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Re: [Amps] Henry 4 K-2 SWR

To: "'Bud Governale'" <>, <>
Subject: Re: [Amps] Henry 4 K-2 SWR
From: "Phil Clements" <>
Date: Wed, 7 Dec 2005 23:32:26 -0600
List-post: <>
You can perform a test to see what might be causing the problem, Bud.
First, short cross the contacts of RY-1 by wrapping a small gauge solid
copper bus wire between the 2 normally open contacts. Check the pass-through
VSWR into a 50 ohm load. If no change, remove the jumper and put it across
the contacts of RY-2. If no change, the problem is inside the SWR bridge, or
in the coax run between the two relays. If one of the relays was the
culprit, they will need to be replaced. This will narrow the problem down to
the component level, and you don't even have to power up the amp to do the

Good hunting!

Phil Clements, K5PC

> The only components in the path, with the amp turned off, is the bypass
> relay and the SWR bridge - all internal to the
> amp. Can these be causing the exciter to see the higher SWR and infinite
> 6M SWR? Is the internal SWR bridge the culprit?
> Any ideas?
> 73,
> Bud W3LL

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