Category
page 1Signals intelligence satellites
Tselina
family of Soviet Union/Russian signals intelligence satellites

Orion
series of U.S. spy satellites
TRUMPET
series of reconnaissance satellites
Naval Ocean Surveillance System
series of signals intelligence satellites of the U.S. Navy
Jumpseat
series of reconnaissance satellites
Magnum
model of American signals intelligence satellite
Tongxin Jishu Shiyan
Chinese military satellite program operating in geostationary orbit
Samos-F
thumb|250x250px|Launch of SAMOS F2-3 (Ferret 2) on 1963-01-16
SAMOS-F or Air Force Program 102 refers to a series of SIGINT reconnaissance satellites launched and operated by the United States Air Force and National Reconnaissance Office during the 1960s. Initial priorities (in decreasing order) were to monitor radio waves in the frequency bands 2.5-3.2 GHz (S band), 9.0–10 GHz (X band), and 59-650 MHz. The intercepted data and their location were stored on magnetic tape, and subsequently transmitted to tracking and acquisition ground stations. Tracking stations were located in
Aquacade
model of American signals intelligence satellite
Canyon
United States spy satellite series
Mercury
series of three United States spy satellites