SPOON REST radar
SPOON REST is the NATO reporting name for an elderly but still common Soviet-designed early warning and search radar, actually named P-12 by its developers. It is the long-range radar for the ubiquitous S-75 Dvina surface-to-air missile called the SA-2 GUIDELINE by NATO. The radar was widely exported with the SA-2, but also for many other applications.
The West fully understands SPOON REST after receiving an Israeli-captured system in 1969, but the system still has utility. While more modern radars use higher frequencies, VHF radars have gotten a new value because they are better at detecting stealth aircraft, especially first-generation stealth aircraft such as the F-117.
Its usual operating mode was to determine azimuth, although a goniometer could be switched on to give elevation angle, reducing the system range. Multiple SPOON REST radars can be synchronized into a multistatic sysetm to increase range.