View Full Version : Way OT, Klystron Specs?

04-08-2010, 02:15 PM
Heres and odd one for you guys. Anyone have specs on a Varian VA-259E Klystron?

Liger Zero
04-08-2010, 04:03 PM
I will inquire of my friend who deals with high energy tubes.

...that is my if my assumption that a "klystron" is a high-energy tube of some kind and not some odd lathe attachment I am unaware of. :D

04-08-2010, 05:52 PM
Klystron...that was Michael Rennie in "The Day the Earth Stood Still." No, wait it was Klaatu.

Gort, Klaatu barada nikto.

04-08-2010, 05:57 PM
Ive got no specs (unless the big old valve book over there -> has them in, but Im pretty sure it doesnt), but Im interested anyway ;)
What you building?


Spin Doctor
04-08-2010, 06:01 PM
Don't have any handy but I do there is a cube 20 miles on a side packed full of them on Altair 6

04-08-2010, 06:11 PM
Couple different thing. One is for a small plasma source and the other is a cyclotron.

04-09-2010, 01:00 AM

I could not find much info on that tube. It is probably an old design. Varian was bought by a company called Communications and Power Industries, www.cpii.com. Another good source for information is Richardson Electronics, www.rell.com. You could give them a call and see if they can get you a data sheet or a replacement number and data on that. The only reference I could find indicates that that tube tops out at about 7.8 GHZ and 20 Watts continuous power.

Hope this helps.


Paul Alciatore
04-09-2010, 01:57 AM
Sorry, I have never used any klystrons smaller than 30 KW.

04-09-2010, 01:58 AM
IEEE members can access this paper:

http://ieeexplore.ieee.org/Xplore/login.jsp?url=http%3A%2F%2Fieeexplore.ieee.org%2Fi el6%2F8203%2F24832%2F01123134.pdf%3Farnumber%3D112 3134&authDecision=-203

which has the following abstract which sounds promising:

The design and performance of a high-power, reflection type microwave amplifier is described. The amplifier utilizes four individually matched silicon IMPATT diodes and a hybrid-circuit power-combiner scheme to achieve a CW output of 8 watts at 5.23 GHz with 6-dB gain and a power added efficiency of over 5 percent. FM and AM noise performance of the IMPATT amplifier is compared to that of a medium power klystron. The design of the hybrid-circuit power combiner is outlined and test results obtained on the four-way combiner are presented.

- Bart

Liger Zero
04-09-2010, 09:37 AM
My friend doesn't have any information on that tube, sorry.

04-10-2010, 06:22 AM
Thanks for trying. It was worth a shot!