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[Fwd: [Amps] Design around an 8938 for 432MHz, circa 1980?]

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Subject: [Fwd: [Amps] Design around an 8938 for 432MHz, circa 1980?]
From: sm3mxr@swipnet.se (Einar Persson)
Date: Sun, 21 Jul 2002 22:07:20 +0200
Thanks to both Steve and Harry for the information.

73, Einar


> The amplifier was also in the 22nd edition of Bill Orr's Radio Handbook.
> It's on pages 22.125 thru 22.132.
>
> 73, Harry, W3IIT
>
> At 03:36 PM 7/21/02 +0000, Steve Thompson wrote:
> >On Sunday 21 July 2002 13:54, Einar Persson wrote:
> > > Hi all
> > > Anyone familiar with this 432MHz amplifier model, built around 1980?
> > > The tube is a 3CX1500C7/8938 and it is a stripline type amplifier,
> > > similar to the one
> > > described by K1FO in the ARRL UHF/SHF book, but this one has slightly
> > > different
> > > sizes on the box/stripline and a different input circuit.
> > > The stripline is made of thick (3.2mm) circuit board material and the
> > > plate tuning capacitor
> > > is only one "flapper".
> > > Is there anyone who knows where I can find the description of this
> > > amplifier design?
> >I have a copy of an article by Tony Souza, W3HMU, that matches your
> >description. It comes from Ham Radio, June 1977.
> >
> >I can send you a copy (contact me directly) or I can scan it and put it on a
> >web page if there's general interest.
> >
> >Steve
> >_______________________________________________
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> >Amps@contesting.com
> >http://lists.contesting.com/mailman/listinfo/amps
>
> Visit the Mt. Airy VHF Radio Club at:
> <http://www.ij.net/packrats/>http://www.ij.net/packrats/
> Info on VHF/Microwave Nets, Beacons & Subscription to Cheesebits
> Beacons at 50.080, 144.284, 222.065, 432.295, 903.071, 1,296.251, 2,304.037,
>  3456.220, 5,760.200 and 10,368.200 MHz from FM29JW
>
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