: While common for Kenwood amateur rigs like the TM-G707 (which uses zero-ohm resistors), the
Modifying radio equipment can violate FCC regulations (or local regulatory authority rules) regarding frequency usage and type acceptance. Unauthorized modifications may lead to interference. Always ensure your operation complies with local laws, particularly regarding transmitting on amateur bands with maritime equipment. Why Modify the Kenwood TKM-707
: Squelch sensitivity can be fine-tuned via the SQL key or internal trimmers to better suppress background noise during weak signal reception. Common Performance Optimizations
Some users perform "low audio fixes" or mic gain adjustments to improve voice punch on SSB. Where to Find Specific Guides Kenwood Tkm-707 Mods
to transmit outside marine channels and within the amateur radio (Ham) bands (e.g., 80m, 40m, 20m).
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The TKM-707 has 99 memory channels that can store both receive and transmit frequencies separately (for split-frequency operations). : While common for Kenwood amateur rigs like
: Includes a dual-mode noise blanker (NB-1 for pulse-type noise and NB-2 for long-duty cycle "woodpecker" interference).
By default, the TKM-707 is factory-restricted to specific maritime bands for transmission (e.g., 2.0–2.9 MHz, 4.0–4.9 MHz, up to 22–27.4 MHz), though its receiver natively covers a wide 500 kHz to 30 MHz range. To open up continuous transmission capabilities across the full High Frequency (HF) spectrum for MARS/CAP or Amateur Radio use, you must modify the Control Unit.
The Kenwood TKM-707 Go to product viewer dialog for this item. Why Modify the Kenwood TKM-707 : Squelch sensitivity
Absolutely. You can buy a used TKM-707 for $200–$300. After the , you have a 150W SSB radio with a receiver that rivals the Icom IC-7300 in terms of dynamic range (the TKM-707 uses a double-conversion superheterodyne with a RF MOSFET preamp).
provides the full service manual, which is essential for identifying the correct test points for alignment after any modification. Articles for Kenwood 'TKM-707' - mods.dk
By focusing on proper maintenance and legal operation, the Kenwood TKM-707 can remain a reliable piece of maritime history for many years. Share public link