The most sought-after mod for the TKM-707 is the MARS/CAP (Military Auxiliary Radio System) expansion. By default, the TKM-707 is locked to marine frequencies and will not transmit on amateur bands.
Easy (no soldering, jumper setting) Principle: Bridge a solder pad to allow clarifier to shift both TX and RX frequencies. kenwood tkm707 mods
On the main circuit board (the Control Unit), there is often a specific diode matrix or jumper configuration. The most sought-after mod for the TKM-707 is
When modifying your TK-M707, consider the following: kenwood tkm707 mods
A known issue with older Kenwood units is "cold solder" joints. If your display flickers or the digital controls act erratically, a careful resolder of the components on the X54-1160-00 digital PCB can bring the unit back to life. Beep & Alarm Levels:
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