Navigation & Radio at Missoula International Airport
US
MSO
/
KMSO
Radio Frequencies
13
Navigation Aids
3
Radio Frequencies
A/D
124.900 MHz
SPOKANE APP/DEP
ID: 69954
Ref: 3708
A/D
124.900 MHz
SPOKANE APP/DEP
ID: 69954
Ref: 3708
ATIS
126.650 MHz
ATIS
ID: 69955
Ref: 3708
ATIS
126.650 MHz
ATIS
ID: 69955
Ref: 3708
CTAF
118.400 MHz
CTAF
ID: 69956
Ref: 3708
CTAF
118.400 MHz
CTAF
ID: 69956
Ref: 3708
GND
121.900 MHz
GND
ID: 69957
Ref: 3708
RDO
122.450 MHz
GREAT FALLS RDO
ID: 69958
Ref: 3708
RDO
122.450 MHz
GREAT FALLS RDO
ID: 69958
Ref: 3708
TWR
118.400 MHz
TWR
ID: 69959
Ref: 3708
TWR
118.400 MHz
TWR
ID: 69959
Ref: 3708
UNIC
122.950 MHz
UNICOM
ID: 69960
Ref: 3708
UNIC
122.950 MHz
UNICOM
ID: 69960
Ref: 3708
Navigation Aids
INE
NDB
0.521 MHz
Konna
Location
Latitude:
47.094398°
Longitude:
-114.397003°
Elevation:
3720 ft
Additional Info
Usage:
LO
Power:
MEDIUM
Mag Var:
15.144°
ID: 89268
INE
NDB
0.521 MHz
Konna
Location
Latitude:
47.094398°
Longitude:
-114.397003°
Elevation:
3720 ft
Additional Info
Usage:
LO
Power:
MEDIUM
Mag Var:
15.144°
ID: 89268
MSO
VOR-DME
112.800 MHz
Missoula
Location
Latitude:
46.908001°
Longitude:
-114.084000°
Elevation:
3203 ft
Additional Info
Usage:
LO
Power:
MEDIUM
Mag Var:
15.042°
DME Information
Channel:
075X
Frequency:
112.800 MHz
ID: 91288
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