: This wider frequency response provides deeper lows and crisper highs. It makes your signal sound significantly more natural during casual ham contacts. Internal Gain Adjustments
Detach the front panel from the main transceiver body. kenwood tkm707 mods
The most popular modification for the Kenwood TKM707 expands its transmit capabilities outside standard marine allocations. This allows operation across all amateur radio HF bands. The Diode Matrix Modification : This wider frequency response provides deeper lows
Once these simple hardware changes are made, a user can turn the radio on, and the VFO will be active. The only remaining limitation is hardware-based: the TKM-707's internal filters and synthesizer are typically designed to operate up to around 25 MHz, so while you may be able to tune to 28 MHz, actual transmission is unlikely or highly inefficient. The most popular modification for the Kenwood TKM707
Remove or lift the resistor labeled 3 . This action enables transmission on the extended bands (136-174 MHz and 400-520 MHz).
: Replacing the stock monolithic crystal filters (MCF) with tight, high-performance ceramic filters significantly sharpens selectivity. This reduces bleed-through from adjacent channels during crowded DX contests or emergency nets.
Navigating crowded amateur bands requires better selectivity than operating on wide-open marine channels. Adding an External Pre-Selector or Filter