However, the real reason I'm posting is to ask whether the linearity testing depends on the receiver performance or whether it's independent of it?
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My revision 1 QMX is one of the ones with wacky 20 meter BPF behavior and I never got back to trying some of the later suggestions to improve the problem as it worked more or less adequately for usual band conditions. This results in funny level curves on 20 meters. I think this was a common problem with some of the earlier units.
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Should I drop everything and try to get the receiver working right before worrying too much about the variations in SSB calibration on 20 meters?
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thanks in advance....
The way the calibration works, is indeed by operating the receiver at the same time as a test transmission. If the receiver is not working then it could well cause the calibrations to not work properly.?
