Surveillance and Spy Satellite Frequencies
(Mostly Wideband Spread Spectrum/LPI channels)

	 220 MHz -  450 MHz 
	 1.2 GHz -  1.4 GHz
	 1.7 GHz -  1.9 GHz (1.76-1.84 active)
	 1.9 GHz -  2.2 GHz (2.115 active)
	 4.9 GHz -  5.0 GHz  
	 5.5 GHz -  8.8 GHz  
	10.6 GHz - 12.8 GHz (11.7-12.2 active)
	17.8 GHz - 22.5 GHz (Low Orbit SIGINT/IMINT Birds)
	
	23.6 GHz - 24.0 GHz (Low Orbit SIGINT/IMINT Birds)
	25.5 GHz - 25.7 GHz (Low Orbit SIGINT/IMINT Birds)
	22.8 GHz - 33.5 GHz (SIGINT Birds)
	42.5 GHz - 47.0 GHz (High Orbit SIGINT/IMINT Birds)
	50.3 GHz - 52.4 GHz (High Orbit SIGINT/IMINT Birds)
	78.0 GHz - 85.5 GHz (High Orbit SIGINT/IMINT Birds)
	86.3 GHz - 98.3 GHz (High Orbit SIGINT/IMINT Birds)

also, 95 - 275 GHz is also used for government surveillance applications and operations, however; the usage is fairly limited.

Note: Surveillance satellite can be anywhere between 200 MHz and 325 GHz, mostly spread spectrum.

VLF Emission and Subcarrier Detection

Common Eavesdropping Frequencies used by Amatuer Eavesdroppers

Professional and Law Enforcement Bugging Frequencies

Surveillance Device "House" Frequencies/Bands

Federal Surveillance Frequencies

Surveillance and Spy Satellite Frequencies

Spread Spectrum and Frequency Hopping Bug Frequencies

Bandwidth Resolutions and Filters

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