USA - SCS-51 (přístrojový přistávací systém)

American landing system Signal Corps System 51 (SCS-51) accounted for:

1) kursový beacon-transmitter (Localizer – LOC, the frequency of the 108-112 MHz),
1.a) AN/MRN-1 (in the car -53)
or
1.b) AN/CRN-10 (on the trailer V-6)

2) sestupový beacon-transmitter (Glide Path – GP, the frequency of the 328-336 MHz)
2.a) AN/CRN-2

3) positional signals (Marker – MKR, frequency 75 MHz)
3.a) AN/MRN-3


This system was the us army installed on the Prague-Ruzyně airport VPD 22 for the needs of the allies in the closing days of the war. Served to secure the landing of heavy transport aircraft (including the "Liberátorů" our 311. sq. m.)with repatrianty and transport the material to our overseas units from the West.

(In 1949 to ICAO recommended as an international standardized landing system ILS (Instrument Landing System).

In the early fifties, the system was for political reasons from Ruzyne removed...


Source: http://www.rlp.cz.

Exchange rate vor - Localizer AN/MRN-1
in the mobile version is mounted in the car GMC CCKW 353 K-53 (6x6).

the Main parts of the kit:

BC-915 Control panel
BC-751 transmitter radiomajáku
BC-752 Modulator
BC-753 fixed meter course (compass)
BC-754 portable meter course (compass)
BC-755 meter the intensity of the radio field
BC-777 warning indikator (alarm)
RC-109 antenna (5 turn loops with platform)
SCR-610 radio station (BC-659: 27-38,9 MHz)

PE-141 generator (115 V)


Source: http://en.wikipedia.org/wiki/AN/MRN-1.

Sestupový vor - Glide Path AN/CRN-2

In the mobile version is mounted to the box-type trailer In a-1 ( or on the chassis of the C-1/CRN-2).
The total mass of 900 kg (1800 lb)

Ingredients:
1. Chassis C-1/CRN-2 (the weight of 516 kg / (1032 lb)

2. The transmitter T-3/CRN-2 (weight of 113.5 kg (227 lb)

3. Antení system AS-2/CRN-2
3.a) a collapsible tubular mast
3.b) Warning lights (kerosene!)

4. The power block PP-29 ARN-2 (weight of 127 kg / (254 lb)

5. Generator PU-1/CRN-2 (weight 113 kg (226 lb)

6. 2x Battery BA-57 (weight 41 kg (82 lb)
7. Rotary changer PE-120 (weight 12.5 kg (25 lb)
8. 2x Vibration changer VB-12
9. 2x Vibration changer VB-13

10. Communication radio BC-659 /SCR-610 (weight 12.5 kg (25 lb)
10.a) Whip antenna AN-29
11. Headphones with microphone TS-13

12) a Crate on the accessories and ND (weight of 38.5 kg / (77 lb)

Sources: www.scribd.com
http://en.wikipedia.org/wiki/AN/CRN-2.

Mobile positioning radio beacon - a Marker AN/MRN-3
was mounted in car Jeep-Willys MB

It consisted of:
- transmitter radiomajáku RC-115 (BC-902-B; 75 MHz)with the antenna (in the dipole)
- MěničPE-88 (or) PE-214
- Radio station
BC-659 / SCR-610

Sources: www.scribd.com
http://en.wikipedia.org/wiki/AN/MRN-3.

Limit/signal beacons=Markers serve to indicate the place/point - in navigating aircraft, especially in systems approach to land in adverse conditions.

(In some systems they can also be placed together with the nesměrovým radio beacon - Non-Directional-Beacon, NDB)

The basic element is the vertically directed broadcast radio signal at the frequency of 75 MHz (4 m) - roughly in the shape of a cone with the fact that it is "zploštěň".
The antenna consists of a in the dipole with a reflector or vertically directed antenna Yagi.

In the system of ILS are normally 3, located in the arrivals zone in the axis of the VPD and before its threshold distances:

- The outer marker = Outer Marker "O" Modulating frequency of 400 Hz - transmits 2 dashes/sec : 7200 m (6-11 km) from the threshold / (4-7 NM)
- The middle marker = Middle Marker "M" Modulating a frequency of 1 300 Hz - sends a 1 period and 1 comma/sec : 1000 m/(0.5-0.8 NM)
before the threshold
- Internal marker = Inner Marker "I" Modulating a frequency of 3 000 Hz - sends a 6 dots/sec : up to 100 m before the threshold

Source: http://en.wikipedia.org/wiki/Marker_beacon.