Re: [Amps] Using old amps on WARC query

["Carl" <km1h@jeremy.mv.com>]

I have a mid production 76PA 3 holer that needed a change. Havent seen any 
with a later choke which may have been from a 78 sold later as a retrofit.
Carl
KM1H


----- Original Message ----- 
From: "Joe Subich, W4TV" <lists@subich.com>
To: <amps@contesting.com>
Sent: Sunday, June 30, 2013 10:45 AM
Subject: Re: [Amps] Using old amps on WARC query


> 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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