I have recently finished a QMX 60m-15m which appears to work, but not quite as it should.
It transmits OK in all bands, although with much reduced power on 14MHz and up. What?
bothers me most is that the hardware tests do not seem to match expected behaviour.
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1.? In Audio-sweep-40m.png (enclosed) the red race is a mere 20db-30db below the yellow
???? one, not the 60db that operating manual says it should be. Enclosed only for 40m, behaviour
???? in all other bands is similar (graphs not included).
2. LPF sweeps seem right. Perhaps in the 15m band the drop starts too soon?
3. RF sweeps do not nearly look like those presented in the manual (I enclose the full set).
4. IM-sweep-40m.pnq? (all other bands show smimilar graphs) are not quite the example
???? presented in the manual. I am unable to decide if this is a problem.
5. ADC-IQ-40m.png does not nearly look like the nice sinusoidal shapes shown in the
??? manual. I have included only the graph for 40m, they look similar for other bands.
?
All hardware tests performed with .25 firmware and 11V.
?
Where should I start looking?
?
