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When I was still having the problem I did have a 10uF capacitor in series with the audio output and the radio mic input, is that what you mean? It still did not function properly. As for the radio battery it is only two weeks old and I have used it for voice transmission and it has held up well.
Hello,
I am working on a tracking system for an amateur high altitude balloon. Basically I am taking NEMA sentences from a GPS reciever and using a microcontroller to create an APRS packet and encoding it into AX.25 (BELL202) audio frequency keying tones. Everything works great up to there...
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