 Dunay-3 (NATO: Dog House) radar receiver taken by US KH-7 spy satellite in 1967 | |
| Country of origin | Soviet Union |
|---|---|
| Introduced | 1959 (Dunay-2) 1968 (Dunay-3) 1978 (Dunay-3M, Dunay-3U) |
| No. built | 3 |
| Type | early warning radar |
| Frequency | UHF[1] |
| Range | 1,200 km (Dunay-2) 2,500 km (Dunay-3M) |
| Power | 100 kW (Dunay-2) 3 MW per sector (Dunay-3M) |
| Other Names | NATO: Dog House, Cat House, Top Roost, Hen Roost |
Dunay radar (Russian: Дунай, romanized: Dunay literally Danube; NATO: Cat House, Dog House) was a system of two Soviet radars used to detect American ballistic missiles fired at Moscow. They were part of the A-35 anti-ballistic missile system.[2] One sector of one of the radars, the Dunay-3U ("Cat House") is still operational and is run by the Russian Space Forces as part of the Main Control Centre of Outer Space.[3]