Here are details about a :
Space commemorative cover
or Space Cover.
Kosmodrom / Plats : USA
Stämpeldatum: 9 Mar. 1975
Händelsetyp : Uppskjutning
Startplatta / Plats : USA Vandenberg SFB (CA)
Bemannad / Robotisk Mission : Robotisk
Uppdragsmål/Typ : Militär / Hemlig
ou?/where?: au sol - ground
autographe?: non - noneBeskrivning : In their elliptical orbits they would move very slowly over the northern hemisphere for most of their orbital period, allowing interception of microwave line-of-sight communications beams. Since they would move slowly through the beams during their orbit, a constellation of such satellites was required to monitor Soviet communications throughout the day.
Vandenberg post stamp and Afsatcom satellite. Nyckelord :
#Planet,
#Satellit,
#Telekommunikation, Är UTANFÖR Rymdrevyerna. Senast ändrad: 09/04/2015 @ 12h17
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USA 729 | 8,- |
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Sida : future · Ref: USA 729 Rymdhändelse : JUMPSEAT 3 (AFSATCOM) (SATELLITE) · TITAN 3B
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