Mammut radar

Mammut

Mammut radar antenna
Country of origin	Germany
Introduced	1944?
Type	Phased array, long-range Early warning radar
Frequency	120–150 MHz
Range	300 km (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 Freya 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 8,000 m (26,000 ft) at a range of 300 km (190 mi).

The British intelligence code name, "hoarding", was 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 specifications

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

-/-	FuMG-416
Frequency range	116–146 MHz
Pulse power	20 kW
Pulse width	2–3.5 μs
Swivel angle	—
Beam width	0.5°
Resolution	300 m
Power supply	Mains and emergency generator
Antenna size	30 × 16 m (air force), 20 × 14 m (navy)
Weight	unknown
Tubes	similar to Freya
Range	325 km (202 mi)

References

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