Beschreibung : The objectives of this spacecraft were to provide communication channels for the automatic voice, automatic digital, and secure voice communication networks of the Department of Defense. The cylindrical spacecraft, 2.74 m in diameter and 3.96 m high with eight solar array curved panels generating 520 w, carried single-frequency conversion transponders with a bandwidth of 410 MHz to carry up to 1300 duplex voice channels, or a million data bits per second.
Kennedy Space Center post stamp and Titan 3 C satellite.

USA 540 - image retouchée ?

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DSCS-2 A1 & DSCS-2 A2 (SATELLITES) · TITAN 3C