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 Post subject: No Audio!!
PostPosted: Wed Nov 07, 2018 8:17 pm 
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Joined: Mon Jul 23, 2012 6:25 am
Posts: 1143
The speaker/mic that we sell has an electret element which means that it needs a 3.3V DC bias to operate properly. If everything else works but you have no TX audio select the ADVANCED tab and MIC BIAS and set it to '1'. I've found the '25' is a good value for MIC GAIN when using the HobbyPCB mic.

I'm working on an inexpensive breakout box that will allow you use a standard 8-pin mic like Elecraft/Kenwood/Yaesu/Icom use and has a 1/8" jack for the speaker. It's will have an optional USB connection to allow audio/PTT to run other digital modes if you want.

73,
Jim WA2EUJ


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