OPS-0757 (Tacsat)

ACOMSAT (also known as TACSAT 1, OPS 0757, or Tactical Communications Satellite) was an communications satellite designed and built by Hughes Aircraft Corporation under the direction of the United States Air Force Space and Missile Systems Organization (SAMSO). TACOMSAT was used by the United States Department of Defense to explore the feasibility of geostationary satellite communications between ground stations comprising fixed bases, military field units, aircraft, and ships.