Navigation & Radio at Dane County Regional Truax Field
US
MSN
/
KMSN
Radio Frequencies
20
Navigation Aids
4
Radio Frequencies
APP
120.100 MHz
MADISON APP
ID: 60005
Ref: 3707
APP
120.100 MHz
MADISON APP
ID: 60005
Ref: 3707
ATIS
124.650 MHz
ATIS
ID: 60006
Ref: 3707
ATIS
124.650 MHz
ATIS
ID: 60006
Ref: 3707
CLD
121.620 MHz
MADISON CLNC DEL
ID: 60007
Ref: 3707
CLD
121.620 MHz
MADISON CLNC DEL
ID: 60007
Ref: 3707
CTAF
119.300 MHz
CTAF
ID: 60008
Ref: 3707
CTAF
119.300 MHz
CTAF
ID: 60008
Ref: 3707
DEP
126.850 MHz
MADISON DEP
ID: 60009
Ref: 3707
DEP
126.850 MHz
MADISON DEP
ID: 60009
Ref: 3707
GND
121.900 MHz
MADISON GND
ID: 60010
Ref: 3707
GND
121.900 MHz
MADISON GND
ID: 60010
Ref: 3707
MISC
40.800 MHz
ARNG OPS
ID: 60011
Ref: 3707
MISC
40.800 MHz
ARNG OPS
ID: 60011
Ref: 3707
OPS
138.250 MHz
ANG OPS
ID: 60012
Ref: 3707
RDO
122.600 MHz
GREEN BAY RDO
ID: 60013
Ref: 3707
OPS
138.250 MHz
ANG OPS
ID: 60012
Ref: 3707
TWR
119.300 MHz
MADISON TWR
ID: 60014
Ref: 3707
UNIC
122.950 MHz
UNICOM
ID: 60015
Ref: 3707
UNIC
122.950 MHz
UNICOM
ID: 60015
Ref: 3707
Navigation Aids
MS
NDB
0.400 MHz
Monah
Location
Latitude:
43.062698°
Longitude:
-89.345901°
Elevation:
N/A ft
Additional Info
Usage:
TERMINAL
Power:
LOW
Mag Var:
-1.522°
ID: 91269
MS
NDB
0.400 MHz
Monah
Location
Latitude:
43.062698°
Longitude:
-89.345901°
Elevation:
N/A ft
Additional Info
Usage:
TERMINAL
Power:
LOW
Mag Var:
-1.522°
ID: 91269
MSN
VORTAC
108.600 MHz
Madison
Location
Latitude:
43.144798°
Longitude:
-89.339699°
Elevation:
860 ft
Additional Info
Usage:
LO
Power:
MEDIUM
Mag Var:
-1.535°
DME Information
Channel:
023X
Frequency:
108.600 MHz
ID: 91285
MSN
VORTAC
108.600 MHz
Madison
Location
Latitude:
43.144798°
Longitude:
-89.339699°
Elevation:
860 ft
Additional Info
Usage:
LO
Power:
MEDIUM
Mag Var:
-1.535°
DME Information
Channel:
023X
Frequency:
108.600 MHz
ID: 91285
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