Icom M700 Mods High Quality «EXCLUSIVE»

The receiver uses a de-emphasis circuit (a simple RC filter) that kills treble. By changing a few capacitor values, you can get a much flatter, more pleasant audio response.

Some hams wire a small SPST switch to the filter board. When flipped, it swaps the 2.4 kHz SSB filter for the 500 Hz filter. This lets you use the radio for CW with the clarity of a dedicated contest rig. icom m700 mods

The Icom IC-M700 is a classic piece of marine HF (High Frequency) hardware. Known for its rugged construction and powerful 150-watt transmitter, it was a staple in maritime communication for decades. Today, many of these units have found their way into the hands of amateur radio operators and collectors who seek to adapt the radio for non-marine use. The Appeal of the IC-M700 The receiver uses a de-emphasis circuit (a simple

: Changing the coupling capacitors in the microphone pre-amplifier stage (on the Main Board) from allows more low-end bass response into the audio chain. When flipped, it swaps the 2

While modifying an Icom IC-M700 is a rewarding project that breathes new life into vintage commercial hardware, keep the following in mind:

The Icom M700 is not a SDR (Software Defined Radio). It won't give you a waterfall display or a narrow roofing filter. But for the price (often $150–250 at swap meets), you get a 150W transceiver with a receiver front end that rivals radios costing ten times as much.

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.