Subject: TM-G707A Mods

Date: Mon, 8 Feb 1999 20:17:04 -0500



Here are three mods that I collected on the net from other users. I

made all three mods and they work as advertised.



There are 2 "standard" mods from Kenwood, and one "discovered".



The first extends receive range to118.0 - 174.0320.0 on 2mtr and a

'new' band of 525.0800.0 - 950.0



The second opens up transmit range for CAP/MARS.



The Third opens up Xmit VHF TX 136.995 - 173.995.  UHF TX should be

410-469.995



From the Kenwood site, get the mod for extended receive.  In addition

to the W501 jumper to cut (MOD 1), also cut the jumper next to it (MOD

2).  Both of them are obvious -- large green loop jumpers next to each

other. (mod instructions can be gotten at ftp.kenwood.net )  It is in

PDF format and gives instruction along with a diagram on how to cut

W501 Jumper for MARS/CAP -- chop the one next to it too. That will give

you the new band and 500-900 MHz RX.



For full xmit capability, follow the instructions for the TMV-7A mod

with one exception, remove SM Resistor number 1 (not the number 0 for

TM-V7A mod!).



The TM-V7A mod can be found at the QRZ site  www.qrz.com. look under

radio mods, and then TM-V7A.



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Here is the text from that site  AGAIN THIS IS FOR TM-V7A remove number

1 for the G707A:



Date: Sat, 31 Jan 1998 Subject: Mars/Cap mod for Kenwood TM-V7A



   Remove the top and bottom covers and the detachable face holder.

Look at the p c board that is vertical behind the front of the radio.

There will be 2 small chip resistors on the left side of the board.

Carefully remove the one with the number 0 . It will be the one closest

to the left near the grounding spring. You will probably have to scrape

it off with a pair of needle nose pliers.  After you remove it the TX

should be VHF TX 136.995 - 173.995.  UHF TX should be 410-469.995

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The drawback to this mod, is that you lose the auto repeater offset

capability. ( You have to manually enter - or + for repeater offset).



I recommend using the computer interface to program the radio.  When

you perform the mod, the radio resets and all memory is lost.  If you

have the computer interface, you can read the radio, save it, and then

re-program it from the file.  Much easier to program the radio, name,

offsets, etc. on the keyboard then on the radio control panel.



I performed all three mods to my TM-G707A and they work flawlessly.



Cheers



Rick W4RP



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Low Audio Fix for Kenwood TM-G707

I have two of these rigs and both had low audio.  I searched the Internet

for a solution and could not find one so I spent $23.00 and purchased the

service manual.  So for everyone that has low audio here is my gift to you!



**Perform at your own risk**



1. Place the radio into Service Adjustment Mode by shorting pins 3 (PKS) and

6 (SQC) on the data jack on the front left side of the radio under the

protective cap.



2. Power up the radio while holding "F" key and "TONE" key



3.Put radio into VFO mode and select a 2 meter frequency and monitor it with

another rig. (I used headphones to prevent feedback)



4. Press MNU to activate adjustment mode



5. Press the < or > keys to get to the DEVI menu



6. Key mic and speak and listen through other radio.



7. Turn the encoder knob until you hear the audio level you want.  Mine

sounded good when the value was "BB"



8. Press "OK" button to save new deviation value.



9. Press MNU to return to VFO mode.



10. Select a 440 frequency and repeat steps 3-9 for the 440 band.  Deviation

is set independently for each band.



11. When complete, power off radio and remove shorting plug. Your radio no

longer has low audio!



** Tip for shorting plug**

I purchased a PS/2 keyboard extension cable as the connector is the same and

inserted a wire between pins 3 + 6 to put into adjustment mode.



Pin 3 is at the 3 o'clock position and pin 6 is at the 10 o'clock position

when looking at the front of the rig and the connector is on your left hand.



Good luck and 73.



Jim WD0JIM