I would like to retract my previous statement of problems...
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Something is going on, but upon further experimentation, it appears to be somewhere in my external connections and not internal to the QMX+. My suspicion is that me first noticing the birdies was just a function of the receive audio being externally attenuated, whereas the internal birdies stayed the same.
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I don't think anything is wrong with the QMX+... at least nothing changed inside of it. Something changed outside of it. I shall figure it out.
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My apologies, everyone, for the false start. 5 Watt penalty, repeat first QSO.
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73,
Joel