Mods _best_ - Icom M700
The ICOM M700 is a classic, rugged marine HF SSB transceiver. While excellent for its time, modern users (ham radio operators, overlanders, and marine enthusiasts) often perform modifications to improve its functionality, expand frequency coverage, or add missing features.
If the front-panel 10-key buttons do not work, toggle the small switch S1228 located on the Matrix board. 2. Memory Expansion (SRAM Mod) icom m700 mods
The standard 48-channel memory can be expanded to 480 channels via an SRAM expansion mod, making it more practical for storing numerous amateur bands and nets. Mode & Audio Upgrades: The ICOM M700 is a classic, rugged marine HF SSB transceiver
Warning: This involves soldering on delicate surface-mount pads. If you are uncomfortable, find an experienced tech. The ICOM M700 is a classic











