Thanks guys for the input.  I had an off list conversation with Lyle and got
my answer, Wayne was included too.

The scenario was the morning 75M 'old guy' net.  During the lulls, there was
a ~15 db above the -110 db noise floor signal (I LOVE the P3!).  Auto notch
would not take it completely out until I lowered AGC THR to 7 (from 16).  

I restarted, cycled through auto and manual notch, no joy with auto until I
dropped the THR.

If I understand it correctly, as you raise THR and/or SLP, it gets harder
for the auto notch to remove weaker signals (which this apparently is).

So now my goal is to find a reasonable compromise or define two macros to
make simple and quick changes, one for ragchewing and another for DXing.
But first I want to better understand what THR and SLP do and how they
interact.  (NOT tonight!)

Thanks again all (grazie e ciao!),

Rick wa6nhc

-----Original Message-----
From: Pierfrancesco Caci


It nicely notches away a broadcasting carrier at 7200 kHz here, tried
with THR 12, 16 and 20. 

Pf

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