I had hoped that 2.0.16 would fix this problem, but it looks unchanged.
If I tune to 50.400 MHz (the local 6M AM frequency) and select AM mode
with a 6.6 kHz BW, there are 4 spurs in the AM passband with the
strongest at -100 dBm (S 4.5). If I turn SR on, the spurs move and
decrease in amplitude, but there are still 4 spurs with the strongest at
-114 dBm (S2+). If I select USB, LSB, DSB, CWL or CWU the spurs
disappear from the panadapter. I don't know if this happens on the
lower frequencies, but it makes AM unusable on 6M. I just checked
50.300 on FM and the same issue exists. The spurs will be stronger than
many FM simplex stations on that frequency.
Why does changing mode cause a change in the spurs? I wouldn't expect
the DDS to be reprogrammed when the mode changes.
Is this a known problem that will eventually be fixed? BTW, I've never
seen this on my 5000A.
73,
Clay W7CE
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