Microwave Bands from 1.2 GHz and up are rapidly becoming in demand for commercial applications. The radio amateur community is at great risk of losing the assigned frequency bands. Microwaves present lots of possibilities for Weaksignal work, EME, SETI and Radio Astronomy. Radio Astronomy is the Science of Astrophysics in the radio spectrum from Low Frequencies to as high as 300 GHz. Many bodies radiate in addition to signals in the Visible, signals over the total Electro-Magnetic Spectrum.
Bodies appear as sources of noise in the frequency domain.
The measurement of the type, quantity and location of these sources of radiation form the observational part in Radio Astronomy. Early Radio Astronomy - The Connection with Amateur Radio Amateur Radio Astronomy has become more popular with the advent of more sensitive receivers and surplus Antennas. Many participants in radio astronomy are also involved in one or more aspects of Weak Signal in Amateur Radio. Some will be drawn from amateur radio into astronomy and vice versa. SETI or the Search of Extraterrestrial Intelligence is the Science of Detecting Intelligent Signals from other Civilizations.