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[TenTec] Type of Speech Processing in Jupiter/Pegasus?

To: <tentec@contesting.com>
Subject: [TenTec] Type of Speech Processing in Jupiter/Pegasus?
From: dufferjames@hotmail.com (James Duffer)
Date: Sat, 23 Feb 2002 09:59:34 -0600

>From: "George, W5YR" <w5yr@att.net>
>To: Joe Word <joe_word@yahoo.com>
>CC: tentec@contesting.com
>Subject: Re: [TenTec] Type of Speech Processing in Jupiter/Pegasus?
To: <tentec@contesting.com>
>Date: Fri, 22 Feb 2002 13:50:42 -0600
>Soft compressors and clippers have been used for years and are effective
>for FM and AM modes, but can have limited effectiveness for SSB. The
>problem is that if the processing is made aggressive enough to be
>effective, the distortion products increase rapidly. It ends up a Catch-22
>situation. The wattmeter goes up but articulation goes down.

Not a problem (apparently) for some SSB operators....as long as they are "30 
over S9"

>The r-f clipping and filtering approach which prevents the distortion
>products from appearing in the output passband is still regarded by most
>folks as the most effective process to both increase average power and
>increase articulation.
>72/73/oo, George W5YR - the Yellow Rose of Texas
>Fairview, TX 30 mi NE of Dallas in Collin county EM13qe
>Amateur Radio W5YR, in the 56th year and it just keeps getting better!
>QRP-L 1373 NETXQRP 6 SOC 262 COG 8 FPQRP 404 TEN-X 11771
>Icom IC-756PRO #02121  Kachina #91900556  IC-765 #02437
>All outgoing email virus-checked by Norton Anti-Virus 2002
>Joe Word wrote:
> >
> > What about distortion and gain?
> >
> > Joe  K9MAN
> >
> > Absolutely correct Carl. It is the digital
> > implementation of a logarithmic
> > operational amplifier. Best way to increase average
> > power.
>TenTec mailing list

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