Cabina 66
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The Kabina 66 ( K-66 for short ) with the NATO code " Back Net " was a long- range air defense radar device used by the radio troops of the former NVA . It had the Russian name 5N87.
The Kabina 66 was coupled with several height finders (two to four devices PRW-13 or PRW-17 ). The frequency was processed with four pulses, of which only two were sent. The mount with the transmission booth had two antenna systems with a diametrical arrangement. Each antenna covered a different height range. Usually four different height areas were scanned by using two coupled and synchronized cabins, but separate operation was also possible. The power supply (approx. 300 kW with 400 Hz) took place with a power converter or with diesel generators. 19 slab rail wagons were required to move the radar device.
| Technical data Kabina 66 "Back Net" | |
|---|---|
| Frequency range | F band |
| Pulse repetition time | 4 ms |
| Pulse repetition frequency | 60-1430 Hz |
| Transmission time (PW) | 96/36 µs |
| Reception time | <3 ms |
| Dead time | approx. 50 µs |
| Pulse power | up to 1.5 MW |
| Average performance | up to 32 kW |
| displayed distance | 450 km |
| Distance resolution | 150 m |
| Opening angle | 1.1 ° to 1.7 ° |
| Hit count | 1-8 |
| Antenna round trip time | 12 s |