Bodenseesender

The Bodensee transmitter was transmitting equipment of the SWR (formerly the Southwest Radio ) for medium wave (until 2004 also for short wave ) when Meßkircher district Rohrsdorf.

The station was shut down and decommissioned on 8 January 2012 by SWR. The blast took place on 10 October 2013. From this transmitter site was last SWR cont.ra, the information program of the SWR, broadcasted in the period 5-23 clock. It was broadcast on the frequency 666 kHz with a transmitter power of 100 kW (up to 2007: 150 kW).

The 244 meter high guyed mast main end of Lake Constance transmitter was the tallest building in the district of Sigmaringen.

History

The station building of the Lake Constance transmitter

Sign of the SWR

The Bodensee station was built in 1964 as a successor to the to date by the then Südwestfunk in Bad Durrheim, Reutlingen, Sigmaringen and Ravensburg -powered medium-wave transmitter whose frequencies ( and to some extent their assets) were claimed for use by the Germany radio. The shortwave transmitter from the Bad Durrheim was relocated to Lake Constance transmitter. On 24 October 1964, the Bodensee station went into operation.

Medium wave

From 1964 until 31 December 1992, the Lake Constance stations broadcast the program SWF1 on medium wave, then the new S4 Bodensee radio was on, because not enough were FM frequencies are available for this. At the same time, the transmission power of 300 kW was reduced to 150 kW. Since 1 July 2002 SWR cont.ra will be broadcast by the station. For cost reasons, it is operated in July 2005, only 5 to 23 clock and Saturdays and Sundays 7-23 clock.

The medium-wave transmitter used until 1978 a directional antenna, which consisted of four each 137 meters high, insulated against ground radiating transmitting masts, which were arranged in a parallelogram. With the introduction of the Geneva wave plan mid-1970s one of these masts was dismantled, replaced by a 244 -meter-high, insulated against ground, self-radiating lattice mast and rebuilt in Rhine-Hesse Nierstein. Another mast of this quartet was transferred in 1982 to build a new directional antenna to a few hundred meters, the other two 137 -meter towers served as a reserve and were dismantled in 2005.

In the 244 -meter-high radio mast, which serves as omnidirectional antenna during the day hours, and the like all the masts of the Bodensee transmitter is isolated from earth, the backstays are such that they cause for the operating frequency of 666 kHz without parasitic radiations, are grounded at the anchor blocks could and - with the exception of the lowest backstay - do not release insulators.

Geographical coordinates of the 244 meter high transmission tower:

• 48 ° 1 ' 24 "N, 9 ° 6' 59" O48.0234166666679.11625 ( October 2013 dismantled )

Geographical coordinates of the three 137 meter high masts:

• 48 ° 1 ' 15 " N, 9 ° 7' 0" O48.0208333333339.1165277777778 ( early 2012 dismantled )
• 48 ° 1 ' 21 " N, 9 ° 7' 16" O48.0224444444449.1210277777778 ( beginning of 2005 dismantled )
• 48 ° 1 ' 15 " N, 9 ° 7' 6" O48.0209722222229.1184722222222 ( beginning of 2005 dismantled )

Shortwave

Until October 19th 2004, a short- wave transmitter was operated on the site of Lake Constance transmitter on the frequency 7265 kHz on the last the program was spread by SWR3. When transmitting antennas were a dipole antenna angle (48 ° 1 ' 29 " N, 9 ° 7' 6" O48.0248333333339.1183333333333 ) and a cage antenna (48 ° 1 ' 24 "N, 9 ° 7' 12" O48.0234166666679.1198888888889 ).

From 20 October 2004, the German wave used this frequency for their program in DRM mode.

In early 2005, the short -wave transmitter and the dipole antenna has been mined, only the cage antenna remained. The plant was sold to Madagascar and is there for the state radio Nasionaly Malagasy in use.

Closure and decommissioning of the station

The Bodensee station was finally shut down on January 8th, 2012 at 23:00 clock. The SWR was following a default by the Commission for determining the financial needs of broadcasters who made ​​this as a condition of funding for the establishment of a nationwide coverage of the programs of ARD stations via DAB.

On February 7, 2012 at 13:41 clock the 137 -meter high mast Reserve end was dismantled ( precipitation by caps that the anchor rope ). The 244 -meter-high main transmission mast was on October 10, 2013 dismantled ( precipitation by caps of the anchoring ropes by explosive charge ) after the measuring units mounted on him had fulfilled their tasks for the future use of wind power in space Meßkirch.

On October 10, 2013, the transmission tower was blown up and removed afterwards.

Gallery

• Medium-wave antennas

The foot of the 244 meter high main mast end

The 137 -meter high mast end reserve

The foot of the 137 meter high mast end reserve

The two medium-wave Transmission towers (left: 244 meters, right: 137 meters)

• Shortwave antennas

Shortwave Cage antenna of the transmitter Bodensee

The foot of the short-wave Cage antenna of the transmitter Bodensee