image:Bodenseesender.jpg, 250px, The facility of Bodenseesender in September 2005. Two of the three mentioned 137 metre tall masts were already demolished. The remaining ≈240 metre ("Direktor") mast can be seen right in the picture. In the left part of the picture, there is the 244 metre tall main transmission mast of Bodenseesender Bodenseesender ( en, Lake Constance transmitter) was a radio transmission facility of VoA, US Südwestrundfunk, SWR (until 1998 SWF) near Meßkirch-Rohrdorf in Southern Germany for

medium wave Medium wave (MW) is the part of the medium frequency (MF) radio band used mainly for AM radio broadcasting. The spectrum provides about 120 channels with more limited sound quality than FM stations on the FM broadcast band. During the daytime ...

established in 1964. It shut down on January 8, 2012, and one month later, on February 7, 2012, the last mast was demolished.

Südkurier The Südkurier is a regional daily newspaper in Germany serving the regions northwest of Lake Constance, Hochrhein and Black Forest with its headquarters Konstanz, Germany. The paper appears with a circulation of around 130,000, six times per w ...

of February 8, 2012
Ein stählerner Gigant knickt ein
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Background

Bodenseesender had been used since July 1, 2002 for the propagation of SWR Cont.Ra on the medium wave

frequency Frequency is the number of occurrences of a repeating event per unit of time. It is also occasionally referred to as ''temporal frequency'' for clarity, and is distinct from ''angular frequency''. Frequency is measured in hertz (Hz) which is eq ...

666 kHz, u v.a.. Until 1978 the aerial of the medium wave transmitter consisted of 4 guyed steel framework masts, which are insulated against ground. In the mid 1970s two of these masts were dismantled. One of them was rebuilt on a new site not far away from it earlier site in order to form with one of the two masts, which were not dismantled a directional aerial, while the other was rebuilt at Nierstein in Rhineland-Palatina. On the site of the latter mast a guyed steel framework mast was erected, which is also insulated against ground. At the construction of this mast, the length of the upper guys were chosen in such way, that there is no disturbation of its radiation pattern when grounded directly at the anchor blocks. So the upper guys do not have any intermediate insulators. They are only insulated toward the mast. However the guys of the lowest level are divided by one intermediate insulator electrically in two parts. Until October 19, 2004 there was a shortwave transmitter on the site of the Bodenseesender, which was used to transmit the program of SWR 3 on 7265 kHz. For the shortwave transmitter, there was a small cage aerial at 48°1′24″N and 9°7′11″E and a dipole aerial at 48°1′29″N and 9°7′5″E. In spring 2005 the two guyed masts which were situated at 48°1′19″N, 9°7′12″E and at 48°1′24″N, 9°7′18″E were demolished.

Geographical coordinates

240 metres

* * (dismantled) * (dismantled)

244 metres

References

External links