Y3S

DIZ is a former, often used time signal transmitter in the East German Nauen near Berlin. He sent on shortwave 4525 kHz. The call sign from 1980 was Y3s.

The large radio station Nauen was established as the world's first transmission plant in April 1906 by a Telefunken engineer. As early as 1916/17 it sent twice a day a time signal for various institutions and celestial navigation of naval and merchant navy. The time signal Nauen was broadcast on long wave 3900 meters (77 kHz) and was used throughout Europe and the North Atlantic. By 1935, the transmitter was switched on shortwave 4525 kHz received the call DIZ.

After being destroyed at the war's end in 1945 the station 1955/56, went back on the air. He now sent with about 5 seconds the kilowatt points in the 24 - hour continuous operation; the minutes identifier was a long line for each second zero. The time signal was controlled by the Geodetic Institute Potsdam. In the 1990s, the time signal was turned off after the expansion of the DCF77 transmitter near Frankfurt / Main.