[CQ-Contest] DSP copying CW

[Guy Olinger, K2AV]

On the MP, for those of us who like setting the pitch to 450 or 500 on CW,
setting the NR to "D", and setting the contour to 9 oclock is a DSP favorite
that seems to make signals "jump" out of the noise, as compared to EDSP off.
There is some kind of dynamic peaking effect. It doesn't appear to work at
say 700 hz.

73, Guy.

----- Original Message -----
From: "George Cutsogeorge" <w2vjn at rosenet.net>
To: <cq-contest at contesting.com>; "David O Hachadorian" <k6ll at juno.com>
Sent: Friday, November 30, 2001 12:53 PM
Subject: Re: [CQ-Contest] 756Pro: definition of 'ratty'


>
> It's true that there is no perfect AGC circuit.  The MP gain recovers so
> fast that it brings weaker signals up to full level inbetween dots and
> dashes of a stronger signal in the pass band.  This makes it very
difficult
> to copy a pile up.  Running with the AGC off eliminates this problem and
> improves ones rate when CQing.  You have to be willing to ride the RF gain
> control, however.
>
> I have never found a DSP of any kind that could improve ones ability to
copy
> CW signals.
>
> George, W2VJN
>
>
> ----- Original Message -----
> From: "David O Hachadorian" <k6ll at juno.com>
> To: <cq-contest at contesting.com>
> Sent: Friday, November 30, 2001 1:03 AM
> Subject: Re: [CQ-Contest] 756Pro: definition of 'ratty'
>
>
> >
> > I have gotten used to operating cw with the agc turned off,
> > to allow a wider dynamic range in a pileup situation. I
> > think it also improves the s/n on pw signals.
> >
> > When I tried to do this recently, operating as a guest op
> > at a station equipped with a Mark V, I could hear some
> > definite digital artifacts on loud signals. The artifacts
> > were not there with the agc turned on, but I don't like
> > the sound of agc compression on cw.
> >
> > After going into the menus and turning off all DSP, the
> > signals were completely clean, and I operated the entire
> > contest that way.
> >
> > Dave Hachadorian, K6LL
> > Yuma, AZ
> > K6LL at juno.com
> >
> >
> > On Fri, 30 Nov 2001 08:50:53 -0500 (EST) Dennis OConnor
> > <k8do at diamondcs.net> writes:
> > >
> > > When I am out in the shack, which is also my work shop, I always
> > > flip on
> > > one of the rigs and leave that tuned on someone's qso while I am
> > > doing
> > > other things... As I was reading your message I suddenly realized
> > > that even
> > > though I have a selection of DSP rigs on the operating bench, it is
> > > always
> > > the Onmi VI+ that gets turned on...  I wonder if there is some
> > > subtle
> > > distortion level with the DSP rigs that makes me subconciously reach
> > > for
> > > the non DSP rig to listen to for the hours that I am working on the
> > > tractors, etc... (Yes, the Omni has a DSP filter that can be
> > > switched on,
> > > but I don't use it because the audio annoys me)
> >
> >
> > --
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> >
>
>
> --
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> Administrative requests: cq-contest-REQUEST at contesting.com
>


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