The radio's internal DIP switches are the key to unlocking advanced service features. The most crucial one is , which switches the radio from "User Mode" to "Dealer Mode". In Dealer Mode, the radio allows for full-frequency memory programming and advanced alignment adjustments, making it indispensable for any serious modification.
Before attempting any internal maintenance or adjustments, ensure the unit is powered off and disconnected from the power supply. The
Removing specific diodes opens up the transmit coverage. In most production runs, removing Diode D5 (or cutting its trace) enables wideband transmit from 1.6 to 30 MHz. Kenwood Tkm-707 Mods
: Intermittent reception and audio distortion are common reported issues, often resolved by ensuring a solid connection to a copper ground plane and engine block rather than a simple internal mod. Common Repairs (Service Notes)
[Antenna] ---> [IF Stage (Upgrade Mechanical Filter)] ---> [Audio Amp (Change Caps)] ---> [Speaker] SSB Filter Upgrades The radio's internal DIP switches are the key
The modifications described in Section 1 will also unlock several other features.
The TKM-707 is a close relative of the Kenwood TRC-70, and many of the modifications are derived from that platform. The radio is designed for the marine bands and offers a solid foundation for amateur use, making it a great candidate for a range of hardware and software tweaks. : Intermittent reception and audio distortion are common
Modifications for the Kenwood TKM-707 Go to product viewer dialog for this item.