Icom M700 Mods ^hot^ -

The , a legacy marine HF transceiver first sold in 1984, is a popular candidate for modifications to make it suitable for amateur radio use. Because it was originally designed for maritime service, its standard features often lack the flexibility required for ham radio operation. Core Functional Modifications

By default, the IC-M700 is restricted to marine bands. You can unlock continuous transmit coverage (approx. 1.6 MHz to 23 MHz) by adjusting jumpers on the : icom m700 mods

The first was a classic: the narrow CW filter. Eli found a NOS Murata ceramic filter on eBay, a tiny, fragile thing that cost more than the radio. Installing it meant decoupling the RF board with a special tool he had to 3D-print himself. His soldering iron, a fine-point Metcal, hovered like a hummingbird’s beak. One slip, and the whole board was a paperweight. He didn’t slip. The result was miraculous—a scalpel’s edge of selectivity. Signals emerged from the mush like clean bones from a fossil. The , a legacy marine HF transceiver first

by performing an SRAM expansion. Detailed schematics for this ramboard mod are available via community repositories. Audio & Digital Modes: External Audio Interface: You can unlock continuous transmit coverage (approx