The Sender Brocken (transmitter Brocken) is a transmission facility for FM- and TV-transmitters on the mountain Brocken in Germany. Already between 1936 and 1937 the old TV tower on the Brocken was built. . This tower is 53 metres high (including with its antenna mast, which exists no more, it had a height of 95 metres) and has an observation deck, which can be reached by an elevator. This tower should be used after 1939 for TV transmissions in the middle of Germany, but, because World War II startet, it was not done any more. Instead of this it was transformed in a radar facility. The tower looks in opposite to a modern TV tower like a block of flats ith a cross section of a square. The arrangment of the windows of the observation deck remembers to the restaurant of Radio tower Berlin. At the time of GDR the transmitter Brocken was used for TV and FM-transmissions, although its site was in the restricted area of the frontier. In 1973 a new TV tower was built on Brocken. This 123 metre high freestanding steel tube tower stands on three legs, in which shafts for cable and stairways for access are. Upperward the legs there are three decks for aerials for directional radio. The new television tower is not accessible for the public. In the first half of the 90ies the transmitting aerial of the old TV tower was demounted and replaced by a radom, in which a radar of the DFS should be. The Sender Brocken is property of German Telecom Inc..
The Brocken, or Blocksberg, is the highest peak (1142 metres) in the Harz Mountains in Germany (located between the rivers Weser and Elbe) and also the highest peak of northern Germany.
Today the Brocken is part of a national park and hosts a historic botanical garden of mountain plants, founded in 1890.
From 1957 the Brocken constituted a security zone, and after construction of the Berlin Wall began on August 13, 1961, East German authorities designated it as a military high-grade security zone and turned it into a fortress.