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Re: Tube identificaion help (833)
to: David
The 833C (C stands for commercial duty) has very similar electrical
characteristics but the plate will take a lot more current and/or heat than
the standard 833A.
Regards,
Dr.Resonance-at-next-wave-dot-net
-----Original Message-----
From: Tesla List <tesla-at-pupman-dot-com>
To: tesla-at-pupman-dot-com <tesla-at-pupman-dot-com>
Date: Wednesday, February 24, 1999 10:08 PM
Subject: Tube identificaion help (833)
>Original Poster: David Trimmell <davidt-at-pond-dot-net>
>
>Hello, I know there are several folks on this list who have used 833
>transmitter tubes in Tube coils. I have two 833's that came from a local
>radio station, and on the boxes they had marked "833-A", but these tubes
>have a thick plate, aprox 1/4". The plate is unlike the standard
>"sheet-metal" variety, it is a light grey-silver, almost like pewter in
>color and is somewhat rough on the surface, with close inspection. The
>overall construction quality is significantly superior to the Amprex 833A I
>have. The light grey color of the plates seems to light in color for
>graphite, but these tubes do run very cool in comparison to the Amprex. No
>markings on the envelope, but there is a serial number on the ceramic
>insulator at the base of the plate.
>
>Any Ideas guys?
>
>I understand that there is a 833-A, 833-C and a 833-D, what are the
>characteristics of these? I have the data-sheets on the 833-A, but cannot
>find any info on the other varieties. Appreciate any help!
>
>Regards,
>
>David Trimmell
>
>