Navigation & Radio at Bozeman Yellowstone International Airport
US
BZN
/
KBZN
Radio Frequencies
14
Navigation Aids
4
Radio Frequencies
ATIS
135.425 MHz
ATIS
ID: 70436
Ref: 3437
ATIS
135.425 MHz
ATIS
ID: 70436
Ref: 3437
CNTR
132.400 MHz
SALT LAKE CITY CNTR
ID: 70437
Ref: 3437
CNTR
132.400 MHz
SALT LAKE CITY CNTR
ID: 70437
Ref: 3437
CTAF
118.200 MHz
CTAF
ID: 70438
Ref: 3437
CTAF
118.200 MHz
CTAF
ID: 70438
Ref: 3437
GND
121.800 MHz
GND
ID: 70439
Ref: 3437
GND
121.800 MHz
GND
ID: 70439
Ref: 3437
RDO
122.500 MHz
GREAT FALLS RDO
ID: 70440
Ref: 3437
RDO
122.500 MHz
GREAT FALLS RDO
ID: 70440
Ref: 3437
TWR
118.200 MHz
BOZEMAN TWR
ID: 70441
Ref: 3437
TWR
118.200 MHz
BOZEMAN TWR
ID: 70441
Ref: 3437
UNIC
122.950 MHz
UNICOM
ID: 70442
Ref: 3437
UNIC
122.950 MHz
UNICOM
ID: 70442
Ref: 3437
Navigation Aids
BZ
NDB
0.266 MHz
Manni
Location
Latitude:
45.871799°
Longitude:
-111.286003°
Elevation:
N/A ft
Additional Info
Usage:
TERMINAL
Power:
LOW
Mag Var:
13.391°
ID: 86515
BZ
NDB
0.266 MHz
Manni
Location
Latitude:
45.871799°
Longitude:
-111.286003°
Elevation:
N/A ft
Additional Info
Usage:
TERMINAL
Power:
LOW
Mag Var:
13.391°
ID: 86515
BZN
VOR-DME
112.400 MHz
Bozeman
Location
Latitude:
45.783901°
Longitude:
-111.154999°
Elevation:
4430 ft
Additional Info
Usage:
LO
Power:
HIGH
Mag Var:
13.342°
DME Information
Channel:
071X
Frequency:
112.400 MHz
ID: 86525
BZN
VOR-DME
112.400 MHz
Bozeman
Location
Latitude:
45.783901°
Longitude:
-111.154999°
Elevation:
4430 ft
Additional Info
Usage:
LO
Power:
HIGH
Mag Var:
13.342°
DME Information
Channel:
071X
Frequency:
112.400 MHz
ID: 86525
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