![]() It has been largely superseded by its successor the P-19. ![]() Developed in the late 1950s, the Side Net operated at 2700 MHz, at a peak power of 2.5 mw, and had a max range of 420 km. It has since become obsolete, but it was passed down to successor states after the fall of the Soviet Union. PRV-11 height finding radar (NATO name: Side Net) of the S-125 Neva/Pechora system. The P-15 was operated by the Soviet Union from 1955. ![]() A secondary radar for IFF is generally used in conjunction with the P-15, generally the 1L22 "Parol". Azimuth was determined by mechanical scanning with an associated accompanying PRV-11 (NATO reporting name "Side Net") used to determine elevation. The radar can rapidly shift its frequency to one of four pre-set frequencies to avoid active interference, with passive interference being removed by a coherent doppler filter. The P-15 uses two open frame elliptical parabolic antenna accomplishing both transmission and reception, each antenna being fed by a single antenna feed. With the antenna mounted directly on the single truck (Zil-157) used for transport, the system could be deployed and taken down in no more than 10 minutes. The P-19 is known in the west as the Flat Face B. Finally by 1974, the modernisation of the P-15 was so extensive that it resulted in a new designation, the P-19 "Danube", also known as the 1RL134. The P-15MN included a pulse coherent Doppler filter ( moving target indicator) to remove passive clutter (by up to 50 dB), the first such radar in the Soviet Union. Further improvements were made in 1970 when the P-15MN passed trials. The P-15N introduced a more sensitive receiver, which improved the detection range and a new amplifier for the transmitter. In 1962, another modernisation of the P-15 passed through trials as the P-15N, the radar being developed and produced by the Ulyanovsk Mechanical Plant. In 1959, the modernised P-15M "trail" radar passed through the state test program, the modernisation replacing outdated mercury-based electronics. The P-15 was designed to detect aircraft flying at low altitude and came to be associated with the S-125 "Neva" anti-aircraft system (NATO reporting name SA-3 "Goa"), though it was later replaced by the P-15M2 "Squat Eye" radar which mounted a single radar antenna on a 20-30 meter mast to improve coverage. In 1952 SRI-244 started development of what become the P-15 early warning radar by 1955, the radar had passed state trials and was accepted into service with the anti-aircraft troops of the Soviet armed forces. Please consult your device documentation for instructions.The P-15 "Tropa" ( Russian: "Тропа" English: " trail") or 1RL13 (also referred to by the NATO reporting name "Flat Face A" in the west) is a 2D UHF radar developed and operated by the former Soviet Union. On mobile devices, you can save the bookmark as an easy-access icon similar to other apps. For example, if you select "Weather for a location," then select a location, the bookmark will return to your location on your next visit. ![]() You may bookmark the URL to return later to the same view with the selected settings. The URL will automatically update as you select the view and settings. This view is similar to a radar application on a phone that provides radar, current weather, alerts and the forecast for a location. This view combines radar station products into a single layer called a mosaic and storm based alerts. This view provides specific radar products for a selected radar station and storm based alerts. This site is organized into views that provide relevant radar products and weather information for a common task or goal. ![]()
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