Does there is a Klystron for VHF & UHF?

Does there is a Klystron for VHF & UHF? !

while studyhood i talk the Klystron for microwave never think that it can be used for UHF / VHF ?

is it only dimensions issue , i guess it sure will be large in case of UHF?

thanks all

They were used for high power UHF TV transmitters. I don't know if they are still used. VHF ones have been made but I am not sure if they have been commercially used. Try a google search for "vhf klystron" or "uhf klystron".

http://epaper.kek.jp/a98/APAC98/4D015.PDF

Keith.

Work horse at those frequencies back in the 1950s and 1960s. Look for vintage products or legacy replacement product companies. Varian used to dominate back then.