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Bertem Belgacontrol / Skeyes http://www.skeyes.be/en/ ATC radars; this is the primary one
The secondary one is located naearby at grid 50°52'14"N 4°37'0"E
The radar station consists of a main tower and a back-up tower situated appx 500 meters from each other and covers an area with a radius of 260 km (Paris-Dover-Leeuwarden-Frankfurt) up to a height of 60,000 feet (almost 20 km).

Photos
http://static.panoramio.com/photos/original/3762958.jpg
http://static.panoramio.com/photos/original/3762937.jpg

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