Mike,
For strong signals the filtering may let some of the opposite sideband
get through the filters.
What is the relative S-meter reading for the true sideband and the
opposite sideband?
73,
Don W3FPR
On 2/18/2016 11:56 AM, Mike Murray wrote:
After doing some more testing in last weekends RTTY contest, it appears
that I made an erroneous statement as to what I was hearing and where.
What I found is that as I tune down in frequency and find a signal that
will decode, if I then tune down another 170 Hz I'll hear the inverted
signal. Still using dual passband DSP filter at 400 Hz and 400 Hz, 8 pole
roofing filter as before. I have a brief video on uTube showing the effect
at:
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