Langenberg transmission tower

The transmitter first went into service in 1927 with 60 kilowatts (kW) of power and a T-aerial hanging on two 100-metre freestanding steel-frame towers insulated against ground.

[1] In the early 1930s, communist underground groups tried to manipulate the line from the studio to the transmitter in order to broadcast their own propaganda.

Their attempts failed, but they did manage to attach a red star to the top of one of the towers, which was removed on the same day.

In 1934 the T-aerial was replaced by an aerial hanging from a 160-metre wood framework tower and the transmission power was increased to 100 kW.

After World War II, British forces built two triangular aerials mounted on 6 masts, each 50 metres high.

Because this frequency is used by other broadcasters, interference problems occurred at night-time in spite of the 800 kW transmitting power.

As compensation, station owner WDR was allotted a second medium wave frequency of 720 kHz for daytime transmission only.