Descrizione : Cap Canaveral post stamp and satellite Titan 3 C.

The Initial Defense Communications Satellite Program provided the Pentagon with its first geosynchronous communications system. IDCSP satellites were spin-stabilized 26 sided polygons, 86 cm in diameter, covered with solar panels, and had a mass of 45 kg. Eight were dispersed on a single Titan 3C rocket into slightly sub-synchronous orbit where they would drift about thirty degrees per day. The idea was that a backup was always visible to the earth station if one failed. IDCSP satellites transmitted reconnaisance photos and other data during the Vietnam war. They were succeeded by NATO and DSCS true geosynchronous satellites.

USA 374 - picture enhanced ?

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IDSCP 20 THRU 27 (IDSCP 4 1 thru 4 8, DSCS-1 8 thru 1 15) · 8 SATELLITES · TITAN 3C