Navigation & Radio at Ellington Airport
US
EFD
/
KEFD
Radio Frequencies
10
Navigation Aids
0
Radio Frequencies
A/D
134.450 MHz
HOUSTON APP DEP
ID: 63182
Ref: 19731
ATIS
135.575 MHz
ATIS
ID: 63183
Ref: 19731
GND
121.600 MHz
GND
ID: 63184
Ref: 19731
MISC
38.180 MHz
HOUSTON AIR
ID: 63185
Ref: 19731
OPS
41.000 MHz
ARNG OPS
ID: 63186
Ref: 19731
OPS
142.200 MHz
ANG OPS
ID: 63187
Ref: 19731
POST
142.200 MHz
COMD POST
ID: 63188
Ref: 19731
TWR
126.050 MHz
TWR
ID: 63189
Ref: 19731
UNIC
122.950 MHz
UNICOM
ID: 63190
Ref: 19731
UNIC
122.950 MHz
UNICOM
ID: 63190
Ref: 19731
Navigation Aids
No navigation aids available for this airport.
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