Icom M700 Mods Extra Quality May 2026

To enable transmit on all covered frequencies (approximately 1.6 MHz to 23.999 MHz), check the Logic Board for jumper W37 (W1037) .

While rated at 150W PEP, internal adjustments (usually found in the service manual ) can fine-tune the ALC (Automatic Level Control) to ensure you aren't overdriving the final amplifiers during data operation. Comparison: IC-M700PRO ICOM--IC-M700-user-manual.pdf - QRZCQ

Some regional versions of the M700 have locked memory banks (A and B) to prevent users from accidentally overwriting critical marine frequencies. icom m700 mods

Modifications often involve tapping into the internal PTT (Push-to-Talk), Line In, and Line Out lines to create a DIN plug interface for a PC or Pactor modem.

Page 3. SECTION 1 SPECIFICATIONS. GENERAL. Frequency Coverage: Receive. Transmit. 1.6MHz ~23.9999MHz. 2.0MHz - 2.9999MHz. 4.0MHz ~ IC-M700 - Single Sideband Radiotelephone - ICOM Canada To enable transmit on all covered frequencies (approximately

Newer modifications include adapting the 8-pin connector to accept high-quality dynamic microphones or XLR inputs, which can significantly improve audio punch in difficult conditions. 4. Mode and Power Adjustments

Solder the jumper (or a wire bridge) back together to unlock general frequency transmission. Modifications often involve tapping into the internal PTT

If your 10-key keypad isn't responding, look for switch S1228 on the Matrix board. Toggling this switch can often restore keypad functionality for field programming. 3. Digital Modes and Pactor Integration

To allow full front-panel programming of banks A and B, ensure that jumper W33 (W1033) on the Logic Board is NOT installed.

is "opening up" the transmitter. In its stock configuration, the radio often limits transmission to marine bands.