MARS/CAP & Frequency Expansion:The most sought-after modification involves expanding the transmit range beyond the factory marine presets. For many Kenwood models of this era, this is achieved by removing specific surface-mount diodes or resistors on the control board. While specific resistor numbers for the

Benefit: Reduces drift from ±50 Hz to ±1 Hz over temperature. Kenwood Tkm-707 Mods

Broad Frequency Coverage: Covers marine bands from 2 MHz to 27.8 MHz and includes a general coverage receiver ranging from 500 kHz to 30 MHz.

| Diode | Marine Stock (Typical) | All-Band Mod | |-------|------------------------|--------------| | D5 | Installed | Remove | | D6 | Installed | Remove | | D7 | Empty | Add | | D8 | Installed | Remove | | D9 | Empty | Add | | D10 | Empty | Add | | D11 | Installed | Remove | | D12 | Empty | Keep Empty | Modifications for the Kenwood TKM-707 Go to product

Here are the top three mods every TKM-707 owner should know about.

Software/Service Menu Method (Some firmware versions): While specific resistor numbers for the Benefit: Reduces

The most critical documentation for this radio includes the service manual and specialized modification threads on community sites: Kenwood TKM-707 Service Manual