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Re: [Amps] Using old amps on WARC query

To: amps@contesting.com
Subject: Re: [Amps] Using old amps on WARC query
From: "Joe Subich, W4TV" <lists@subich.com>
Date: Sun, 30 Jun 2013 10:45:43 -0400
List-post: <amps@contesting.com">mailto:amps@contesting.com>

I believe the early PA76 series amps *all* had plate chokes resonant
at 25 MHz and will not work on 12 meters.  It's been a long time since
I last looked at one.

73,

   ... Joe, W4TV


Please anyone can tell me the factors to consider, including burning
tank components, when operating old linear amplifiers on the WARC
bands, especially 12 meters.

Alpha 76 PAC meaning the 3 tube version.
TenTec Titan One
Dentron DTR-2000
ICOM IC-2KL

All these amps have factory-type conversions to TEN meters already
done. The Alpha has the swamping input taken out.  Other than that,
all amps are stock.

Thanks for all specific info... 73,

Charles Harpole
k4vud@hotmail.com

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