[Boatanchors] Is 4657 same animal as the 8072?

[Carl]

Yes. It is Motorolas usual way of ripping off customers with a "special" 
tube. GE ran their systems just fine with a 8072! The 4657 supposedly was 
more shock resistant but since its Moto, that is questionable.

Carl
KM1H

----- Original Message ----- 
From: "Sandy" <ebjr37 at charter.net>
To: "Glowbugs reflector" <glowbugs at piobaire.mines.uidaho.edu>; 
<boatanchors at mailman.qth.net>
Sent: Sunday, October 18, 2009 5:42 PM
Subject: [Boatanchors] Is 4657 same animal as the 8072?


> Some of you land mobile radio people may be able to tell me if.......a
> Motorola 4657 planar conduction cooled beam power tube is equivelent to 
> the
> RCA 8072 tube?
>
> I have several of these NOS and curious to know.
>
> All indications are they are the same, but I'd like to hear it from 
> somebody
> that has dealt with them before.
>
> 73,
>
> Sandy W5TVW
>
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