Oborona
The cover name Oborona ( NATO code : Tall King C ) was used to designate a Soviet radar device for air defense. The designation according to Russian nomenclature is 5N84A . It is a fairly long-wave radar, which was nevertheless equipped with a parabolic antenna , which therefore assumed gigantic dimensions with a width of 33 meters and a height of 22 meters.
With a range of 1200 km, this station was able to locate aircraft over Great Britain from a location in Central Germany (Thuringia). However, the use of meter waves (frequency: 150 to 170 MHz) limited the angular resolution (about 10 °). This was of little importance, however, since the radar was used as an early warning device and ensured the advance warning time for radar devices with a shorter range, but with greater accuracy and resolution.
As a 2D radar , this station mostly worked with a PRW-17 altitude finder , which provided the third coordinate of the three-dimensional data for the air situation.
The Oborona is the successor to the P-14 . A striking feature to differentiate the two antennas is the circular horizontal reflector at the top of the antenna mast, which is missing on the P-14.
Locations
- Gleina (near Altenburg )
- Putgarten (on the island of Rügen )
- Prangendorf near Sanitz (today Gubkow Peace Mission)
| Technical data Oborona | |
|---|---|
| Frequency range | 150-170 MHz |
| Pulse repetition time | approx. 6 ms |
| Pulse repetition frequency | approx. 180 Hz |
| Transmission time (PW) | 6 µs |
| Reception time | approx. 5 ms |
| Dead time | ... |
| Pulse power | |
| Average performance | ... |
| displayed distance | 1200 km |
| Distance resolution | 1000 m |
| Opening angle | ... |
| Hit count | > 15 |
| Antenna round trip time | 10 or 20 s |