In article ,
Paul Burridge wrote:

If it's tunable it can't be a magnetron, anyway, surely? They resonate
at a fixed frequency determined by the mechanical cavities machined
into them.

Not true at all. There are a pile of different tuneable maggies that
were built for Military Uses, in all bands from C, S, clear up thru Ku.
It is just the civilian commercial maggies that are fixed tuned, because
the FCC, DOC, and other regulators don't want untrained operators
messing around with the tuning controls.

Bruce in alaska who used to be one of those regulators......
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