The T5 4405 also provides a side tone oscillator cIr cuit to allow monitoring of your CW signal during trans mission 1 3 b I LU 4U IjU s I dB PW W SW ALC PWR SWR rmJ J lUW a Semi automatic break in Depressing the CW key will automatically place the transceiver into the transmit mode Transmit mode will be maintained for a period determined by the setting of the VOX DELAY control on the rear panel of the transceiver even after the CW key is released ALl zone Notes 1 The FM power output may fluctuate if running less than full output 2 Ensure that an antenna with a low 5WR is used The T5 4405 provides several protection circuits continually loading into an antenna with a high 5WR 3 to 1 or greater will eventually cause damage to the final amplifiers 3 The PWR meter reading may not be accurate with high SWR values Use a good antenna for the most accurate readings 14 Subaudible tone An optional subaudible tone unit TU 8 is available for installation in the TS 440S for accessing 10 meter FM repeaters This tone is activated whenever the TS 440S is in the SPLIT mode 3 5 1 Why two VFO s Occasionally OX stations will utilize an operational procedure known as split frequency operation When the OX station is in this mode he will be transmitting on one frequency an
23. desired pitch after zero beat operation 1 After zero beating turn the RIT switch ON and ad just the RIT control for the desired pitch 2 Adjust the IF SHIFT control for the strongest sig nal level 3 2 1 Initial setting 1 Preset the controls as shown in the accompanying illustration above 2 Place the POWER switch to ON During fixed station operation you must first turn ON your DC power supply the PS 50 is recommended 3 The meter will illuminate and a frequency will ap pear in the display 4 Set the BAND switches for the desired band If you desire to tune a frequency other than one of the amateur radio frequencies place the 1 MHz switch ON With the 1 MHz switch ON the UP DOWN switches will advance the frequency in 1 MHz steps rather than thru the amateur radio bands 5 Select the desired MODE using one of the mode switches Notes 1 By international convention amateur radio fre quencies below 1 0 MHz utilize the LSB Lower Sideband mode and frequencies of 10 MHz and above use USB Upper Sideband 2 The TS 440S automatically selects the normal mode for you The exact changeover point is 9 5 MHz You can override this selection by pressing the desired mode switch 6 Adjust the AF gain control tor the desired volume 7 Slowly rotate the TUNING dial until the desired sig nal can be heard clearly 8 The desired receive frequency can also be entered directly by using the numeric keypad Fo
24. e RIT switch 2 The figure at the right illustrates that the RIT dis play and the VFO display may not agree exactly in all instances since the RIT and VFO tune in 10Hz steps The normal resolution of the VFO is 100 Hz so if the RIT or VFO is turned slowly the associat ed display may not update immediately You will have to tune 100 Hz to see the display actually change The switch has five pQsitions AUTO N M 1 M2 and W that are used to select the bandwidth The M 1 and N positions are not active until the optional filters are installed see the accompanying chart This switch should normally be set to the AUTO position The IF bandwidth will then be selected for optimum receiver characteristics according to the MODE that has been selected Manual override is possible by simple rota tion of the SELECTIVITY control 1 MHz step switch This switch is used to determine if the UP DOWN switches will function in 1 MHz steps or only thru the amateur bands When the 1 MHz step position is selected the 1 MHz indicator will light TUNING dial VFO Rotate the knob to select the desired frequency Fast tuning is possible by rotating the knob rapidly This con trol may also be used to select the desired memory channel The dial drag is adjustable by holding the out side knob and turning the inside knob clockwise to in crease drag and counterclockwise to decrease drag T
25. e is modified according to the selected mode for optimum tuning speed and accuracy An auto matic fast scan function is also provided Dual digital VFO s A B enable crossband cross mode operation 100 channel memory including 10 odd split chan nels stores the frequency band and mode Memory scan and two programmable scan ranges Direct entry of the desired frequency using the front panel numeric keypad is also possible A memory scroll function allows review of the memory channel contents Selection of the desired memory channel fs possi ble using either the TUNING dial or microphone UP DOWN pushbuttons The T F SET function is useful for split frequency operation An optional tone unit TU 8 may be used in conjunc tion with the odd split memory channels to allow 10 meter repeater operations with CTCSS access Optional computer interface Built in long life memory back up battery 2 color fluorescent display tube indicates frequen cy and other operational data 8 Switchable IF bandwidth The IF bandswitch allows you to tailor the receiver bandwidth to the operating conditions Several selec tions are provided AUTO W Wide M 1 Medium 1 M2 Medium 2 and N Narrow When the AUTO po sition has been selected the radio will select the opti mum bandwidth for the selected mode of operation 13 Front panel cont
26. er OFF when the lights heater wipers and other high draw accessories are used 2 Avoid transceiver operation when the engine is not running 3 If necessary use an ammeter and or a voltmeter to check battery condition 45 10 3 RADIO FREQUENCY AllOCATION 30 m amateur band 25 m broadcast band MHz 1st 2nd 3rd Zone Zone Zone g g F 11 650 12 050 13600 13 800 14 000 20m 14 350 amateur band 15 000 19m 15 100 b d b d 1 roa cast an 15600 17 55C1 17 900 18 068 17m 18 168 amateur band 20 000 21 000 15 m 21 450 amateur band 21850 13m broadcast band 890 12 m 24 990 amateur band 25 000 25 670 11m 26 100 broadcast band 28 000 10m 29 700 I amateur band 1st Zone Europe and Africa Soviet Russia Turkey and Mongolia included 2nd Zone South and North America 3rd Zone Asia and Oceania Soviet Russia Turkey and Mongolia excluded In some countries frequencies allocations do not accord with this table Standard time frequency 0 General broadcast band Tropical broadcast band Amateur band 0 Other stations Radio Frequency Allocation Notes 1 Radio stations throughout the world are listed in the WORLD RADIO TV HANDBOOK or similar pubil cations 2 Antennas designed for ham band operation will generally p
27. er performance This is easily done by activat ing the A TT switch This control is also useful when a strong signal is near your desired signal while some loss will occur to the desired signal as well as the un desired signal the use of the attenuator will sometimes allow you to complete the 050 NB Noise Blanker switch When pulsating noise such as that caused by automo bile ignitions is encountered place the NB switch ON This will provide approximately 40 dB s of attenuation to this interfering signal If there is no noise present the switch should be in the OFF position This switch will not help to eliminate atmospheric or line noises only pulse type noise VOICE switch When the optional VS 1 voice synthesizer unit is in stalled the operating frequency will announced whenever the VOICE switch is depressed For a dial frequency of 14 200 0 the frequency will be an nounced as one four point two zero zero zero zero Please refer to page 28 for installation instructions con cerning the VS 1 Voice Synthesizer 9 3 1 2 Rear panel CD VOX GAIN control This control adjusts the sensitivity of the VOX ampli fier Adjust this control for your personal preference CD ACC 3 terminal Spare RCA type terminal No internal connections have been
28. es are available for more sophisticated operation of your transceiver 6 1 CRYSTAL FILTER INSTALLATION 1 Remove the top cover from the radio Be careful of the speaker lead which may be unplugged 2 Remove the seven screws securing the IF unit to the chassis 3 Install the crystal filter in the appropriate location on the IF unit The SSB filter goes towards the center and the CW filter towards the ec jge of the board Solder the filter in place and cut off the ex cess lead lengths Note When soldering use a low wattage iron 40 watts or less and a high quality rosin core solder Do not use acid core solder as this will eventually cause damage to the circuit board Solder quickly but en sure that you have a good solder connection If the connection is dull or looks crystalized you will have to remove the solder and try again 4 When installing the optional crystal filter move the white or blue lead or both to the appropriate ter minal as shown in the chart on page 28 5 Replace the IF unit and secure with the seven screws removed in step 2 6 Reattach the speaker lead and replace the top cover Note Two terminals are provided for the WIDE and SSB jumper Either of the two terminals may be used YK 88C CW FILTER Center frequency Passband width Attenuation bandwidth Guaranteed attenuation 8 830 7 kHz 500 Hz 6 dB 1 5 kHz 60 dB More than 80 dB YK 88C
29. f resonance and that tuning has been completed 2 Normal operation is not possible until the ATTUNE switch has been turned OFF 3 If the motors do not stop turning after approximately 30 seconds place the AT TUNE switch to OFF and then back to ON again The tuner will attempt to tune again and should find a good match If the tuner will not stop after several tries it indicates some problem exists with the antenna system Readjust the antenna and feedline before attempt ing to tune again To avoid confusion during contest or pile up oper ations we recommend using VFO A for receive and VFO B for transmit d T F SET switch Depressing this switch will allow you to rapidly set or check the transmit frequency during SPLIT operations without the need of actually trans mitting This switch is especially convenient when you are trying to locate the transmit frequency of the sta tion currently in contact with the OX station since 3 5 DUAL DIGITAL VFO s Operational convenience can be enhanced thru the use of both VFO A and VFO B 15 depressing this switch allows you to receive on the transmit frequency as long as the switch is held depressed The TUNING dial is active when this switch is depressed so it is easy to change your transmitter frequency at the same time if neces sary Releasing the switch will return you to the original receive
30. f the high quality audio obtained from the transceiver PC 1A PHONE PATCH Available only where phone patch operation legal Hybrid phone patch with VU meter for null and audio gain measurements The PC l A Phone Patch provides interface between the transceiver and telephone line Providing excellent performance it is designed with high isolation between receive input and transmit out put Its compact design permits easy installation in a limited space FCC Part 68 registered SP 50 MOBilE SPEAKER 8 ohms Compact and smart high quality external speaker pro vides flexibility of installation for maximum con venience SP 41 MB 430 SM 220 S P 430 SP 50 TL 922A TL 922 31 HS 7 MICRO HEADPHONES 16 OHMS TU 8 SUBAUDIBLE TONE UNIT 38 CTCSS tone frequencies can be selected by set ting of the dip switch HS 6 COMMUNICATIONS HEADPHONES 12 5 OHMS Deluxe very light weight headphones designed for communications equipment IF 232C INTERFACE The IF 232C Interface is the adapter for connection be tween the RS 232C terminal of a personal computer and the interface terminal of the TS 440S IC 10 INTERFACE IC KIT HS 5 COMMUNICATIONS HEADPHONES 8 OHMS Headphones designed for communications equipment These light weight open air type headphones remain comfortable during extended operation Easily attached earpads
31. group 0 Memory channels 00 thru 09 Memory channels 10 thru 19 Memory channels 20 thru 29 3 6 6 Memory recall Fixed channel type recall is possible when using the VFO M key to recall memory channel information The stored frequency cannot be changed although the RIT XIT function is active 1 Press the VFO M key The memory channel num ber mode and stored frequency data will be dis played If a channel contains no data only the channel number will be displayed Memory channels 90 thru 99 17 2 Select the desired memory channel using the methods described under Memory Entry section 3 6 3 Transferring data between memory channels 1 With the TS 440S in the memory mode press the M IN key and scroll to the channel that you want the data to be transferred to M CH n ILl cn 1 _ U 2 Press the M IN key The frequency and mode of the memory channel that appeared before you pressed the M IN key will duplicated in the new channel 3 To return to the VFO mode press the VFO M key again i t J J I I l VF 7 5 OVFO I C U Notes 1 RIT XIT will be cancelled when the T5 4405 is switched from the VFO mode to the memory mode but will be restored when the T5 4405 returns to the VFO mode 2 When the T5 4405 is switched from the memory mode to the VFO mode the
32. he table in section 6 1 CRYSTAL FILTER INST AL LA TION on page 27 shows the bandwidth of each switch setting Note the differences when the option al filters are installed The YK 88C is used in the N position and the YK 88SN in the M 1 position Notes 1 During transmit the wide filter position is selected regardless of the position of the SELECTIVITY switch 2 When in the FM mode the bandwidth is always 15 kHz regardless of the position of the SELECTIVI TY switch 3 When the SELECTIVITY switch is set to N or M 1 and no optional filters have been installed there will be no sound from the speaker Refer to the option al filter installation procedure in the rear of this manual for information on installation of these options Program keys M V Used to recall a frequency from memory to the VFO SCAN Pressing during VFO operation will initiate program scan and pressing during memory operation will initiate memory scan Press ing during scan operation will cause the scan speed to toggle between 2 speeds fast and slow CLEAR Used to cancel memory storage operations or to cancel an entry during direct keyboard entry of frequency using the ENT key VFO M Used to switch between memory or VFO operations M IN Used to enter data into a memory channel ENT Used to directly enter a frequency from the numeric keypad AGC switch T
33. his switch selects the operating time constant of the AGC Automatic Gain Control circuit during receive When the AGC switch is set to SLOW the receiver gain and S meter readings will react slowly to large in put changes and when set to FAST the receiver gain and S meter will react quickly to changes in the input signal level The normal position when using all modes is the SLOW position When working weak signals or high speed CW you might wish to use the FAST position Note This switch is disabled during FM operations PHONES jack Output terminal for headphones NOTCH switch When this switch is ON the notch filter is activated MIC jack Connector for a microphone PROC Processor switch Effective transmit power output will increase when the PROC switch is turned ON during USB LSB AFSK or FM mode operations Note When the speech processor function is used in the USB LSB or AFSK mode it is possible to overdrive the transmitter An easy way to check for excessive modu lation is to monitor the ALC meter If the needle is over the ALC zone you are overmodulating Reduce the MIC gain control setting until the needle remains in the ALC zone on voice peaks MIC connector Front view AT TUNE switch When this switch is turned ON with the AUTO THRU switch is placed in the AUTO position the automatic tuner will be engaged and the tuner will try
34. ill not erase the memory The battery should last for approximately five years When the battery discharges an erroneous display may appear in the display Lithium battery replacement should be performed by an authorized KENWOOD service facility either your KENWOOD dealer or the factory since this unit contains CMOS type circuitry 5 7 ORDERING SPARE PARTS When ordering replacement or spare parts for your equipment be sure to specify the following Model and serial number of your transceiver Schematic number of the part Printed circuit board number on which the part is located part number and name if known and quantity desired Part numbers for most replacement parts is contained in the service manual available as an option from your dealer Notes 1 When the lithium battery is replaced the microprocessor must be reset using the procedure in section 5 6 2 When the lithium battery fails the radio s microcod ed functions are NOT affected Only information stored in memory will be cleared 22 5 8 ADJUSTMENTS 5 8 1 Cover removal Cautions 1 Before removing the cover turn the DC power sup ply s power switch OFF and disconnect the power cable 2 Do not pinch wiring when opening or closing cases Removing the covers Remove the top cover 9 screws filter unit cover 3 screws and the bottom covers 8 screws from radio B Bottom view 23 5 8 4
35. increased if a good directional rotary anten na is used Remember that even the most sophisticat ed transceiver is useless without a good antenna Notes 1 Some cars have plastic bumpers For such cars ground the antenna mount to the body 2 When tuning a newly installed antenna use the fol lowing procedure Turn the CAR control fully counter clockwise for minimum transmit power With the transceiver in transmit mode raise transmit power output slowly by rotaing the CAR control clockwise The antenna should be adjust ed with minimum power Transmitting with full power is recommended only after the antenna has been adjusted for a VSWR below 1 5 1 3 Antenna installation is critical for successful mo bile operation For further information refer to THE RADIO AMATEUR S HANDBOOK RADIO HAND BOOK or other texts Ground plane antenna 2 Coaxial cable connection When the antenna is mounted on the behicles bum per the coaxial cable from the antenna can be routed through a drain hole in the trunk When the antenna is roof mounted pass the cable between the body and door Leave a driploop at the lowest point in the cable before entry into the vechicle to prevent water from entering the car Dipole antenna 3 Adjustment Some mobile antennas are not designed at 50 ohm im predance In this case impedance matching between the antenna and the coaxial cable
36. ion can void the transceiver s warranty When operated properly the transceiver can give years of service without requiring realignment The informa tion in this section gives some general service proce dures which can be accomplished without sophisticated test equipment 5 2 SERVICE Should it ever become necessary to return the equip ment to your dealer or service center for repair pack in its original box and packing and include a full description of the problems involved Also include your telephone number You need not return accessory items unless directly related to the service problem Notes 1 Record the date of purchase serial number and dealer from whom purchased 2 For your own information retain a written record of any maintenance performed on the unit 3 When claiming warranty service please include a photocopy of the bill of sale or other proof of pur chase showing the date of sale You may return your radio for service to the Autho rized TRIO KENWOOD Dealer from whom you pur chased it A copy of the service report will be returned with the unit Please do not send sub assemblies or printed circuit boards Send the complete unit in its original boxes and packing 5 3 CLEANING The knobs front panel and cabinet of the transceiver are likely to become soiled after extended use The knobs should be removed from the transceiver a
37. is is accomplished by utilizing a three stage final amplifier section having a relatively low collector loss figure and a high effi ciency cooling system 4 4 6 Filter unit IX51 1340 001 Provides for a high quality transmitter output by reduc ing unwanted harmonic emissions This unit also de tects the forward and reflected power sensing circuits for ALC SWR and Antenna Tuner circuits 4 4 7 Automatic Antenna Tuner unit X5 7 1150 00 This unit consists of the tuner and control sections The tuner section consists of three coils and motor driven variable capacitors which form the actual tuning cir cuit The control section takes the information provid ed by the filter unit as well as band and frequency data provided by the RFunit to control the variable capaci tors and switching off the coil The automatic anten na tuner operates from 3 5 thru 29 7 MHz 4 3 RECEIVER SECTION The incoming signal for the antenna is fed to the receive band pass filters in the RF unit via a front panel controlled attenuator circuit Selection of the desired BPF is accomplished thru data supplied from the Con trol unit Signals from the BPF are mixed with the VCO signal in the 1 st RX mixer to obtain the 1 st IF frequen cy of 45 05 MHz This signal is filtered by a MCF Monolithic Crystal Filter and applied to the 2nd RX mixer This mixer combines the 1 st IF frequency with
38. kHz modulation ratio 12 GND Grounding The shielded wire of the audio input is connected here 13 Standby terminal Grounding transmits Standby PAGE 9 REMOTE connector Note When the control relay is used refer to section 5 8 10 3 2 RECEIVE SQL control Fully counte clockwise POWER switch OFF NO _ 0 10 or O O II I va B I_ 8 _ 8 8 88 8 8 a I I _SOE VER I RF gain control Fully clockwise u u AF gain control Fully counter clockwise Standby switch REC IIIII l I II I AGO SE CT II li1 1 E RIT switch OFF I TUNING dial VFO MODE keys 3 2 2 CW zero beat operation Zero beat operation with a station during CW mode operation 1 Set the RIT XIT switches to OFF 2 When an optional filter is not used tune the TUN ING dial so that the receive beat frequency is ap proximately 800 Hz You can check this by turning the VOX OFF and then closing your CW key Then by using the sidetone oscillator and the incoming receive signal you can zero beat by turning the TUNING dial until the two tones are the same fre quency 3 When the YK 88C filter is used the simplest method to use is to adjust the TUNING dial for a maximum S meter deflection Reception at the
39. keypad the TUNING knob or the UP DOWN microphone or BAND switches 3 Press the CLEAR switch Pu S 2 CH8 CH9 14 200 00 14 320 00 use 5 If you want to scan both ranges PG S 1 and PG S 2 press the 6and then the 8 key while holding the SCAN key down and then release the SCAN key Scan will proceed thru the limits in memory chan nels 6 and 7 thru the limits in memory channels 8 and 9 and then return to begin the process again 4 A decimal point will appear in the M CH display to indicate that the channel will be skipped n _ u 5 To cancel the lockout select the desired channel and then press the CLEAR switch The decimal point will go out indicating that the channel will again be scanned PG S 1 CH6 CH7 CW 1 l r P i CH8 CH9 u 6 To stop scanning press the Pi switch or the CLEAR key Pressing the SCAN key allows scan to resume from the point you stopped 18 3 8 AFSK 3 8 1 Reception Note An RTTY terminal is required to receive and dis play print the RTTY signal 1 The AFSK mode utilizes the LSB carrier frequency which conforms to international conventions 2 When the optional YK 88C filter is installed the nor mal receiver bandwidth is 500 Hz when the SELEC TIVITY switch is set to the AUTO position and the MODE switch is in AFSK The accompanying diagram illustrates the relatio
40. level Now all signals that were less than the desired signal will be attenuated such as static noise etc making the completion of the OSO easier If the incoming signal pegs the S meter you can also reduce the receiver gain by counterclockwise rotation of the RF control The S meter pointer will always ad vance up scale as the RF control is rotated counter clockwise as a visual reminder that the gain of the radio has been reduced AF gain control Turn the inside knob to increase or decrease the volume SELECTIVITY switch When an optional filter is installed the radio s pass band can be switched to one of four different band widths RIT XIT control RIT control When the transmit frequency of the distant station drifts a little bit during the OSO but you do not wish to alter your transmit frequency to compensate you may wish to make use of the RIT control function This control allows shifting the receive frequency without shifting the transmit frequency The RIT control allows you to shift the receiver frequency 1 2 kHz This control is also useful for pileups when the OX station is transmitting a little above or below his receive frequency Notes 1 The RrT offset is displayed on the main display You can therefore preset the offset before you actually need to use it When you move to another station make sure you turn OFF th
41. n ship between the carrier and the passband width 3 The demodulated AFSK signal is sent from the AFSK OUT terminal on the rear panel 4 This completes the preparation for using the AFSK mode Note Before connecting the terminal you should review the contents of the instruction manual provided with that terminal unit z z RTTY wave F1 of the TS 440S See page 11 for the REMOTE ter minal pin configuration 3 Place the MODE key on the TS 440S to AFSK and the Meter switch to ALC 4 To transmit either place the SEND REC switch on the TS 440S to SEND or use the PTT signal from your terminal unit 5 When using AFSK you can also apply your trans mit signal tones to pin number 1 of the microphone connector if you do not wish to use the two jacks on the rear of the TS 440S To adjust the power output in AFSK increase or decrease the MIC gain control setting A mid scale ALC reading will yield full power output Notes 1 AFSK operation requires terminal unit designed to supply this type of operation You cannot use FSK tones with an AFSK jack 2 The AFSK oscillator circuit should provide audio tones of 2125 and 2295 Hz Lower tones may cause spurious output due to the higher harmonic content present with these lower frequencies 3 The TS 440S and RTTY terminal unit should use separate power supplies in order to prevent RFI Radio Frequency In
42. nd cleaned with a neutral soap and warm water Use a neutral soap not harsh chemicals and damp cloth to clean the cabinet and front panel Tag all returned items with your name and call for iden tification Please mention the model and serial num ber of your radio in any correspondence whether phone or written For future reference record this in transceiver not by defective components Examine and check according to the following table If the problem persists contact an authorized agent or serv ice station 5 4 IN CASE OF DIFFICUL TV The problems described in this table are failures caused in general by improper operation or connection of the RECEPTION Symptom Probable cause Corrective action Indicators do not light and no receiver noise is heard when the POWER switch is turned on Check cables and connections Check for the cause of the blown fuse and replace the fuse 1 Bad power cable or connections 2 Blown power supply fuse 3 Power supply is OFF Nothing is displayed or wrong digits are displayed when the POWER switch is turned on The microprocessor malfunctions ThiS occurs when the battery is old or the sup ply voltage drops extremely on the occa I sion of consuming large current 1 Adjust the supply voltage to nominal voltage f 10V with use of a boost ing transformer Use a 12 to 16V battery 2 Turn the POWER switch on again I JO signal IS recei
43. nd front panel 2 Do not alter the settings of the dip switch They are factory adjusted and damage or misoper ation may result 5 8 6 Side tone level 1 Remove the top cover 2 Adjust VR 9 for your reference 3 Replace the top cover CO t 5 8 8 Beep tone level 1 Remove the top cover 2 Adjust VR l0 for your reference 3 Replace the top cover 5 8 7 Beep tone selection The audio oscillator that provides the Morse Code sig nal when you press a mode key may be changed to provide only a single confirmation tone by cutting di ode 065 on the Control unit 1 Remove the top and bottom covers from the radio 2 Remove the countersink screws 2 on each side that secure the front panel to the chassis and gently pull the front panel forwards 3 Remove the 5 small round head screws that secure the shield plate 2 on the top and 3 on the bottom to the front panel and remove the shield plate 25 5 8 9 TUNING dial torque Turn the VFO knob while holding the silver ring As the VFO knob is turned clockwise drag will be increased 5 8 10 linear amplifier control As delivered from the factory the external keying re lay for control of a linear amplifier is disabled If you want to connect a linear amplifier connect the jumper wire on the Switch unit to the ON terminal as shown in the accompanying figure Rear panel 26 6 The following accessori
44. oes out with VFO M ON Memory is empty When nothing is stored in the memory channel a channel is displayed and blanked with only the decima point dis played Store the frequency TRANSMISSION Corrective action Probable cause Symptom No output in sse RF and ALC meters do not deflect 1 Open microphone cable or bad microphone 2 Low microphone gain 1 Check the microphone 2 Increase the MIC gain control See section 3 1 2 VOX GAIN control VOX does not operate 1 VOX GAIN control too low 2 ANTI VOX control requires ad justment ANTI VOX control requires adjustment VOX trips by speaker output I JO output in CW I The key plug is incompletely inserted or KEY contact failure Linear amplifier does not key Internal connector was not moved 2 REMOTE connector is miswired or has a poor contact See section 3 1 2 ANTI VOX control 1 Insert the key plug fully 2 Turn the CAR control clockwise 11 Move the connector as described ir section 5 8 10 2 C i I 5 6 MICROPROCESSOR RESET When the microprocessor has functioned erroneously or when setting the transceiver in the initial state switch on the power with the A B switch pressed 5 5 MICROPROCESSOR BACK UP LITHIUM BATTERY A lithium battery is contained in the transceiver to retain memory Turning off and POWER switch disconnec ting the power cable or a power failure w
45. on into the split frequency memory section the transmit and receive frequencies will be the same 4 Only the receive memory will be transferred into general memory during transfer operations from the split memory area To initiate memory scan of all memory channels 1 Press the VFO M key to select the memory mode 2 Press the SCAN key Scan will begin at memory channel 00 or the lowest numbered channel con taining data 3 You can stop scanning by pressing the CLEAR or microphone PTT switch Pressing the PTT switch will allow you to continue scanning from the point that you stopped and pressing the CLEAR key will allow you to start scanning from the beginning 4 To resume scan press the SCAN key again 3 6 5 Clearing a memory channel Two methods may be used to clear a memory channel 1 M IN switch Transferring information from a vacant channel i e one that has no stored information thru the use of the M IN switch as described previously in section 3 6 1 is one method of clearing a memory channel 2 ENT switch Data may also be erased by depressing the ENT key while depressing the CLEAR key To initiate memory scan of specific memory channel groups 1 Press the VFO M key to select the memory mode 2 Press and hold the SCAN key 3 You may specify which memory groups you want to scan by depressing the key that corresponds to the ten position of the memory channel
46. ot slip out of place while operating the vehicle Notes 1 Do not install the TS 440S near the heater outlet 2 Allow sufficient space behind the TS 440S to en sure proper ventilation VFO I U II n n D 0 I I CJ _ Lt U I RIT rotating the IF SHIFT control in the e direction This will cause the resulting audio frequencies to ap pear a little on the high side again just the opposite of the USB mode o Ii a q 0 olq 9 II J I 1 S 9 I t a q 0 l1l q 1 1 1 1 CW mode The operation of the IF SHIFT control is similar to that for USB with the exception that you can con trol the tone of the CW note by using the RIT control I I 0 q 0 olq 0 I I I 3 q l qal9 EQ o l XIT control When the RIT XIT control is rotated with the XIT switch depressed the transmit frequency can be varied 1 2 kHz without affecting the receiver frequency Pressing the switch again releases the XIT function RF gain control This control adjusts the gain of the receiver high frequency amplifier section For normal receiver performance and maximum gain this control should be in the full clockwise position If you are having trouble copying the desired signal make a note of the stations peak S meter reading Then ad just the RF control counterclockwise so that the meter needle is stationary at this
47. p tone level 25 3 5 1 Why two VFO s 15 5 8 9 Tuning dial torque 26 3 5 2 Split frequency 15 5 8 10 Linear amplifier control 26 a A B switch 15 6 OPTIONAL ACCESSORIES 27 b A B switc h 15 6 1 CRYSTAL FILTER INSTALLATION 27 c SPLIT SWltC 15 6 2 VOICE SYNTHESIZER UNIT VS 1 d T F SET switch 15 3 6 MEMORY 16 INSTALLATION 28 6 3 INTERFACE IC KIT IC 10 3 6 1 Memory entry 16 3 6 2 Transferring memory information to the INSTALLATION 29 VFO 16 6 4 OTHER ACCESSORIES 30 3 6 3 Transferring data between memory 7 BLOCK DIAGRAM 33 channels 17 8 SCHEMATIC DIAGRAM 34 3 6 4 Entering Transferring data in the split 9 SPECIFICATIONS AND ACCESSORIES 41 frequency channels 3 6 5 Clearing a memory channel 9 1 SPECIFICATIONS 41 3 6 6 Memory recall 9 2 ACCESSORIES 42 3 7 SCAN 10 REFERENCE 43 3 7 1 Memory scan 10 1 ANTENNA INSTALLATION 43 3 7 2 Program scan 10 1 1 Fixed station 43 3 7 3 Scan speed 10 1 2 Mobile 43 3 7 4 Memory channel lockout 10 2 MOBILE OPERATION 44 3 8 AFSK 10 2 1 Installation 44 3 8 1 Reception 10 2 2 Noise reduction 45 3 8 2 Transmit 10 2 3 Battery capacity 45 3 8 3 AMTOR operation 10 3 RADIO FREQUENCY ALLOCATION 46 3 9 OPERATION WITH A LINEAR AMPLIFIER 1 17 17 17 17 18 18 18 19 19 19 19 19 2 1 1 Wide dynamic r
48. r details of this operation please refer to the Direct key board frequency entry section on page 13 12 3 2 3 Direct keyboard frequency entry Direct keyboard entry of the frequency is possible us ing the numeric keypad on the TS 440S This allows rapid changes in frequency without the delays encoun tered when using other tuning methods 1 Select the VFO mode 2 Press the ENT key The display will indicate 3 2 4 AM reception There are cases during AM broadcast reception where interference in noticeable when SELECTIVITY is W but the intelligibility is poor with the radio in the M2 posi tion due to a lack of high frequency response If this condition occurs place the SELECTIVITY switch to M2 and rotate the TUNING dial 1 kHz from the center frequency It should be possible to find a point where the interference will be a little greater intelligibility should be improved Another method utilize s the execellent receiver stabil ity of the TS 440S by selecting USB or LSB and tun ing to one of the sidebands of the AM signal The only disadvantage to this method is that a 5 Hz beat tone might be detected along with the desired receive signal 3 Enter the desired operating frequency from Most Significant Digit to the Least Significant Digit You do not have to enter trailing zeros but you must enter a leading zero for frequencies
49. rameters until you manually change the information This saves a lot of key strokes if you al ways scan the same ranges etc To initiate PG S 1 Press the VFO M key to select VFO operation 2 Press and hold the SCAN key 3 7 3 Scan speed Two scan speeds are available with the T5 4405 To change the speed press the 5CAN key after you have initiated scan You will be able to toggle between fast and slow each time you press the key Note The scan step size depends upon the mode that has been selected for S5B CW and AF5K the step size is 10Hz for FM and AM the step size is 100 Hz 3 7 4 Memory channel lockout This transceiver has a memory channel lockout func tion which allows you to temporarily skip unwanted memory channels during memory scan 3 To initiate PG S 1 press the 6 key and then release both the 6 and the SCAN keys Scan will begin on the frequency programmed in memory channel number 6 and proceed in 10Hz steps to the upper limit stored in memory channel 7 then return to channel 6 and begin again PGS 1 CH6 CH7 1401000 14 100 00 CWI I L 4 To initiate PG S 2 press the 8 key and then release both the 8 and the SCAN key Scan will proceed in the limits specified in memory channels 8 and 9 just as for PG S 1 1 Press the VFO M key to enter the memory mode 2 Select the memory channel that you want to skip using the numeric
50. ree methods described below a Turn the TUNING dial until the desired channel number is displayed One revolution of the dial cover about 10 channels Notes 1 The RIT XIT status will be copied from the memory to the VFO when the M V key is depressed 2 When data is transferred from the split frequency memory the active VFO is loaded with the receive data and the inactive VFO will be loaded with the transmit data The TS 440S will then automatical ly enter the SPLIT mode 3 This operation will not function if no data is con 16 3 7 SCAN 3 7 1 Memory scan Memory scan operates from memory channel 00 thru memory channel 99 at approximately 3 4 second in tervals or you may specify which memory groups you want to scan Only these memory channels with data entered are scanned 3 6 4 Entering Transferring data in the split fre quency channels Separate transmit and receive frequencies may be en tered into memory channels 90 through 99 The proce dure is similar to that given for the other channels with the following exception 1 The active VFO frequency and mode is stored in the receive memory and the inactive VFO frequen cy and mode is stored in the transmit memory regardless of whether the SPLIT function is ON or OFF 2 The RIT offset is stored in the receive memory and the XIT offset in the transmit memory 3 When data is transferred from the general memory secti
51. rol of the TUNING dial torque is provided C dS rO ER SEJt VICE 1 3 0 6 19 7 o 3 2 2 1 PRECAUTION 1 A void direct sunlight and select a dry well venti lated location 2 Since the heat sink is on the rear panel avoid plac ing the equipment with the bottom and rear sides close to a wall or desk 3 When installing the equipment in an automobile en sure adequate ventilation Install the equipment in a location where the rear does not make direct con tact with the seat and is not directly exposed to vibration 4 A void installing the equipment in front of the car heater air outlet 5 The standard operating voltage of the equipment is 13 8 V Do not operate below 12 V or over 16 V 2 2 FIXED STATION 2 2 1 Interconnection The TS 440S requires more than 18A at 13 8 VDC when transmitting at full power Use the PS 50 or PS 430 power supply for fixed stations Note The PS 50 base station supply is needed for continu ous transmission operation The transceiver can be elevated for operating con venience C autlon Do not use the bail to carry the transceiver Key S 4 4 S PS 50 PS 430 SP 430 To AC outlet Ground To antenna 2 2 2 Grounding Caution Never use a gas pipe or electrical conduit pipe OK Notes 1 A ground connection that is a 1 4 wavelength or its multiple may provide a good DC ground b
52. rol signals for all the various units 4 2 TRANSMITTER SECTION The incoming microphone audio is routed to the IF unit where it is amplified by the microphone amplifier and then distributed to the SSB FM and VOX circuits The SSB signal is applied to the balanced modulator then amplified and converted to the 1 st IF frequency of 455 kHz This DSB Double Side Band signal is filtered to obtain the SSB signal The SSB signal is mixed with the local oscillator frequency of 8 375 MHz in the 1st mixer to obtain the 2nd IF signal of 8 83 MHz This signal is filterd by a CF Ceramic Filter to remove the unwanted by products of the mixing action The filtered output is applied to the RF unit In the RF unit the signal is mixed with the HET OSC frequency of 36 22 MHz by the 2nd mixer to obtain a frequency of 45 05 MHz This signal is combined with the VCO signal in the 3rd mixer to obtain the transmit frequency which is applied to the Final unit via a LPF Low Pass Filter The Final unit amplifies the signal to the desired power level and then routes the signal thru an additional LPF to the antenna terminal or the Antenna Tuner if installed 4 4 4 PLL unit X50 2050 00 Five PLL loops are provided as well as the reference crystal oscillator 36 MHz 4 4 5 Final unit X45 1470 00 This unit amplifies the TX RF signal for transmission TS 440S has an output of 100 W Th
53. rovide satisfactory reception for SW sta tions near the ham bands For antenna construc tion details see the ARRL ANTENNA HANDBOOK or similar publications Frequency distribution in the broadcast and amateur bands The general coverage receiver covers from 100 kHz to 30 MHz to receive international broadcast and com munication services As shown in the frequency allocation chart above figure broadcast and amateur radio station frequen cies are allocated in specific bands expressed in mega hertz MHz or wavelength in meters m Also in the above figure the frequencies of other stations are assigned for fixed station business use marine mobile aviation mobile land mobile radio beacon stations etc 46
54. se steps 1 3 to reassemble the radio Notes 1 When reassembling the radio make sure that you do not cut or pinch any wires between the chassis and front panel 2 Do not alter the settings of the dip switch They are factory adjusted and damage or misoperation may result unit 066 5 8 5 CW zero beat frequency selection You may select between 800 Hz and 400 Hz zero beat adjustments in the CW mode by cutting diode 073 on the control unit 1 Remove the top and bottom covers from the radio 2 Remove the countersink screws 2 on each side that secure the front panel to the chassis and gently pull the front panel forwards 3 Remove the 5 small round head screws that secure the shield plate 2 on the top and 3 on the bottom to the front panel and remove the shield plate 4 Cut the lead of diode 073 located below the dip switch on the control unit 5 Reverse steps 1 3 to reassemble the radio Notes 1 When reassembling the radio make sure that you do not cut or pinch any wires between the chassis and front panel 2 Do not alter the settings of the dip switch They are factory adjusted and damage or misoperation may result 4 Cut the lead of diode 065 located below the dip switch on the control unit 5 Reverse steps 1 3 to reassemble the radio Notes 1 When reassembling the radio make sure that you do not cut or pinch any wires between the chassis a
55. t installation 5 4 4 5 Final unit X45 1470 00 20 2 3 2 Power supply connection 5 4 4 6 Filter unit X51 1340 00 20 3 OPERATION 6 4 4 7 xT5 20 3 1 OPERATING CONTROLS 6 5 MAINTENANCE AND ADJUSTMENT 21 3 1 1 Front panel 6 3 1 2 Rear panel 10 5 1 GENERAL INFORMATION 21 3 1 3 Top cover 11 5 2 SERVICE 21 3 2 RECEIVE 12 5 3 CLEANING 21 3 2 1 Initial setting 12 5 4 IN CASE OF DIFFICULTY 21 3 2 2 CW zero beat operation 12 5 5 MICROPROCESSOR BACK UP 3 2 3 Direct keyboard frequency entry 13 LITHIUM BATTERY 22 3 2 4 AM reception 13 5 6 MICROPROCESSOR RESET 22 3 3 TRANSMIT 13 5 7 ORDERING SPARE PARTS 22 3 3 1 SSB LSB USB mode 13 5 8 ADJUSTMENTS 23 3 3 2 CW mode 14 5 8 1 C I 23 S t t b k 14 over remova a eml au oma IC rea In 5 8 2 I I 23 b F II b k 14 nterna views u automatic rea In 5 8 3 D I d I I b t 24 3 3 3 FM d 14 Iglta ISp ay ca I ra Ion mo e 5 8 4 O I 1 0 H d I I t 24 S b d bl 15 ptlona z ISp ay reso u Ion u au I e tone 5 8 5 CW zero beat frequency selection 24 3 3 4 AM mode 15 5 8 6 S d I I 25 3 4 AUTOMATIC ANTENNA TUNER 15 I e tone eve 5 8 7 Beep tone selection 25 3 5 DUAL DIGITAL VFO s 15 5 8 8 Bee
56. te on is properly connect ed to the antenna terminal For example VFO A is set at 7 MHz in LSB and VFO B is 21 MHz in USB VFO A is the active VFO show on the display Depressing the A B switch will cause VFO B to change to 7 MHz in LSB 2 Set the AUTO THRU switch to the AUTO position 3 Place the A T TUNE switch to the ON position The AT TUNE indicator will light and the tuner will be gin tuning Then the CW mode indicator will light b A B switch Allows selection of the desired active VFO Each time this switch is depressed the active VFO will alternate between VFO A and VFO B 4 After a short period the ATTUNE indicator will go OFF and the motors will stop turning 5 Place the ATTUNE switch to OFF c SPLIT switch Allows the use of one VFO for transmit and the other for receive Split Frequency operation For example VFO A is the active VFO and VFO B is the inactive VFO Depressing the SPLIT switch will cause the TS 440S to receive on VFO A and trans mit on VFO B The mode of reception and trans mission will follow the mode contained in the appropriate VFO memory It is possible to work cross band cross mode if desired 6 Tuning is now completed You may now carry out normal communications Notes 1 When the AT TUNE switch is ON and the AT indi cator lights but then goes out immediately it is an indication that the antenna was not that far of
57. terference 4 During AFSK mode operation the microphone switch should be OFF or ground pin No 9 of the ACC 2 jack or the microphone disconnected if you are using the AFSK jacks on the rear panel 5 The AFSK input level should be less than 100 mV The figure below shows the frequencies relationship 2295Hz 3 8 3 AMTOR operation For AMTOR operation you should reverse the trans mit receive input polarity on your AMTOR terminal since AFSK on the TS 440S operates in the LSB mode If you cannot reverse the polarity you should select the USB mode on the TS 440S During AMTOR operation the microphone switch should be OFF or ground pin No 9 of the ACC 2 jack orthe microphone disconnected if you are using AFSK IN OUT jacks on the rear panel 3 8 2 Transmit Note Key down periods of 1 hour will require q cool down period of approximately 30 minutes The PS 50 heavy duty supply is recommended for continuous duty transmission 3 9 OPERATION WITH A LINEAR AMPLI FIER The TS 440S may be operated with any conventional linear amplifier which will accept up to approximately 125 watts of RF drive has a low current DC operated keying circuit and returns approximately 8 to 1 VDC ALC back to the exciter Please note that in ord er to operate full aSK FULL break in the linear ampli fier must also be aSK capable Refer to the REMOTE connector diagram on page 11 and section 5 8 1
58. their applications are as follows Internal wiring GND View from the rear panel t3 fZ V J 000 I 3 1 3 Top cover CW tIii1 VOX OFF ON aJ J 13 pin DIN plug Pin No 1 2 3 Application No connection No connection Pin Name NC NC Data output VOX BREAK IN switch VOX Voice Operated Switch operation is possible in LSB USB FM or AFSK mode operations To activate the VOX circuitry place the VOX switch ON Output level is fixed regardless of the AF control setting Output voltage 300 mV or more at maximum re ceiving input with 4 7 kO load 4 GND Grounding The shielded wire of the audio output terminal is connected here This control is also used to select either Full or Semi automatic break in 5 6 7 8 9 No connection No connection No connection Grounding P I f K r TT KEP SrlIEl D w rr g I gt W G R EE rD KEH POOV r It S 9 4 1 I J Cf 1 1 1 110 amp gt Z 1 1 1 2 II PIN 1 PI 1 NC NC NC GND MIC mute Signal input from the MIC jack is mut ed Grounding mutes signal 10 11 I No connection NC Data input Input terminal for data communica tion In SSg MIC gain can be con trolled by the MIC control Input voltage 500 mV or less SSB Voltage starts deflecting ALC FM Voltage providing I 3 0
59. to match the antenna F LOCK switch The selected dial frequency is locked and cannot be changed except thru the use of the RIT XIT controls when this switch is ON UP DOWN switches Pressing the UP switch increases the frequency and pressing the DOWN switch decreases it AUTO THRU switch AUTO The auto antenna tuner is used in transmit THRU The auto antenna tuner is not used in transmit I Standby switch This switch is used when you want to manually con trol transmit or receive SEND Places the radio into transmit REC Places the radio into receive The Standby switch is also used to clear an entry dur ing direct entry of VFO frequencies or when entering a memory channel ALC PWR SWR meter switch ALC meter Used to monitor the drive level in USB LSB and AFSK modes PWR meter Used to indicate the output power Note that this meter is a peak reading meter not an average reading meter SWR meter Used to indicate the Standing Wave Ratio of the an tenna and feedline connected to the ANT connector when the AUTO THRU switch is in the THRU position ATT Attenuator switch The incoming receive signal level is attenuated by ap proximately 20 dB when this switch is activated When the incoming receive signal is very strong 20 dB over 5 9 the signal should be attenuated to pre vent distortion of the signal thereby stabilizing the receiv
60. unction FET s in the receiver section s 1 st and 2nd mixers and by a 3SK 73 dual gate MOS FET in the 3rd mixer An integrated circuit balanced modulator AN612 is used in the 1 st transmitter mixer and 2SK 1 22 s are used in the 2nd and 3rd mixers The PLL circuit con sisting of 5 loops and the digital VFO are controlled by a single reference oscillator circuit IF SHIFT and 10 Hz tuning steps are provided thru the use of this system 4 4 1 RF unit X44 1680 00 The receive section of this unit includes the BPF s for each band the 1 st RX mixer a 45 05 MHz MCF the 2nd RX mixer noise blanker circuits and an 8 83 MHz MCF The transmit section includes the 2nd TX mix er 3rd TX mixer amplifier circuits FM microphone am plifier circuit microphone limiter circuits and four VCQ s required to cover the frequencies from 100 kHz to 30 MHz 4 4 2 IF unit X60 1300 00 The receive section of this unit contains the 8 83 MHz filter 3rd RX mixer 455 kHz filter detector and low frequency amplifiers The transmit section contains the microphone amplifier balanced modulator 1st TX mix er 8 83 MHz filter etc This unit also includes the tim ing circuit which controls the CW break in circuit and the 8 375 MHz local oscillator circuit 4 4 3 Control unit X53 1450 00 The unit is centered around the main microprocessor and provides a wide variety of cont
61. urces of noise include the wiper and heater motors Although the transceiver is equipped with a noise blanker to minimize ignition noise it is imperative that some preventiye measures be taken to reduce the noise to the lowest possible level 1 Antenna location selection Since ignition noise is generated by the vehicles en gine the antenna must be installed as far from the en gine as possible 2 Bonding The component parts of motor vehicles such as the engine transmission muffler system accelerator etc are coupled to one another at DC and low frequencies but are isolated at high frequencies By connecting these parts using heavy braided ground straps igni tion noise can be reduced This connection is called bonding 3 Use ignition suppressor cable or suppressor spark plugs Noise can be reduced by using spark plugs with inter nal resistors or resistive suppressor ignition cable 10 2 3 Battery capacity The power system of a motor vehicle is comprised of a battery and an alternator which generates power while the engine is running to supply current to loads or to charge the battery Since the transceiver draws high current during trans mit care should be exercised so the power system is not overloaded When using the transciever the fol lowing points should be observed from the viewpont of battery maintenance 1 Turn the transceiv
62. ustment using the ALC meter provides greater ac curacy than if you try and use the power meter for ad justment Never adjust for ALC deflection above the ALC zone as this will cause distortion of the transmit udio signal Note Attempting to enter a frequency outside the tun ing range of the radio will cause the display to return to 5 If you make a mistake while entering the frequen cy and have not yet pressed the ENT key or en tered the final digit you may cancel the input by pressing either the CLEAR key or standby switch ALC zone 13 3 3 2 CW mode Set MODE keys to CW and set the Meter switch toALC ALC PWR SWR c m 1 J b Full automatic break in Depressing the CW key will automatically place the transceiver into the transmit mode Releasing the CW key will return the radio to receive immediately enabling reception between characters Caution The TL 922A 922 linear amplifer is not designed for full break in type operation Attempting to use this accessory in the FULL break in mode cause damage to occur to the linear amplifier Placing the Standby switch to send and depressing the CW key will cause the radio to transmit Transmission is also possible when in the SEMI or FULL break in mode by simply depressing the key with the Standby switch in the REC position Adjust the CAR control until the meter deflection is within the ALC zone
63. ut it will not provide a good RF ground 2 A city water pipe cannot be used as a good earth in some cases Making a good earth connection is important for preventing dangers such as electric shock and for emit ting a high quality signal with minimum spurious radi ation Bury a commercially available ground rod or copper plate under the ground and connect it to the GND terminal of the TS 440S A thick wire cut as short as possible should be used for the connection To make a good earth connection connect the GND terminal to a grounded metal water pipe GAS 4 2 2 3 Antenna Caution Protect your equipment Use a LIGHTNING AR RESTOR 2 3 2 Power supply connection Cautions 1 Turn POWER switch OFF before connecting dis connecting the power cable 2 Observe battery polarity Any of the common antenna systems designed for use on the high frequency amateur bands may be used with the TS 440S provided the input impedance of the transmission line is not outside the capability of the Au tomatic Antenna Tuner The transmission line should be coaxial cable An antenna system which shows a SWR Standing Wave Ratio of less than 1 5 1 when using 50 ohm coaxial transmission line or a system that results in a transmission line input impedance that is essentially resistive and between 20 and 150 ohms will take power from the transceiver through the AT unit 3
64. ved even when the antenna is connected 1 UL control tully clockwise 1 Turn the SQL control counter 2 Microphone PTT switch is in the trans clockwise mit position and the TS440S is in the 2 Set the PTT switch to the receive transmit mode positon 3 SELECTIVITY switch is set to N or 3 Ensure the SELECTIVITY switch is set M 1 and no optional filter is installed to either AUTO M2 or W An antenna is connected but no sig nal is received and the S meter fully deflects tit control IS too lOW decreasing the high requency circuit gain I urn the RF gain control fully clockwise 21 Probable cause 1 Low AC line voltage 2 RF gain control closed Symptom The S meter deflects and stays at a certain position even with no signal 1 Use a step up transformer to raise the line voltage Use a 12 to 16V battery Turn the RF gain control fully clockwise I Signal is received but no sound is heard MODE key position is incorrect Change the MODE key to the correct mode SSB received signal is extremely high cut or low cut IF SHIFT control is wrong adjusted Set the control to the center click po sition LOCK switch is ON I Set F LOCK switch to OFF rrequency is not changed by pressing the BAND switch or turning the tuning control Memory channel is 6 and 7 or 8 and 9 are empty Program scan fails Memory scan fails Display g

Kenwood TS-440S Wheelchair User Manual

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