The DECCA station Zeven was a transmitter of the Decca navigation system near Zeven in Lower Saxony in Germany. The DECCA station Zeven used as the main antenna end a 93 -meter-high, insulated against ground, guyed lattice steel mast and as a reserve antenna features a 46- meter high guyed lattice steel mast, which is also insulated against ground.
The DECCA station Zeven belonged until 1992 to 1952 unique German DECCA chain 3F for radio navigation in the air corridors to and from West Berlin, which consisted of the transmitters Brilon, Stadtkyll and Coburg- Lauter. In this chain, he took over the function of the "Green " station and broadcast on 127.1100 kHz.
From 1968, the station also served as Purple station of the Frisian chain and finished the frequency 71.433 kHz. From 1992 until the cessation of operation of the Frisian Decca chain on 31 December 1999, this unit was operated exclusively for this DECCA chain.
Differential Global Positioning System
Following closure of the plant was not used until 2004. Since this year, it serves to broadcast medium wave DGPS signals on the frequency 303.5 kHz. The ID of the reference station 763 together with the DGPS station United Mohrdorf (20 km northwest of Stralsund ) and the DGPS station on Helgoland cover these three stations, the entire German North Sea and Baltic Sea coast from. Although the DGPS station on Heligoland the German North Sea coast also could cover alone, the DGPS station Zeven was put into operation in addition to have a higher availability for the port approaches on the Elbe, Weser and Ems. The range of the transmitter in each case is about 285 km.