Kenwood Tkm-707 Mods [better] May 2026

Some users choose to install auxiliary cooling fans or improve the airflow around the rear heat sinks. This helps prevent component degradation during extended periods of operation. Frequency Stability:

| Symptom | Likely Cause | Solution | |---------|--------------|----------| | No TX below 3 MHz | Diode mod incomplete | Add D7, remove D5/D6 | | Distorted audio on USB | Carrier oscillator off | Re-align TC1 on IF board | | Low power on 28 MHz | PA output filter detuned | Re-align L1–L6 on LPF board | | Clarifier jumps frequencies | Dirty encoder | Deoxit on RIT pot | Kenwood Tkm-707 Mods

For a ham, this is frustrating. You cannot simply dial up 14.250 MHz to chat. You need: Some users choose to install auxiliary cooling fans

For more information on Kenwood TK-M707 mods and upgrades, check out these resources: You cannot simply dial up 14