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PRV-10 “Rock Cake”

Description of the radar set, tactical-technical characteristics
Model photo PRV-10

Figure 1: Model photo PRV-10
(Photo courtesy of the Military History Museum of the German Armed Forces Dresden).

frequency: E-band
pulse repetition time (PRT):
pulse repetition frequency (PRF):
pulsewidth (τ): 2.7 … 3.2 µs
receiving time:
dead time:
peak power: 1.8 … 2 MW
average power:
instrumented range: 300 km
range resolution: 3 km
beamwidth (azimuth): 3° … 5°
beamwidth (elevation):
hits per scan:

PRV-10 “Rock Cake”

PRV-10 “Konus” (russ. Designator: 1RL12; Cyrillic: 1РЛ12 «Конус»; NATO-Designator: “Rock Cake”; name is abbreviation of “podvizhnyy radiovysotomer”, Cyrillic: «Подвижный РадиоВысотомер», ПРВ). The PRV-10 was the first heightfinder of Soviet production, developed based on the altimeter of the radar prototype Topol-2 in a mobile version. It was intended in the capacity of a radio altimeter as an auxiliary device for various 2D air surveillance radars. The maximum measurable altitude was 34 000 m.

It entered service in the former Warsaw Pact countries in 1956 and was modernized to a possible sector operation in 1957. After modernization to the PRV-10M, the appearance of the antenna reflector changed somewhat. The PRV-10’s greatest weakness was its bad jamming resistance. It was probably in service until 1975 and was replaced by the PRV-11.

Picture gallery PRV-10

Figure 2: Yagi antennas of P-8 “Knife Rest A” (right mast) with the secondary radar Kremnij-1 (left mast) center: a PRV-10

Figure 3: PRW-10M in a museum in Sarja (near Moscow)