Navigation & Radio at Cape Girardeau Regional Airport
US
CGI
/
KCGI
Radio Frequencies
11
Navigation Aids
3
Radio Frequencies
ASOS
120.550 MHz
ASOS
ID: 67694
Ref: 3447
ASOS
120.550 MHz
ASOS
ID: 67694
Ref: 3447
CNTR
133.650 MHz
MEMPHIS CNTR
ID: 67695
Ref: 3447
CNTR
133.650 MHz
MEMPHIS CNTR
ID: 67695
Ref: 3447
CTAF
119.000 MHz
CTAF
ID: 67696
Ref: 3447
CTAF
119.000 MHz
CTAF
ID: 67696
Ref: 3447
GND
121.600 MHz
GND
ID: 67697
Ref: 3447
RDO
122.400 MHz
ST LOUIS RDO
ID: 67698
Ref: 3447
TWR
119.000 MHz
TWR
ID: 67699
Ref: 3447
UNIC
122.950 MHz
UNICOM
ID: 67700
Ref: 3447
UNIC
122.950 MHz
UNICOM
ID: 67700
Ref: 3447
Navigation Aids
CG
NDB
0.248 MHz
Dutch
Location
Latitude:
37.253399°
Longitude:
-89.700600°
Elevation:
N/A ft
Additional Info
Usage:
TERMINAL
Power:
LOW
Mag Var:
-0.367°
ID: 86717
CGI
VOR-DME
112.900 MHz
Cape Girardeau
Location
Latitude:
37.227501°
Longitude:
-89.572403°
Elevation:
340 ft
Additional Info
Usage:
LO
Power:
MEDIUM
Mag Var:
-0.425°
DME Information
Channel:
076X
Frequency:
112.900 MHz
ID: 86722
CGI
VOR-DME
112.900 MHz
Cape Girardeau
Location
Latitude:
37.227501°
Longitude:
-89.572403°
Elevation:
340 ft
Additional Info
Usage:
LO
Power:
MEDIUM
Mag Var:
-0.425°
DME Information
Channel:
076X
Frequency:
112.900 MHz
ID: 86722
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