Navigation & Radio at Glasgow Valley County Airport Wokal Field
US
GGW
/
KGGW
Radio Frequencies
5
Navigation Aids
4
Radio Frequencies
ASOS
135.175 MHz
ASOS
ID: 70849
Ref: 3556
CNTR
126.850 MHz
SALT LAKE CITY CNTR
ID: 70850
Ref: 3556
RDO
122.250 MHz
GREAT FALLS RDO
ID: 70851
Ref: 3556
UNIC
122.800 MHz
CTAF/UNICOM
ID: 70852
Ref: 3556
UNIC
122.800 MHz
CTAF/UNICOM
ID: 70852
Ref: 3556
Navigation Aids
GGW
VOR-DME
113.900 MHz
Glasgow
Location
Latitude:
48.215302°
Longitude:
-106.625000°
Elevation:
2280 ft
Additional Info
Usage:
BOTH
Power:
HIGH
Mag Var:
11.363°
DME Information
Channel:
086X
Frequency:
113.900 MHz
ID: 88387
GGW
VOR-DME
113.900 MHz
Glasgow
Location
Latitude:
48.215302°
Longitude:
-106.625000°
Elevation:
2280 ft
Additional Info
Usage:
BOTH
Power:
HIGH
Mag Var:
11.363°
DME Information
Channel:
086X
Frequency:
113.900 MHz
ID: 88387
MKR
NDB
0.339 MHz
Milk River
Location
Latitude:
48.207901°
Longitude:
-106.625999°
Elevation:
2293 ft
Additional Info
Usage:
TERMINAL
Power:
MEDIUM
Mag Var:
11.363°
ID: 91030
MKR
NDB
0.339 MHz
Milk River
Location
Latitude:
48.207901°
Longitude:
-106.625999°
Elevation:
2293 ft
Additional Info
Usage:
TERMINAL
Power:
MEDIUM
Mag Var:
11.363°
ID: 91030
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