Navigation & Radio at Al Udeid Air Base
QA
XJD
/
OTBH
Radio Frequencies
12
Navigation Aids
2
Radio Frequencies
A/G
28.145 MHz
SOF
ID: 56377
Ref: 5309
ACC
121.100 MHz
DOHA APP
ID: 56378
Ref: 5309
ATIS
123.750 MHz
ATIS
ID: 56379
Ref: 5309
GND
135.500 MHz
GND
ID: 56380
Ref: 5309
INFO
126.450 MHz
DOHA INFO
ID: 56381
Ref: 5309
MISC
127.800 MHz
AMCC
ID: 56382
Ref: 5309
PMSV
39.000 MHz
METRO
ID: 56383
Ref: 5309
POST
32.212 MHz
COMD POST
ID: 56384
Ref: 5309
PTD
29.220 MHz
PTD
ID: 56385
Ref: 5309
PTD
29.220 MHz
PTD
ID: 56385
Ref: 5309
TWR
125.500 MHz
TWR
ID: 56386
Ref: 5309
TWR
125.500 MHz
TWR
ID: 56386
Ref: 5309
Navigation Aids
ALD
VORTAC
115.200 MHz
Al Udeid
Location
Latitude:
25.139500°
Longitude:
51.305099°
Elevation:
37 ft
Additional Info
Usage:
BOTH
Power:
LOW
Mag Var:
1.568°
DME Information
Channel:
099X
Frequency:
115.200 MHz
ID: 85400
ALD
VORTAC
115.200 MHz
Al Udeid
Location
Latitude:
25.139500°
Longitude:
51.305099°
Elevation:
37 ft
Additional Info
Usage:
BOTH
Power:
LOW
Mag Var:
1.568°
DME Information
Channel:
099X
Frequency:
115.200 MHz
ID: 85400
Understanding Airport Navigation & Radio Communications
Radio Frequencies in Aviation
Radio frequencies are essential for communication between aircraft, air traffic control, and ground services. Here are the common types:
Common Frequency Types
- ATIS (Automatic Terminal Information Service): Continuous broadcast of airport conditions
- Ground: Communication with ground control for taxi instructions
- Tower: Communication with air traffic control tower
- Approach/Departure: Handling arriving and departing aircraft
- UNICOM/CTAF: Used at airports without control towers
Frequency Ranges
- VHF Band: 118.000 - 136.975 MHz
- Emergency: 121.5 MHz (International emergency frequency)
- Ground Control: Usually 121.6 - 121.9 MHz
- ATIS: Usually 108 - 118 MHz
- UNICOM: Typically 122.8 MHz (uncontrolled airports)
Navigation Aids (Navaids)
Navigation aids are electronic systems that help pilots determine their position and navigate safely. Here are the main types:
Types of Navaids
- VOR (VHF Omnidirectional Range): Provides bearing information to aircraft
- DME (Distance Measuring Equipment): Gives slant-range distance to the station
- NDB (Non-Directional Beacon): Simple radio beacon for basic navigation
- TACAN (Tactical Air Navigation): Military version of VOR/DME
- VORTAC: Combined VOR and TACAN facility
Usage Types & Power Levels
- HI: High altitude navigation
- LO: Low altitude navigation
- TERM: Terminal area navigation
- Power Levels: HIGH, MEDIUM, LOW (affects range)
- RNAV: Area navigation capability
Important Notes
- Always verify frequencies and navaid status in current aviation publications
- Magnetic variation changes over time and should be considered when using navaids
- Some navaids may be out of service or have limited hours of operation
- DME distances are slant-range and may differ from actual ground distance