[Prev][Next][Index][Thread]
Re: Tube identificaion help (833)
Tesla List wrote:
>
> 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
Sounds like graphite anodes to me! The description fits them
perfectly. Never heard of a metal plate anywhere near that thick; it
would be very heavy!
Ed