Postage stamps: industry and technology - Germany / Federal Republic of Germany 1975 - 50 Pfennig

A new postage stamp continuous series with representations from industry and technology replaces the postage stamp continuous series "Federal President Heinemann". The postage stamps for 40 Pfennig, 50 Pfennig and 100 Pfennig appear as the first values ​​of this series with the inscriptions Deutsche Bundespost: 50 Pf: Erdbefunkstelle Raisting Raisting is a small idyllic place in Upper Bavaria and the endpoint of one of the most modern radio bridges for the intercontinental telecommunication service , Huge parabolic antennas are directed at the sky. Automatically controlled, they can follow the position variations of the synchronous satellite. They receive and amplify the extraordinarily weak reception signal, transmit it to the terrestrial radio and cable network and thus to the receiver. The answer comes back the same way, and a strong transmitter radiates it to the satellite. Sending and receiving via the same antenna, but at different high frequencies with many remote stations. The earth station Raisting, with which the German Federal Post already participated in the first transmission attempts in 1963, today has 4 antenna systems: antenna 1 for the Indian Ocean region, antenna 2 and antenna 3 for the transatlantic traffic and another antenna for the German -French community satellite project »Symphony«.