Mods: Kenwood Tkm-707

Kenwood TKM-707 is a 150W marine SSB transceiver originally designed for maritime communication. Due to its robust design and wideband capabilities, it has become a popular candidate for amateur radio modifications, particularly for the amateur bands. Core Modifications & Functionality

Receiver front-end filtering

RF output tuning

: A dedicated repository for user-submitted modifications, including discussions on VFO mods and amateur radio (HAM) band usage. Repeater Builder Manual Archive Kenwood Tkm-707 Mods

Expansion Mods: Most technical modifications for this series involve hardware changes to the control unit or the removal of specific diodes/resistors to bypass factory frequency locks. MARS/CAP Modification Kenwood TKM-707 is a 150W marine SSB transceiver

When modifying your Kenwood TK-M707, be aware of the following: Receiver front-end filtering

Quick Checklist Before Any Mod

Backup configuration via CPS.

Obtain service manual and schematic.

Confirm parts compatibility (filters, transistors, speakers).

Test on dummy load for transmit mods.

Measure SWR and output power with calibrated instruments.