Icom M700 Mods [updated] -
The Icom IC-M700 is a legendary marine HF transceiver prized by radio amateurs for its rugged 150W PA and reliable performance. While built for the high seas, several modifications can transform it into a capable "shack" radio for ham operations. Essential Frequency & Transmit Mods
Are you planning to use the M700 for voice SSB or are you looking to set it up for digital data modes like Winlink? IC-M700 Mods - Elliott Liggett - GitLab icom m700 mods
Programming Unlocking: To allow programming of memory banks A and B, ensure that jumper W33 (W1033) is not installed. If the 10-keypad is unresponsive, toggle switch S1228 on the Matrix board. The Icom IC-M700 is a legendary marine HF
- Open the radio casing.
- Locate the "D" (Diode) matrix on the control board.
- Typically, cutting or adding a specific diode opens the transmitter to "General Coverage" (TX 1.6–30 MHz).
- Note: This varies heavily by the specific revision of the logic board. Consult the specific service manual for your serial number prefix.