[Elecraft] Noise Reduction

Fred Jensen k6dgw at foothill.net
Wed Aug 23 19:58:58 EDT 2017


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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