[Boatanchors] Is 4657 same animal as the 8072?

[Singley, Rodger]

This is good info to have as I keep an eye out for spares for my Signal
One CX-7 which uses an 8072 final.  I run into a lot of the Motorola
numbered tubes at hamfests so I can add the 4657 to my "look for" list.

Rodger WQ9E

> -----Original Message-----
> From: boatanchors-bounces at mailman.qth.net [mailto:boatanchors-
> bounces at mailman.qth.net] On Behalf Of Carl
> Sent: Sunday, October 18, 2009 9:23 PM
> To: Sandy; Glowbugs reflector; boatanchors at mailman.qth.net
> Subject: Re: [Boatanchors] Is 4657 same animal as the 8072?
> 
> 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
> 
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