Kenwood Tkm707 Mods Free (2024)

The Kenwood TKM707 is a legendary dual-band FM mobile transceiver known for its "tank-like" build quality and excellent audio. While it is an older unit, several popular modifications can modernize its functionality or expand its capabilities. 🔓 Frequency Expansion (Mars/Cap Mod)

Safety Precautions and Warnings

The "Heil" Upgrade:

Many owners choose to bypass the stock electret element entirely. Modifying the mic jack to support a dynamic microphone usually requires adding a bias resistor or removing one, depending on the revision of the mainboard. Dynamic microphones generally offer superior noise rejection compared to the stock Kenwood handheld mic. kenwood tkm707 mods

reducing power for digital modes

The TKM-707 is rated for 150W PEP. However, many units drift with age, and the final transistors (2SC2879) can be pushed further – but do so at your own risk. The most useful mod here is and setting a stable 100W carrier . The Kenwood TKM707 is a legendary dual-band FM

Then nothing but the ocean and the stars. Modifying the mic jack to support a dynamic

The Mod:

Instead of soldering a new coin cell directly to the board, it is recommended to install a button cell battery holder .

Static answered.

Disclaimer: The modifications described above involve opening the radio and soldering components. These procedures will likely void any remaining warranty and, if done incorrectly, can damage the radio. Always ensure you are operating within the legal frequency privileges granted by your license.

Adjusting for Digital Modes (FT8, JS8Call):