P-40 (Long Track)
The P-40 (Russian name "Bronja" , nickname "Eisenschwein" , NATO code name Long Track ) is a Russian mobile radar station on the base vehicle 426 U. The original Russian designator is 1S12 . Under the name P-40, the radar device was used to assign targets for units of the NVA air defense and has a range of about 378 kilometers.
Technology of the vehicle
The vehicle is a modified version of the AT-T artillery tug . A 12-cylinder 4-stroke diesel engine with an output of 342 kW (465 hp) is used as the drive motor, which gives the radar station a top speed of 55 km / h with a device weight of 35 tons. The device is powered by a built-in 100 kW, 400 Hz generator that is driven by a gas turbine. The power supply was designed redundantly. The crew consists of six men.
- Occupation of the NVA
- 1 station manager - officer / professional non-commissioned officer,
- 1 troop leader - temporary non-commissioned officer,
- 1 driver - non-commissioned officer on time,
- 3 radio locators - soldiers in basic military service
Radar device
The transmitter consists of four series-connected amplitrons as transmitter tubes, which are controlled by a traveling wave tube . Individual transmission tubes could be switched off and the transmission power partially reduced.
| Technical data P-40 & # 132; Long Track & # 148; | |
|---|---|
| Frequency range | 2.2-2.3 GHz |
| Pulse repetition time | 2.5 and 1.25 ms |
| Pulse repetition frequency | 400, 600 Hz and 800 Hz |
| Transmission time (PW) | 1 and 2 µs |
| Reception time | 2.49 and 1.24 ms |
| Dead time | |
| Pulse power | up to 1.75 MW |
| Average performance | 2-3 kW |
| displayed distance | up to 375 km |
| Distance resolution | 300 m |
| Opening angle | 1.5 ° |
| Hit count | > 8 |
| Antenna round trip time | 4 s or 5 s |
Web links
- Radar tutorial device file
- www.fas.org (English)