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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 most sought-after modification for the IC-M700 is unlocking the transmitter to cover the entire HF spectrum (typically 1.6 MHz to 24 MHz or 30 MHz). This allows the radio to be used on amateur radio (HAM) bands. The Diode Matrix Modification
The Ultimate Guide to Icom IC-M700 Mods: Expanding Your Marine HF Transceiver
If over-modulation or "splatter" becomes an issue after changing microphones, you can adjust the internal Mic Gain potentiometer () and the ALC (Automatic Level Control) threshold ( R118 ). Backing these off slightly will warm up your transmitted voice audio significantly. 4. Interfacing for Digital Modes (FT8, JS8Call, Winlink)
On standard M700 models, cutting or removing opens up the transmit matrix.
Icom M700 Mods [updated] -
This public link is valid for 7 days and shares a thread, including any personal information you added. This link or copies made by others cannot be deleted. If you share with third parties, their policies apply. Can’t copy the link right now. Try again later.
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. icom m700 mods
The most sought-after modification for the IC-M700 is unlocking the transmitter to cover the entire HF spectrum (typically 1.6 MHz to 24 MHz or 30 MHz). This allows the radio to be used on amateur radio (HAM) bands. The Diode Matrix Modification This public link is valid for 7 days
The Ultimate Guide to Icom IC-M700 Mods: Expanding Your Marine HF Transceiver Can’t copy the link right now
If over-modulation or "splatter" becomes an issue after changing microphones, you can adjust the internal Mic Gain potentiometer () and the ALC (Automatic Level Control) threshold ( R118 ). Backing these off slightly will warm up your transmitted voice audio significantly. 4. Interfacing for Digital Modes (FT8, JS8Call, Winlink)
On standard M700 models, cutting or removing opens up the transmit matrix.