Icom M700 Mods ✦ Bonus Inside

The M700's microphone preamp is designed for dynamic marine microphones. If you are using a modern electret condenser mic (like a Heil headset), you need to add a 5-10 µF capacitor in series with the mic line (pin 1 of the mic connector) and also install a 2.2k ohm resistor to provide bias voltage. This will boost your transmitted audio to "broadcast quality."

The DSC upgrade requires a hardware modification and may require professional assistance. Consult an authorized Icom dealer or a qualified technician for this mod. icom m700 mods