Oh and I forgot, ensure that your audio settings from the soundcard are HIGH level.
Too low and the QDX rigs won't see enough signal to interpret.
That would prevent any TX going out for sure.
Max the audio out first, turn everything to number eleven as they say in Marshal guitar amp
terms to confirm the rigs is getting enough audio.
Then dial it back to ensure a clean TX is being sent reliably.
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- 73 de Andy -