I still have 4 of those tubes with slices in the bakelite where the
surgery was performed. They were driven by a 20A to some unknown output
power on 80-20M.
I believe it was P&H who offered a commercial amp with those tubes.
Carl
KM1H
----- Original Message -----
From: "Edwin Karl" <edk0kl@centurytel.net>
To: <amps@contesting.com>
Sent: Wednesday, February 11, 2009 4:05 PM
Subject: [Amps] 1625
>
> As I recall, having built one of those amps way in the before time,
> Sylvania
> and
> National Untion brought the beam forming electrode out to the base.
> Apparently
> others manufactured the tubes with internal connections. No doubt two
> plants
> were
> involved making the tubes.
> 5 for a buck, what a deal, but then I'm and old guy.
>
> ((73))
> ed K0KL
>
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>
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