[ARC5] What's Dis?

[Dean Davidson]

On 28/04/2015 00:34, Robert Eleazer wrote:
> A friend of mine picked up a box of tubes at a flea market this past weekend.  It has what appear to be NIB 1625's and so forth; I'll be making an inventory.  But it also has two "somethings" that I have never seen before.
>
Possibly like a CV35 Klystron
<http://www.radiomuseum.org/tubes/tube_cv35.html>
or a CV43 TR cell
<http://www.tubecollector.org/cv43.htm>

Both these have the "finned copper heatsink in the middle" - actually a 
copper plate.
I have both of these sitting on a shelf as misc radar stuff.
Some are complete, some are missing the waveguide attachments.
Also, given the manufacture date of these - late 1939 -1940
they are an interesting artefact because of the early glass/metal seals.
We have come a long way in 75 years!

For more info see Terman, Electronic & Radio Engineering page 1026

Hope this helps!
Dean