Kenwood Tkm707 Mods !new!

: Tap into the switched 12V DC line inside the radio, or run the fan wires externally to your main station power supply.

In the mid-90s, Kenwood was a dominant force in amateur radio (specifically the "TS" series) and commercial land-mobile radio (the "TK" series). The TKM-707 was a 2-meter (144–148 MHz) FM transceiver.

is primarily a voice radio, but adding a CW keying modification allows for its use in amateur radio CW modes. 3. Power and Stability Mods

Bond the radio chassis to a thick copper ground plane strip.

compared to its amateur-market cousins (like the Kenwood TRC-70 or TS-50).

To improve the receiver sensitivity, John decided to replace the TK-M707's original roofing filters with high-performance, narrow-band filters. These filters would help reduce the noise floor and improve selectivity. He sourced the filters from a reputable ham radio supplier and followed a detailed guide to replace the original filters.

Unscrew the four screws in the corners to remove the bottom cover of the main unit.

For heavy amateur radio use (like FT8 or RTTY), adding a small 12V computer fan to the rear heatsink is a highly recommended non-invasive modification to prevent thermal throttling. 5. Technical Quick Reference Original Spec Modified Potential TX Frequency Marine Bands Only 1.6 MHz – 30.0 MHz Power Output Stable at 150W with cooling Memories 198 Channels Fully programmable via front panel Antenna Tuner Works with AT-300 Compatible with various LDG tuners via interface mods