aprs.fi on Twitter: "I fixed it! 470 nF on the earphone output of the iPhone, where the signal was loudest, stopped the oscillation. No visible change on the TX audio - scope shows L and R channels and the cap is only on one of them. #baofeng #aprs APRS-K1 ...
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What's up on aprs.fi: Baofeng & BTech APRS-K1 & iPhone problems
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