P-15
In 1952 (NII-244 of the Ministry of Armaments), the development of an RL station operating in the dm band to detect low-flying targets was started under the designation TROPA P-15.
The RLS prototype (chief designer - B.P.Lebedev) successfully passed the state tests on the polygon in 1955. Since 1955, when the station was included in the armament, it was used in the radio technical units of the PVOS, Air Force, Navy and PVO of ground troops.
Three modes are used in combat operations - amplitude, amplitude with "buildup" and coherent-pulse. The station has protection against active frequency disturbances by rapidly switching to one of four operating frequencies. There is also protection against passive disturbances - ground reflectors and dipole reflectors. The station has a Kremnij-2 type ground interrogator. The station is mounted on a ZIL - 157 chassis.
The station is capable of detecting a fighter-type target at a flight altitude of 500-3000m at a range of 60-140 km. The pulse power of the transmitter is 300 kW. The width of the radiation pattern in azimuth is 4.5'.
In 1959, tests of an upgraded version of the P-15M were carried out on the polygon. The automatic and semi-automatic target acquisition modes were added, the moving target selection system was modernized, and apparatus for communication with the VOZDUCH-1P system was added.
The Ulyanovsk Mechanical Plant carried out further modernization, and in 1962 state tests of the P-15N station were conducted. The apparatus was modified and additional functional blocks were introduced to improve the technical and operational characteristics - especially the efficiency of the moving target selection system.
In 1963, parametric high-frequency amplifiers were tested in the apparatus at the Donguz polygon (cooperation between the Ulyanovsk Mech. Plant and the N.E. Bauman Moscow Technical University). The distance of the findings by this modernization (increase of receiver sensitivity) increased by 14%. The phasing mode of the coherent oscillator using echo signals was introduced. Parametric amplifiers were unreliable and thermally unstable and required improvement.
A further upgrade of the P-15MN was tested on the polygon in 1970. To protect against anti-radar missiles, the apparatus was supplemented with a "MERCANIJA" block (perhaps Czech for MIHOTANÍ...), a redesigned ground interrogator, and a fundamentally redesigned moving target selection system.
In this period (1970s) the apparatus was redesigned on a new component base, the ground interrogator was used more modern in the Kremnij-2M system. The result of this modernization was a new station P-19 DUNAJ, 1RL134, which was accepted into the armament in 1974.
Note - please add, especially technical parameters and comments of those who served on this legend......
grammatically corrected by Hanyz 7.7.2009
In 1952 (NII-244 of the Ministry of Armaments), the development of an RL station operating in the dm band to detect low-flying targets was started under the designation TROPA P-15.
The RLS prototype (chief designer - B.P.Lebedev) successfully passed the state tests on the polygon in 1955. Since 1955, when the station was included in the armament, it was used in the radio technical units of the PVOS, Air Force, Navy and PVO of ground troops.
Three modes are used in combat operations - amplitude, amplitude with "buildup" and coherent-pulse. The station has protection against active frequency disturbances by rapidly switching to one of four operating frequencies. There is also protection against passive disturbances - ground reflectors and dipole reflectors. The station has a Kremnij-2 type ground interrogator. The station is mounted on a ZIL - 157 chassis.
The station is capable of detecting a fighter-type target at a flight altitude of 500-3000m at a range of 60-140 km. The pulse power of the transmitter is 300 kW. The width of the radiation pattern in azimuth is 4.5'.
In 1959, tests of an upgraded version of the P-15M were carried out on the polygon. The automatic and semi-automatic target acquisition modes were added, the moving target selection system was modernized, and apparatus for communication with the VOZDUCH-1P system was added.
The Ulyanovsk Mechanical Plant carried out further modernization, and in 1962 state tests of the P-15N station were conducted. The apparatus was modified and additional functional blocks were introduced to improve the technical and operational characteristics - especially the efficiency of the moving target selection system.
In 1963, parametric high-frequency amplifiers were tested in the apparatus at the Donguz polygon (cooperation between the Ulyanovsk Mech. Plant and the N.E. Bauman Moscow Technical University). The distance of the findings by this modernization (increase of receiver sensitivity) increased by 14%. The phasing mode of the coherent oscillator using echo signals was introduced. Parametric amplifiers were unreliable and thermally unstable and required improvement.
A further upgrade of the P-15MN was tested on the polygon in 1970. To protect against anti-radar missiles, the apparatus was supplemented with a "MERCANIJA" block (perhaps Czech for MIHOTANÍ...), a redesigned ground interrogator, and a fundamentally redesigned moving target selection system.
In this period (1970s) the apparatus was redesigned on a new component base, the ground interrogator was used more modern in the Kremnij-2M system. The result of this modernization was a new station P-19 DUNAJ, 1RL134, which was accepted into the armament in 1974.
Note - please add, especially technical parameters and comments of those who served on this legend......
grammatically corrected by Hanyz 7.7.2009