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Soviet PRV-17 "Odd Group" height finding radar. Medina, Hungary. Introduced in 1984 for detection of USA Pershing 2 IRBMs, since the USSR did not have a ballistic missile warning radar system in Central or Eastern Europe. Operated in the E-band, at a peak power of 2.5 mw, and a range of 250 nm (460 km)
Animation showing the radiation pattern of a phased array of 15 antenna elements spaced a quarter wavelength apart as the phase difference between adjacent antennas is swept between −120 and 120 degrees. The dark area is the beam or main lobe, while the light lines fanning out around it are sidelobes.
FuMG 41/42 Mammut radar. This coupled two Freya stations together, and used eight Freya antennae in one array to increase range. This was the first phased array radar: the array was fixed, but the beam could be steered electronically one degrees in front and back, leaving an eighty degree blind spot on the sides. Range was 300 km (186 miles), at a frequency of 120 to 130 MHz and peak power was 200 kw. First built in 1944 by GEMA, only a few stations were operational before the war ended.