Unlike modern radios with continuous digital tuning, the classic M700 is primarily channel-based. Some technical projects involve modifying the "Clarifier" circuit. By adjusting the voltage-controlled oscillator (VCO) parameters, it is possible to change how much the frequency shifts when the fine-tuning knob is turned, providing more flexibility when trying to zero-in on a signal. 3. Audio Processing Enhancements
of the M700 (like the M700TY or PRO) that you're working on? IC-M700 Mods - Elliott Liggett - GitLab icom m700 mods
On the MAIN unit, locate (a 1k ohm resistor) associated with the noise blanker switching transistor. Replace it with a 10k ohm potentiometer wired as a variable resistor. This allows you to adjust the threshold of the blanker, turning it from an on/off mute into a usable noise reducer. Dial in just enough blanking to kill the pops without squashing weak signals. Unlike modern radios with continuous digital tuning, the
Unlike modern radios with continuous digital tuning, the classic M700 is primarily channel-based. Some technical projects involve modifying the "Clarifier" circuit. By adjusting the voltage-controlled oscillator (VCO) parameters, it is possible to change how much the frequency shifts when the fine-tuning knob is turned, providing more flexibility when trying to zero-in on a signal. 3. Audio Processing Enhancements
of the M700 (like the M700TY or PRO) that you're working on? IC-M700 Mods - Elliott Liggett - GitLab
On the MAIN unit, locate (a 1k ohm resistor) associated with the noise blanker switching transistor. Replace it with a 10k ohm potentiometer wired as a variable resistor. This allows you to adjust the threshold of the blanker, turning it from an on/off mute into a usable noise reducer. Dial in just enough blanking to kill the pops without squashing weak signals.