Relay
Two spacecraft, designed and built by RCA, to test intercontinental satellite communications technology. Relay was a communications satellite of the active repeater type, in which signals from one ground station were picked up and rebroadcast to another station by the satellite's internal equipment. Relay 1 remained operational for more than 2 years; Relay 2 was used in thousands of tests and experiments and in some 40 public demonstrations through September 1965. Both were launched by a Delta rocket from Cape Canaveral and had a mass of 78 kg.
| spacecraft |
launch date |
orbit |
| Relay 1 |
Dec. 13, 1962 |
1,319 × 7,440 km × 47.5° |
| Relay 2 |
Jan. 21, 1964 |
1,961 × 7,540 km × 46.4° |
Related entry
• Telstar
Related category
• SATELLITES AND SPACE PROBES
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