Atlantic Wall Regelbau L480 - Radar Bunker with Socket for Wassermann S Radar. Regelbau L480 with Wassermann FuMG 402 type radar. The Wassermann radar is a German radar from the Second World War. It is a long-range version of a Freya radar equipped with a large vertical antenna which could direct the beam very precisely up to 300 km. This radar, which emitted in a wavelength around 2.4 meters, entered into service in 1942 and around 150 were built. #AtlantikWall #Bunker #Regelbau