Military Wiki
Mammut radar antanna
Country of origin Germany
Introduced 1944?
Type Phased array, long-range Early warning radar
Frequency 120–150 MH
Range 300 kilometres (190 mi)
Azimuth 2× 100°
Precision ±0.5°
Power 200 kW
Other Names FuMG 41/42

The FuMG 41/42 Mammut was a long-range, phased array, early warning radar built by Germany in the latter days of World War II. Developed by the GEMA company, it consisted of six or eight Frey antenna arrays, switched together and coupled to two Freya devices. The arrays were fixed and the beam could be electronically steered on a 100° arc in front and behind the antenna, leaving 80° blind arcs on each side. It was the world's first phased array radar and was able to detect targets flying at an altitude of 8,000m at a range of 300 km.

Concrete emplacement built at Cap Fagnet, Fécamp, Normandy, where the Mammut was never erected

The British intelligence codename, "hoarding", probably related to the shape of the large array. As late in the war as April 20, 1945, intelligence reports reflected the erroneous opinion that only development prototypes existed but no operational stations had been fielded.

Technical sspecifications

-/- FuMG-416
Frequency range 116–146 MHz
Pulse power 20 kW
Pulse width 2–3.5 μs
Swivel angle ???
Beam width 0.5°
Resolution 300m
Power supply Mains and emergency generator
Antenna size 30×16m (air force), 20×14m (navy)
Weight unknown
Tubes similar to Freya
Range 325 km


  • Swords, Sean S. (1986). Technical History of the Beginnings of Radar. London: IEE/Peter Peregrinus. ISBN 0-86341-043-X. 

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