[Elecraft] New APF Filter

[Bill W4ZV]

David Cutter wrote:
> 
> This begs the question or note, that if scanning mode is set up and 
> monitored by the P3 with the APF engaged, one could see where those very 
> weak and elusive signals are lurking in the shadows?
> 

I don't think so.  APF is working at the DSP IF stage which is well beyond
the (1st) IF OUT which the P3 and other panadapters such as LP-PAN use.  As
I said previously, I could detect no visible signal from 5R8RJ on CW
Skimmer's waterfall but it became audible when APF was engaged.  

73,  Bill

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