QMX LB lost Rx on some bands
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My QMX had been working great. When listening on 40m during some qrn, but not actually thunderstorm at my qth, QMX shut down. Rebooted and rx on 80, 60 and 40 m has gone. -50db or so on audio sweeps. Very strong sigs still just audible
30m and 20m are not affected and signals coming through fine. Reinstalled firmware, still no rx on the lower bands. Transmit side working as before, full RF out on all bands. What might have have failed?? The bandpass MUX? Rich G4PCE |
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Reiner,
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Thanks , I'll do that next. Would you think that as? 30m and 20m are still perfect on receive? then the first 74CBT3253 is undamaged. Rich?
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Rich Collins
dl8lrz Reiner