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Re: Odd 20 meter calibration


 

My version 1 PCB installed an earlier band table with the band centers on the FT8 Frequencies. I'm having this sort of trouble on 80 and 40 meters.
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I think there may be a problem if the test frequency is too far down the slope of the BPF curve resulting in low signal feedback for the tests. I've mentioned it to Hans and he told me to try changing the 80/20 band swap, but I haven't quite figured out what he meant yet. ?My BPF filters are skewed quite a bit on some bands (but the manual indicated this was nothing to worry about at the time).
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I'll try to figure that out, but I'll also try moving the band centers and see what that changes in the calibration test.
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