Because these modifications require precise soldering on specific PCBs (such as the digital or TX-RX units), you should refer to dedicated technical repositories:
| Aspect | Stock TKM-707 | Modified Unit | |--------|---------------|----------------| | | Marine channels (2 kHz steps) | 1.6–30 MHz continuous (10 Hz steps) | | TX Power (PEP) | ~100W | Adjustable 20–150W | | Clarifier Range | ±10 Hz (RX only) | ±1.5 kHz (RX+TX) | | Legal Use | Marine (Part 80) | Requires amateur license (Part 97) | kenwood tkm707 mods
Modifications generally involve removing specific 0-ohm resistors (often labeled 0 through 3) located behind the front display panel or on the main TX-RX board. Here is a comprehensive guide to the most
Use a fine-tipped, temperature-controlled soldering iron. The control board traces are very delicate. kenwood tkm707 mods
Here is a comprehensive guide to the most popular and effective modifications for the Kenwood TKM-707.