Intelsat IVA communications satellite, 1975.

This was the first of the upgraded series of Intelsat IV communication satellites. Intelsat IVA F-1 was launched on 26th September 1975 into geostationary orbit over the Atlantic. INTELSAT, the International Telecommunciation Satellite Organisation, is jointly owned by all its member nations and has established a worldwide system of satellites which provide most of the world's international communications.