Berlin-Britz transmitter
The station Berlin- Britz was the main transmitter of the former RIAS. It was founded in 1946 on the site of a former nursery.
History
By 1947, a 800 -watt transmitter, which was placed on the back of a U.S. military truck was used. The transmitting antenna was a taut between 2.30 meters high wooden poles T antenna. In March 1947, these T- antenna was replaced by a self-radiating 60 -meter high lattice tower, which was increased in June 1947 to 100 meters after the " Lili Marleen station" - a wheeled Soldatensender from the Second World War - was available. In 1949, the same amount, the first 100-kilowatt transmitter was during the Berlin blockade for the transmitter Britz installed and shortly thereafter the radio mast with a new transmission tower replaced. Dismounted transmission tower was rebuilt in the yard.
In 1953, the facility received the first 300 -kilowatt transmitter in Germany, which was built by Telefunken. 1978, the first station was put into operation, the amplifier was adjusted according to the principle of dynamic amplitude modulation. In 1988, the first fully transistorized large transmitter with an output of 100 kW for the frequency 855 kHz operation.
In 1954, the first transmitting antenna for shortwave was built in the form of a horizontal folded dipole on the station premises. Since this antenna later claims was no longer enough, in 1983 a folded Ganzwellendipolantenne was built.
The commissioning of a second medium wave transmitter of the present-day north-western tower was dismantled in 1961 and a little further west, re-erected at a distance of 88 meters to the south-east tower. This happened at the time, as a directional radiation with minimum to the Balkans was needed for the second frequency in order not to disturb the transmitter situated there.
Until 1978, the reception power of the RIAS has been massively reduced jammers the former GDR. To counteract this fact, a steep beam antenna for the frequency of 990 kilohertz ( kHz) on the night with circular polarization signal was constructed in the form of a crossed dipole in 1978, which was fixed at five grounded, rope anchored steel tubular poles, each 30.5 meters high, steep was radiated into the ionosphere with an output of 300 kilowatts ( kW ), while during the day the 160 -meter high mast served as an antenna.
The backstays, which until now were divided by insulators were replaced in 1983 by means of continuous backstays, which are grounded with chokes at the end credits foundations. 2004, the backstays were exchanged again.
In 1995, not only the steep -directional antenna had to be shut down, also had the services of two medium-wave transmitter that spread the program of the Germany radio after the dissolution of the RIAS end of 1993, will be reduced to 100 kW for 990 kHz and 25 kW for 855 kHz. A little later the transmitter for 855 kHz DRM test transmissions and from 2001 for the DRM plan operation was - with a few exceptions for the transfer of major sporting events - used.
On 22 December 2004 tore one of the new backstays in the lowest level of the 160 - meter boom, which led to a multi-day transmitter failure on 990 kHz.
Today
The 1949 installed 100-kilowatt transmitter was until the mid-1980s in operation since 1993 and is located at the Museum of Transport and Technology.
Of the two masts, both of which are isolated from earth and were operated as a self-radiating transmission towers, exists today only the larger ones. However, they were increased several times and measure 146 meters (Southeast mast ) or 160 meters ( north-west tower ).
The crossed-dipole antenna of the RIAS was in operation until 1995. After that, they had to be shut down for EMF reasons. However, they remained until 2004 on the station premises.
After the short wave radio ( 6005 kHz) was badly damaged by fire in the late summer of 2007, it was decided not to take it in operation because the repair costs appeared too high.
The frequency 6190 kHz was - since the end of October 2011 German wave had set her German -language radio program - the last shortwave frequency from Germany, Austria and Switzerland, which radiated a German language program with the Germany radio around the clock. On this short-wave frequency in the 49 - meter band dazzled the Germany radio four times (each at 1:05, 6:40, 11:05 and 21:05 clock time) a shipping forecast in the current program daily. The plant was taken from the end of April 2012, and was not put into operation because of the high costs that would be incurred for the repair. End of May 2012 confirmed the Germany radio the end of broadcasting.
On the morning of September 19, 2012, the Germany radio finished the digital medium wave broadcasts from Berlin- Britz. The dismantling of the 1949 built, 146 -meter-high mast, which broadcast this digital broadcasts, found from the 5th to November 8, 2012 apparently with the help of an appropriate mobile crane instead.
A relocation of the FM frequency to the Berlin TV tower took place on November 29, 2012 at 9:59 clock; from Berlin- Britz sent so that finally only the medium wave frequency 990 kHz, which was also shut down on September 4, 2013 at 11:38 clock for cost reasons.
Former transmission frequencies
Analogue radio (MW)
Analogue radio (KW)
Analogue radio (FM )
Digital audio broadcasting ( MW DRM)
- Germany Radio knowledge ( in FM -like sound quality)
- News - loop ( in phone -like sound quality)