[Boatanchors] Is 4657 same animal as the 8072?

[Sandy]

KInda figured that!  Motorola likes to have "control" (or did anyway) of the 
land mobile market.  I remember when they lobbied the FCC to give them a 
"continous" mobile band in the VHF range including amateur 2 meter space and 
relegate them to somewhere else in the spectrum.  Don't remember the year, 
but there was a big fuss about it from the hams.

Thanks to everyone who gave me an answer.

73,

Sandy W5TVW

----- Original Message ----- 
From: "Carl" <km1h at jeremy.mv.com>
To: "Sandy" <ebjr37 at charter.net>; "Glowbugs reflector" 
<glowbugs at piobaire.mines.uidaho.edu>; <boatanchors at mailman.qth.net>
Sent: Sunday, October 18, 2009 9:23 PM
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
>
> ----- 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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