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Re: [Amps] AL-572 high input SWR

To: k4ro@darkstar.k4ro.net, amps@contesting.com
Subject: Re: [Amps] AL-572 high input SWR
From: Gudguyham@aol.com
Date: Mon, 10 May 2004 07:17:55 EDT
List-post: <mailto:amps@contesting.com>
In a message dated 5/9/04 11:06:50 PM Eastern Daylight Time, 
k4ro@darkstar.k4ro.net writes:


> Before I go digging deeper, does anybody have any
> experience with this amp or suggestions on what may
> have failed?  Thanks for any assistance.
> 
> 

HI Kirk, it sounds to me that you have a dead tube.  There are 4 tubes in 
that amp, and if one is dead it will upset the whole apple cart.  My bet is on 
one dead tube or maybe 2 of them.  Time to start subbing in a few new tubes for 
testing.  If a tube is dead, the filament can still be lit so don't go by 
that.  Good Luck 73 Louie
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