The transmitter Cremlingen is a large medium wave transmission facility established in 1962 for transmitting the program of Deutschlandfunk on 756kHz near Cremlingen-Abbenrode.
The first transmitter was installed in 1962. It transmitted the program of Deutschlandfunk on 756 kHz and used as aerial a 137 metre high guyed steel framework mast. In 1964/65 a second transmitter for the propagation of Deutschlandfunk on 548 kHz was installed. It used as aerial a 240 metre high guyed steel tube mast, which is insulated against ground in combination with an insulated guyed steel framework mast for a radiation pattern with a minimum toward Southeast.
According to the waveplan of Geneva only one transmitter on 756 kHz with a maximum power of 800 kilowatts and a maximum power of 200 kilowatts with a radiation minimum toward Southeast was allowed. Therefore the height of the steel tube mast was reduced from 240 metres to 188 metres in order to optmize it for 756 kHz. Also the height of the steel framework mast, which was used until 1978 for a directional aerial for 548 kHz was shortende. Its height is since 1999 99 metres. The height of the 137 metre mast was not changed, because its height is optimized for 756 kHz and was used after 1978 as backup aerial.
Until the middle of the 90ies the transmission power was 800 kilowatts at daytime and 200 kilowatts at nighttime. Since the middle of the 90ies transmission power is 200 kilowatts on nighttime as well as on daytime.
From 2001 to 2003 the program of the pop music radio MEGARADIO was transmitted on 630 kHz using the 137 metre high radio mast as aerial. This was made possible after this frequency, which had been used from 1978 until the Mid of the ninties for transmissions of SFB and NDR on 630 kHz from the transmitter Dannenberg at daytimes, had been recoordinated for 24 hour transmission from the transmitter Cremlingen.
List of masts
