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Re: [Amps] Titan 425 Reflected Power

To: <g3rzp@g3rzp.wanadoo.co.uk>,"Jim Brown" <jim@audiosystemsgroup.com>, <amps@contesting.com>
Subject: Re: [Amps] Titan 425 Reflected Power
From: "Tom W8JI" <w8ji@w8ji.com>
Date: Mon, 25 Sep 2006 05:42:20 -0400
List-post: <mailto:amps@contesting.com>
> That's where I'd start. Is there a ground loop through the 
> AC supply, for instance? I've seen this sort of thing 
> happen when you get a current on the outside of the coax, 
> and the effects show up more at high power - I suppose 
> because the magnitude is greater. Another possibility is 
> some harmonic output from the amp. But I've seen from 
> funny things with ground loops that misbehaved at high 
> power, but not at low.

I doubt that. By ground loops I meant ground loops on the 
SWR detector board causing the reading to vary with 
frequency.

External loops that affect the meters unequally with power 
would never occur.

73 Tom 


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