Kenwood TH-25A Instruction Manual page 19

This is an optional change that is not covered under warranty.
Time required for this modification is 1 hour or less.
SYSOP NOTES:
Later versions of the TH-25/45AT came with a programmable defeat for the Auto power off function. Do
not install this modification if your manual provides a procedure for turning the power off function off!
Step 11 tells you to carefully unfold the flexible pc board. It is extremely important that you do not try and
bend the board in a direction that is opposite from its current bend. To do so will break the board or the foil
traces inside the board!
EXT TX ON THE: TH-26AT/TH-45AT/TH-75A HT's
On the three above units a jumper wire controls the TX frequency coverage. By removing the jumper you
will extend TX from 142-152Mhz.
By removing a diode you can extend the TX coverage to the limits of the VCO. Both the jumper wire and
the diode are located on the "CONTROL UNIT".
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