Intelsat IVA communications satellite, 1975.
© National Aeronautics & Space Administration / Science & Society
The first of the upgraded series of Intelsat IV communication satellites is being mated to the upper stage of its launch vehicle. 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.