The radio's broadband design makes it naturally suited for 160-meter amateur operations.
| Feature | Modification Type | How to Achieve | Result | | :--- | :--- | :--- | :--- | | | Hardware | Clip Diode D312, D313, D314 | Transmit on LSB, USB, and AM across wider frequency range, including ham bands. | | Activate VFO Mode | Hardware + Key Combo | Clip Diode D313, then press C + 84 ENT | Switch from channelized operation to continuous frequency tuning. | | Configure for Ham Use | Hardware | Set DIP switches S301-1: OFF, -2: OFF, -3: ON, -4: ON | Enables full ham band operation with dealer mode and US destination. | | CPU Reset (Clear Memory) | Key Combo | C + Power On | Clears all stored memory channels and performs a full reset. | | CPU Reset (Keep Memory) | Key Combo | ENT + Power On | Resets the CPU but retains programmed memory channels. | | Adjust Power Output | Hardware/Alignment | Internal realignment via service manual. | Potentially boost output from 150W to 180-200W PEP. | | Enable/Disable Key Beeps | Key Combo | C+80 ENT or C+81 ENT | Turn confirmation tones on or off for silent operation. |
After modifying the diodes, perform a full CPU reset by holding the A=B or Clear button while turning the power switch on. Firmware and Frequency Resolution Enhancements Kenwood Tkm-707 Mods
Unlocking the transmitter requires adjusting the internal programming jumpers or diodes located on the main control unit (underneath the microcomputer chassis).
for use on the 11-meter (CB) band, where its high power and stable OCXO make it a "formidable" choice External Controls & Improvements The radio's broadband design makes it naturally suited
Marine radios are factory-configured for mid-range punch to slice through atmospheric marine noise, which can make them sound "pinched" or excessively sharp on amateur bands. Dynamic Mic Upgrade & Bias Mod:
If you are performing these yourself, it is highly recommended to reference the Kenwood TKM-707 Service Manual for exact board layouts and component locations. | | Configure for Ham Use | Hardware
: While common for Kenwood amateur rigs like the TM-G707 (which uses zero-ohm resistors), the
remains a respected piece of maritime history. Through careful maintenance and thoughtful hardware adaptation, enthusiasts are able to keep these robust transceivers operational. These efforts ensure that the "hardware-first" engineering of the past continues to function alongside the technologies of the present. KENWOOD TKM-707 Specs. Features:Benefits | PDF - Scribd
Always wear an grounded to an electronics mat to protect the CPU.