Re: Manual Notch

paul newcombe <G6YZC@...>

PowerSDR/Thetis has a very nice option called  MNF (? off top of my head). This allows you to program over 1000 preset filters that seem to attenuate upto 100dBm (?) on any given frequency at a chosen band width.  I used it to block out the 49MHz baby monitors.

Paul N2EME

From: <> on behalf of Ken Alexander <k.alexander@...>
Sent: Tuesday, April 10, 2018 9:30 AM
Subject: Re: [SDR-Radio] Manual Notch
That explains why I get caught for speeding so often!  


From: Simon Brown <simon@...>
Sent: Tuesday, April 10, 2018 8:06 AM
Subject: Re: [SDR-Radio] Manual Notch

I think 10Hz away.
I’ll add a super DX demod window when I find time.
Simon Brown, G4ELI
From: <> On Behalf Of Ken Alexander
Sent: 10 April 2018 12:49
Subject: Re: [SDR-Radio] Manual Notch
Simon's a wizard, but those carriers are 1 Hz away from your signal.  I wish you luck!  (I'd like to see that as well.  The NDB band is pretty crowded here too!)
Ken Alexander

From: david via Groups.Io <zinc65@...>
Sent: Tuesday, April 10, 2018 6:42 AM
Subject: [SDR-Radio] Manual Notch
Please Sir,
I know you are busy, and there are lots of requests flying around for new,
exotic features. But, can you bring the creation of a manual notch near to
the top of your list? The attached screenshot illustrates the issue. The
waterfall resolution is good enough to read the morse ident (PST), in this
case. But the surrounding carriers make it impossible to extract any audio
other than the carriers.
I'm getting on very well with the rest of the package. I even came to terms
with the scheduler, and using NB2 makes huge improvements to code reception.
But these carriers close to code signals make some reception impossible,
even with narrow filters at maximum length. And no, the auto notch doesn't
Best Wishes
David, GM8XBZ

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