Yup, I've had dismal results with DSP boxes as well. They provide hundreds of
microseconds of delay, if not milliseconds; ADC bit noise as well.
The FL3 delay is in the tens of microseconds; comparisons between that and the
internal audio filter didn't yield any appreciable differences with regard to
the pop.
I did manage to reduce the pop by putting an emitter follower between the audio
sample point and the input of the AGC circuit. I imagine a source follower
would work even better.
Al
----- Original Message -----
From: Steve N4LQ <n4lq@iglou.com>
Date: Wednesday, December 15, 2004 12:29 pm
Subject: Re: [TenTec] Looking for Omni-546C
> I tried putting a DSP filter inside the agc loop on a Triton and
> it made the
> pop problem a 100 times worse due to the log delay. Don't count on
> that
> working.
> Steve N4LQ
> ----- Original Message -----
> From: <k2zn@rochester.rr.com>
> To: <tentec@contesting.com>
> Sent: Wednesday, December 15, 2004 12:24 PM
> Subject: Re: [TenTec] Looking for Omni-546C
>
>
> > An even better implementation of the SCAF filter would be to get
> it within
> > the audio AGC loop. I set up my Omni A that way with a Datong
> FL3 -
> > outstanding!
> >
> > Al, K2ZN
> >
> >
> >
> > _______________________________________________
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> > TenTec@contesting.com
> > http://lists.contesting.com/mailman/listinfo/tentec
> >
>
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