Compared to the radio waves used in normal radio broadcasts, the microwaves used for satellite transmissions?

Answer 1

They have a much higher frequency and shorter wavelength.

Answer 2

Intergalactic communication via radio would contain 10^7+ 3 hundred and sixty 5 days time lags. Even such short variety INTRAgalactic communication would basically decrease the lag into the ten^2+ or so variety for various the Galaxy. the objective of SETI is to seek for different clever existence yet any communication is possibly to be of the 'letter in a bottle' type, accomplishing out in the wish of appearing some good, someplace, with long term communication with a close-by entity, basically a faint possibility. be conscious that if we do capture a stray sign, there will be a query of no count if it fairly is secure to open a communicate.

Answer 3

Long wavelength radio waves are reflected back by certain parts of the lower and upper atmosphere - such as the ionosphere and troposphere, so therefore microwaves are used as these have higher energy and smaller wavelengths (~1 and 20 cm.)

Mobile phone also use microwave signals to communicate with base stations.