Navigation & Radio at Scholes International At Galveston Airport
US
GLS
/
KGLS
Radio Frequencies
16
Navigation Aids
6
Radio Frequencies
A/D
134.450 MHz
HOUSTON APP/DEP
ID: 63476
Ref: 3558
A/D
134.450 MHz
HOUSTON APP/DEP
ID: 63476
Ref: 3558
ASOS
119.275 MHz
ASOS
ID: 63477
Ref: 3558
ASOS
119.275 MHz
ASOS
ID: 63477
Ref: 3558
CLD
135.350 MHz
CLNC DEL
ID: 63478
Ref: 3558
CLD
135.350 MHz
CLNC DEL
ID: 63478
Ref: 3558
CTAF
120.575 MHz
CTAF
ID: 63479
Ref: 3558
CTAF
120.575 MHz
CTAF
ID: 63479
Ref: 3558
GND
118.625 MHz
GND
ID: 63480
Ref: 3558
GND
118.625 MHz
GND
ID: 63480
Ref: 3558
RDO
122.150 MHz
MONTGOMERY CO RDO
ID: 63481
Ref: 3558
RDO
122.150 MHz
MONTGOMERY CO RDO
ID: 63481
Ref: 3558
TWR
120.575 MHz
TWR
ID: 63482
Ref: 3558
TWR
120.575 MHz
TWR
ID: 63482
Ref: 3558
UNIC
123.050 MHz
UNICOM
ID: 63483
Ref: 3558
UNIC
123.050 MHz
UNICOM
ID: 63483
Ref: 3558
Navigation Aids
GLS
NDB
0.206 MHz
Galveston
Location
Latitude:
29.334000°
Longitude:
-94.756203°
Elevation:
N/A ft
Additional Info
Usage:
BOTH
Power:
HIGH
Mag Var:
3.328°
ID: 88458
GLS
NDB
0.206 MHz
Galveston
Location
Latitude:
29.334000°
Longitude:
-94.756203°
Elevation:
N/A ft
Additional Info
Usage:
BOTH
Power:
HIGH
Mag Var:
3.328°
ID: 88458
MHF
VOR-DME
113.600 MHz
Trinity
Location
Latitude:
29.546301°
Longitude:
-94.747498°
Elevation:
38 ft
Additional Info
Usage:
TERMINAL
Power:
MEDIUM
Mag Var:
3.319°
DME Information
Channel:
083X
Frequency:
113.600 MHz
ID: 90939
MHF
VOR-DME
113.600 MHz
Trinity
Location
Latitude:
29.546301°
Longitude:
-94.747498°
Elevation:
38 ft
Additional Info
Usage:
TERMINAL
Power:
MEDIUM
Mag Var:
3.319°
DME Information
Channel:
083X
Frequency:
113.600 MHz
ID: 90939
VUH
VORTAC
113.000 MHz
Scholes
Location
Latitude:
29.269300°
Longitude:
-94.867699°
Elevation:
4 ft
Additional Info
Usage:
BOTH
Power:
MEDIUM
Mag Var:
3.369°
DME Information
Channel:
077X
Frequency:
113.000 MHz
ID: 95321
VUH
VORTAC
113.000 MHz
Scholes
Location
Latitude:
29.269300°
Longitude:
-94.867699°
Elevation:
4 ft
Additional Info
Usage:
BOTH
Power:
MEDIUM
Mag Var:
3.369°
DME Information
Channel:
077X
Frequency:
113.000 MHz
ID: 95321
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