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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.

🧪 Test: After mod, verify you can tune to 14.200 MHz in USB and transmit a low-power carrier into a dummy load.

Elliott Liggett's GitLab Repository: Contains the most comprehensive technical write-ups, schematics for SRAM mods, and instructions for user-friendly ham conversions.

AM Emulation: The M700’s AM mode (A3H) actually operates as upper sideband with a carrier. It provides a robust, "loud" signal that is well-suited for broadcasting on non-marine frequencies.

If the jumper is cut or missing, the radio may be locked to marine channels.



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Mods //free\\: 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.

🧪 Test: After mod, verify you can tune to 14.200 MHz in USB and transmit a low-power carrier into a dummy load. icom m700 mods

Elliott Liggett's GitLab Repository: Contains the most comprehensive technical write-ups, schematics for SRAM mods, and instructions for user-friendly ham conversions. The ICOM M700 is a classic, rugged marine HF SSB transceiver

AM Emulation: The M700’s AM mode (A3H) actually operates as upper sideband with a carrier. It provides a robust, "loud" signal that is well-suited for broadcasting on non-marine frequencies. Elliott Liggett's GitLab Repository : Contains the most

If the jumper is cut or missing, the radio may be locked to marine channels.