to en.wikipedia. 2007-09-19 01:13 Andy120290 631×478×8 (36721 bytes) The Syncom IV-F5 satellite is deployed during the STS-32 mission. {{PD-USGov-NASA}}
refer to en.wikipedia. 2007-09-05 22:27 Andy120290 531×476×8 (22225 bytes) Syncom IV-3 is deployed during STS-51-D. {{PD-USGov-NASA}} English applies to jurisdiction:
construction of SYNCOM, a GEO satellite
(Whalen, n.d.). These efforts resulted in the successful operation of two TELSTARs, two
RELAYs, and two SYNCOMs by 1964
National Aeronautics and Space Administration. Lyndon B. Johnson Space Center. 2/17/1973 reference URL: https://dp.la/item/8f18a4716ee1b95af07b83bfc312ac06