SOV - PRMG-5 (soubor přistávacích radiomajáků)

UAZ 452AE

This is a vehicle UAZ-452 AE with a special built-in component & # 367; course beacon system KRM-5 ..

PS - thanks for the fix

This vehicle in the picture - with the antenna dipole cover on the side, is a course beacon - KRM-5.


It is the distinguishing mark of both vehicles.


There is a complete instrumentation inside the vehicles (1x backup) and in case of parameter deviation or failure during operation of the transmitter, it will automatically switch to backup.


Each vehicle also has a GAZ-704 trailer with a pair of AB-2-T/230M1 generators.


Source: MNO "Systems and means of RTZ" - aid * Flight-51-70 - II. 1982 edition

A few photos from your own archive:

Landing Radio Beacons PRMG-5


This type of radio beacons is designed to guide aircraft equipped with RSBN on-board equipment to land in Category I weather conditions.
The PRMG-5 system produces equi-signal zones that determine the exact position of the aircraft in the heading and descent planes. The position of the aircraft in these planes is indicated by the on-board NPP indicator ('cross instrument').


***
By way of introduction "a little history":
The 1st Soviet system of precision landing radio beacons, which also began to be used in our Air Force to provide instrument landing of Il-28 and Il-14 aircraft, was at Prerov and Mladá (1955) were planted the type PRMG-2, working in the band 100 to 300 MHz and in Mosnov (1960) the whole set - the so-called MATERIK with the radio rangefinder RD-2.
It consisted of:
- course radio beacon (KRM-2) = Localizer (LLZ),
- Descending radio beacon (GRM-2) = Glide Path-beacon (GP),
- two signal beacons (Marker)
and is usually supplemented by a radio range finder repeater (RD-2) = Distance Measuring Equipment (DME).


Since 1974, a more modern type PRMG-4 KM was used.


From 1981, the PRMG-5 type was introduced and most military airfields were equipped with it.


Apart from some design changes (e.g. the use of semiconductors, there are 2 equivalent sets in each of the beacons for 100% backup, mobile fitment to small vans UAZ-452AE.
***


The PRMG-5 system consisted of:
2 cars UAZ-452AE with trailers GAZ-704:


1. Automobile UAZ-452AE - KRM and RD:
1.a) 2 sets of KRM-5
(course radio beacon / /Курсовой Радио Маяк = Localizer) with antenna system (10 elements on the side of the car)
- operating at a frequency of 905.1 - 932.4 MHz;
- transmitter power 8 W
- range 45 km
- located 500 - 1200 m behind the end of the VPD in its extended axis


1.b) rangefinder repeater RD
(Ретранслятор Дальномера = Distance Measuring Equipment) with antenna system (4 elements )
- operated at a frequency of 939.6 - 966.9 MHz
- the distance interrogation channel at 772 MHz
- the distance reply channel 966.9 MHz.
- transmitter power 400 W
- range 50 km
- co-located with KRM

1.c) trailer GAZ-704with a pair of power units AB-2-T/230M1


2. Automobile UAZ-452AE - GRM:


2.a) 2 sets of GRM-5
(descending radio beacon/ ( Глисадный Радио Маяк = Glide Path beacon) with antenna system (so called. "O" - zone on the mast )
- worked on the frequency 939,6 - 966,9 MHz
- transmitter power 8 W
- range 18 km
- located 200-500 m from the VPD threshold and 150 m (left/right) from the VPD axis


2.b) trailer GAZ-704 with a pair of AB-2-T/230M1 power units.


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It was a reliable system, but its operating frequencies interfered with the so-called TV band. Furthermore, the PRMG was not compatible with the ILS. Therefore, its use in the Czechoslovak Air Force/AČR was abandoned.



Source.