Program: Stacksat

US military program composed of 3 similar satellites named POGS, TEX & SCE. This program is also known as P87-2

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General

Designation	POGS or USA 56: 20560 / 90031A TEX or USA 57: 20561 / 90031B SCE or USA 58: 20562 / 90031C
Launch date	11 Apr 1990
Country of origin	United States
Mission	military: study ionospheric effects on signal propagation
Perigee/Apogee	741 km
Inclination	90°
Period
Launch vehicle	Atlas #51

TEX is a USAF satellite, POGS & SCE are from US Navy

TEX illegally downlinks on 328.25 MHz, a band reserved for radio astronomy. Unfortunatetly it cannot be switched off.

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External resources

sat-index articles

http://www.craf.eu/tex.htm

Technical data

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Specifications

Prime contractor	CTA
Platform
Mass at launch	68 kg each
Mass in orbit
Dimension
Solar array	15 W
Stabilization	gradient
DC power
Design lifetime	3 years

possible downlink: 327.250 or 328.250 MHz

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