IC-7100 Accessory Audio Squelch Circuit
Channel: Ham Radio A2Z
Date: 2022-08-07

This is just a quick to share some success I just had building an audio switching circuit to squelch the audio coming out of the ACCessory connector.  One of the quirks with the IC-7100 is that the audio out of the accessory jack does not go through the squelch circuit.  That means that on a VHF/UHF FM frequency, you would hear constant white noise/static if you pipe this audio to your car stereo or any other amplifier system.
The Accessory connector does have a pin that tells you if the squelch is opened or closed.  So I connected the squelch output to the audio switch and piped that output into my truck audio system.  Now I have squelched audio!
I intend to make this into a full project video in the future.
I am considering designing a printed circuit board for this circuit.  Please leave a note in the comments if you would be interested in buying a circuit card or maybe a complete kit for this circuit.

The audio switch is based on information I found on this website:
https://neatcircuits.com/audiosw/index.html

Please check out the companion website for this channel here:  https://a-2-z.tech/

Thanks for watching!