Doesn't appear to say very much. Other than the BW difference [RF/IF BW
might be more than ultimate AF BW], and provided that the demodulated
audio is free of IMD and other obnoxious distortion, I don't see why NR
at AF wouldn't be essentially the same as at IF. Obvious differences in
the mechanisms to do it, and I'm sure there are dozens of nits that will
be picked over this, but if you can find the signal in the noise [or the
noise obscuring the signal] at the IF frequency, I can't see any reason
why you can't do it at AF just as well.
73,
Fred ["Skip"] K6DGW
Sparks NV DM09dn
Washoe County
On 8/23/2017 4:06 PM, Walter Underwood wrote:
Discussion appears to be here.
https://uk.groups.yahoo.com/neo/groups/SNR_group/info?v=1&t=directory&ch=web&pub=groups&sec=dir&slk=363
<https://uk.groups.yahoo.com/neo/groups/SNR_group/info?v=1&t=directory&ch=web&pub=groups&sec=dir&slk=363>
wunder
K6WRU
Walter Underwood
CM87wj
http://observer.wunderwood.org/ (my blog)
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