Navigation & Radio at Walla Walla Regional Airport
US
ALW
/
KALW
Radio Frequencies
10
Navigation Aids
4
Radio Frequencies
A/D
133.150 MHz
CHINOOK APP/DEP
ID: 61183
Ref: 3376
ASOS
135.875 MHz
ASOS
ID: 61184
Ref: 3376
ASOS
135.875 MHz
ASOS
ID: 61184
Ref: 3376
CTAF
118.500 MHz
CTAF
ID: 61185
Ref: 3376
GND
121.600 MHz
GND
ID: 61186
Ref: 3376
GND
121.600 MHz
GND
ID: 61186
Ref: 3376
RDO
122.300 MHz
SEATTLE RDO
ID: 61187
Ref: 3376
RDO
122.300 MHz
SEATTLE RDO
ID: 61187
Ref: 3376
TWR
118.500 MHz
TWR
ID: 61188
Ref: 3376
TWR
118.500 MHz
TWR
ID: 61188
Ref: 3376
Navigation Aids
AL
NDB
0.353 MHz
Trina
Location
Latitude:
46.175499°
Longitude:
-118.195999°
Elevation:
N/A ft
Additional Info
Usage:
TERMINAL
Power:
MEDIUM
Mag Var:
16.139°
ID: 85390
AL
NDB
0.353 MHz
Trina
Location
Latitude:
46.175499°
Longitude:
-118.195999°
Elevation:
N/A ft
Additional Info
Usage:
TERMINAL
Power:
MEDIUM
Mag Var:
16.139°
ID: 85390
ALW
VOR-DME
116.400 MHz
Walla Walla
Location
Latitude:
46.087002°
Longitude:
-118.292999°
Elevation:
1150 ft
Additional Info
Usage:
LO
Power:
MEDIUM
Mag Var:
16.139°
DME Information
Channel:
111X
Frequency:
116.400 MHz
ID: 85427
ALW
VOR-DME
116.400 MHz
Walla Walla
Location
Latitude:
46.087002°
Longitude:
-118.292999°
Elevation:
1150 ft
Additional Info
Usage:
LO
Power:
MEDIUM
Mag Var:
16.139°
DME Information
Channel:
111X
Frequency:
116.400 MHz
ID: 85427
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