Navigation & Radio at Cyril E. King Airport
VI
STT
/
TIST
Radio Frequencies
17
Navigation Aids
2
Radio Frequencies
A/D
128.650 MHz
SAN JUAN CNTR
ID: 71770
Ref: 6369
A/D
128.650 MHz
SAN JUAN CNTR
ID: 71770
Ref: 6369
APP
118.800 MHz
ST THOMAS APP
ID: 71771
Ref: 6369
APP
118.800 MHz
ST THOMAS APP
ID: 71771
Ref: 6369
ATIS
124.000 MHz
ATIS
ID: 71772
Ref: 6369
ATIS
124.000 MHz
ATIS
ID: 71772
Ref: 6369
CTAF
118.800 MHz
CTAF
ID: 71773
Ref: 6369
CTAF
118.800 MHz
CTAF
ID: 71773
Ref: 6369
DEP
118.800 MHz
ST THOMAS DEP
ID: 71774
Ref: 6369
DEP
118.800 MHz
ST THOMAS DEP
ID: 71774
Ref: 6369
GND
121.900 MHz
GND
ID: 71775
Ref: 6369
GND
121.900 MHz
GND
ID: 71775
Ref: 6369
RDO
108.600 MHz
SAN JUAN RDO
ID: 71776
Ref: 6369
RDO
108.600 MHz
SAN JUAN RDO
ID: 71776
Ref: 6369
TWR
118.100 MHz
ST THOMAS TWR
ID: 71777
Ref: 6369
TWR
118.100 MHz
ST THOMAS TWR
ID: 71777
Ref: 6369
UNIC
122.950 MHz
UNICOM
ID: 71778
Ref: 6369
Navigation Aids
STT
VOR-DME
108.600 MHz
St Thomas
Location
Latitude:
18.355801°
Longitude:
-65.024597°
Elevation:
679 ft
Additional Info
Usage:
BOTH
Power:
HIGH
Mag Var:
-13.057°
DME Information
Channel:
023X
Frequency:
108.600 MHz
ID: 94013
STT
VOR-DME
108.600 MHz
St Thomas
Location
Latitude:
18.355801°
Longitude:
-65.024597°
Elevation:
679 ft
Additional Info
Usage:
BOTH
Power:
HIGH
Mag Var:
-13.057°
DME Information
Channel:
023X
Frequency:
108.600 MHz
ID: 94013
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