Hi Michael,
not sure what ¡®sidebands¡¯ you are asking about. The ¡®spurs¡¯ I see strongly in receive on 6m, 10m and weaker progressively as I go LF in frequency, are every 500Hz, strongest at 1500Hz and 3Khz.
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It would be nice if Hans could confirm if he has seen this on is own rigs or not, to know if we are chasing an inherent problem or it is unique to build our build quality.
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I am a bit sceptical about ¡®cures¡¯ that cause problems to go away (or change characteristics), after resoldering. Surely a joint is either good or not connected.??? (I checked for ¡®dry joints visually during construction), Or there is a short somewhere, but this could cause non functioning, not poorer performance?
I did wonder if it was down to how well the anodised panels of the case electrically bond to each other but they do seem to connect.
interesting observation but WSJT-X successfully decoded a fairly weak station dead on 1500Hz on 6m with a strong spur right on top of it, so maybe not such a big problem as I thought, but can still hear an annoying whistle as I usually monitor the frequency through an amplified loudspeaker.
73 Ken g4apb?
