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Re: [Amps] Maximum tolerable SWR for dual 3-500Z amps

To: Joe Isabella <n3ji@yahoo.com>, Amps <amps@contesting.com>
Subject: Re: [Amps] Maximum tolerable SWR for dual 3-500Z amps
From: Pete Smith <n4zr@contesting.com>
Date: Fri, 21 Nov 2003 07:46:20 -0500
List-post: <mailto:amps@contesting.com>
At 07:05 AM 11/20/03 -0800, Joe Isabella wrote:
I've done it with coax, so I know it works -- just not the best solution. One last
thing, you want to start on the high end of your loading C -- if you try to start out with too
little loading, you can get one of those nasty arcs (of course, that's true regardless of the
load's Z).


I second Joe's comment, but also think it's wise to be sure that the loading capacity required is within range -- that is, that you can tune for an output peak is within the range of the loading capacitor. I routinely run my SB-220 into an 80-meter array, which is cut for the low end of the CW band, in the phone DX window at >3:1 SWR, but the loading capacitor is only a little over half-scale.


73, Pete N4ZR The World HF Contest Station Database was updated October 29. 2469 stations are listed -- 29 new and over 100 updated. Are you current? www.pvrc.org/wcsd/wcsdsearch.htm



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