[TCML] Klystron use?

[olivaw at gmx.co.uk]

On Mon, 8 Jun 2009 18:49:35 +0000, you wrote:

>Channel 28 is at 554-560 MHz.  I know next to nothing about Klystrons but I thought they operated at microwave frequencies even higher than that? 

They're used in high power UHF TV transmitters; not useful for Tesla coil
stuff even if you can supply the massive power supply and cooling (a
straight klystron is only 33% efficient or so, so lots of heat comes out.