I also understand that he wanted to find out how to
make a microwave transmitter out of a discarded microwave oven.

Apparently your not a ham operator, because making a transmitter out of
a microwave can be done. If you think that's Friggin retarded then I
suggest you go to rec.radio.amateur.homebrew and tell them how friggin
retarded it is because some of those boy have done it. A microwave is a
transmitter, they run between 2.to 3 GHZ some of the older ones run as
low as 1 GHZ. Tell you want little boy, get your ham license, and I
tell you of all my wonderful inventions I have created over the years.