[Amps] High Input Swr SB-220

[Allen (Marty) Martin]

Apparently
----- Original Message -----
From: "2" <2 at vc.net>
To: "Allen (Marty) Martin" <kg7da at foxinternet.net>; " AMPS"
<amps at contesting.com>
Sent: Wednesday, March 26, 2003 4:49 AM
Subject: Re: [Amps] High Input Swr SB-220


>
>
> >I have a SB-220 With high input swr. I have ~2.5-1 on 75 at 3850 and much
> >higher than that at 7200. Switches seem to be in sync. Anybody have any
> >Ideas?  The caps  look to be the right value. I don't want to start
tweaking
> >the coils if I don't need to. Shorted coax? I can drive the amp but of
> >course my solid state rig doesn't like the high swr.
> >I wonder if anybody has any data about tuning the input coils?
> >
> The fix is to up the design Q of the Pi tuned input to something that
> solid-state radios will take.  This is covered in the Nov./Dec., 1990 QST
> article. [orig manuscript on my Web site]
>
> cheers, Marty
>
> -  R. L. Measures, a.k.a. Rich..., 805.386.3734, AG6K,
> www.vcnet.com/measures.
> end
>
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