I was considering the way it was handled as time went on.? I have a copy of a 1952 (or so) Radio Amateur's Handbook.? Their definition of UHF and the like has changed over the years.? They had experimental setups with a 2K21 (?) klystron.
Harvey
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On 11/6/2023 7:01 PM, Dr. David Kirkby, Kirkby Microwave Ltd wrote:
On Mon, 6 Nov 2023 at 23:51, Harvey White <madyn@...> wrote:
I think that in some cases it had to do with whether or not you
had (or
could) use waveguide.? Presumably if you could/had to do
waveguide, that
was a "microwave".? I think at one time it included 400 Mhz, as
technology advanced, it crept up to 1 Ghz, and I rather suspect it's
around 2 at this time.
Just lots of guesses here.
Harvey
100 GHz is possible with coaxial cable. I doubt 1 THz is, but I don¡¯t know. (Yes, I could use Google ???)
