does some interesting communication exist in the band of 2.4 GHz?
thank you


I don't know.if anything interesting exists there or not. I can tell you that
my own videosender operates there in FM-TV mode, whenever I feel like turning
it on. (for either video or audio)

It is also a ham band, so ham radio and ham tv operators can operate there
also.

It's also a band used for some wireless security cameras.

and it's also an ISM band, for industrial, scientific, and medical devices.

Although I haven't seen anything there yet except for my videosender, but then
my scanner is extremely exremely very poor at picking up in the 2.4 ghz band.

My videosender reciever does a much much much better job of picking up signals
in the 2.4 ghz band on the channels it operates on, but is limited to only four
frequencies (channels).

however, the ARRL repeater book does list some ham tv repeaters up there
(dependiing on your location, none in my area) and some ham radio repeaters
there (again depending on your location).

and some 2.4 ghz cordless telephones operate up there also.