I have found that I use a 6' cable between SB220s and rigs for best SWR.
I also tune the input coils using this length and advise my customers to do
the same when they use their amps.
73
Jim W7RY
-----Original Message-----
From: KB8NTY
Sent: Saturday, January 10, 2015 1:01 PM
To: amps@contesting.com
Subject: Re: [Amps] Alpha Input SWR
My Amp Supply LK-500ZB GG. amp manual also states to use a 6' length coax
between your exciter's RF output and the LK-500ZB RF input connector.
Possibly the feeder length does factor in!
-73-
Ross KB8NTY
http://www.rossradio.net/
https://groups.yahoo.com/neo/groups/groundradial/conversations/messages
***************************************************************
"Collins Radio recommends a 20.5 ft. coax between exciter and linear amp.
.Perhaps this would work with the Alpha.
73, Jim - w5ifp@gvtc.com"
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