Icom M700 Mods [extra Quality]

: 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.

Consulting the original service manual for specific circuit diagrams. icom m700 mods

The M700 was designed for intelligibility on a pitching ship, not for musical SSB audio. The stock audio path rolls off highs above 2 kHz, making voices sound "boaty" and muffled. : To allow programming of memory banks A

The original HM-28 hand microphone for the M700 has been discontinued for decades. If you need a new mic, you'll need to modify the radio or its connector. The M700 was designed for intelligibility on a

: The Push-To-Talk (PTT) line can be triggered via an optocoupler isolated circuit driven by an external USB interface like a SignaLink USB, Digirig Mobile, or a homebrew interface. This isolates your computer from the radio, avoiding ground loops and RF feedback in your audio. Legal and Operational Warnings