Wikipedia
Intasat
INTASAT was the first satellite of Spain. It was designed by Spain's National Institute of Aerospace Technology.
INTASAT was launched on November 15, 1974 atop a NASA Delta rocket from Vandenberg Air Force Base. With a mass of 20.4 kg, it was launched piggyback with another satellite ( ITOS-G). It had a lifespan of two years, and carried a beacon experiment to study the ionosphere.