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[AMPS] New 3-500Z

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Subject: [AMPS] New 3-500Z
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Date: Thu, 27 Feb 1997 20:06:23 EST
On Fri, 28 Feb 1997 00:14:24 +0000 Ron Hooper <> writes:

>> In a message dated 97-02-26 18:34:20 EST, (Lee 

>sounds. The graphite plate is used a lot in RF sealing equipment. I
>junked down several machines a few back, all used carbon plate tubes.
>We had some equipment that was used for sealing baby diapers. I forgot
>the number's but were Amprex, glass envelope about the same size as
>3-500's and 3-1000's. All were low mu triodes. I think overload is the
>main reason for that type of design also. 
>Ron W4WA

I'll bet you that those tubes were 5868's  Ron. Very common in that
service. About the same size as 3-500's but with a 3-1000/4-1000 base.  A
great source for cheap sockets at least!

73....Carl   KM1H

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