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I have to admit I cheated. I Googled "Mullard museum", but before I found one, I found **broken link removed**. Look in the lower right-hand corner. It's made by Telefunken, and it's the same part number.JimB said:Yes! Ron H you are the man!
It is a KS9-20, or 723A/B Klystron, output power about 10mW and the frequency is tunable between about 9 and 10 Ghz.
Look here http://www.r-type.org/exhib/aaa0552.htm for more information.
JimB
Ron H said:I have to admit I cheated. I Googled "Mullard museum", but before I found one, I found **broken link removed**. Look in the lower right-hand corner. It's made by Telefunken, and it's the same part number.
HiTech said:go ahead and say the answer if you know it. JimB you are right on the money w/ your thinking.
Yep, I would do the same thing.zevon8 said:Note to self: copy picture to my computer, then repost, thus not leaving trail to origin of picture.
/sarcasm off, LOL