Navigation & Radio at City of Colorado Springs Municipal Airport
US
COS
/
KCOS
Radio Frequencies
19
Navigation Aids
2
Radio Frequencies
APP
118.500 MHz
SPRINGS APP
ID: 69831
Ref: 3463
APP
118.500 MHz
SPRINGS APP
ID: 69831
Ref: 3463
ATIS
125.000 MHz
ATIS
ID: 69832
Ref: 3463
CLD
134.450 MHz
CLNC DEL
ID: 69833
Ref: 3463
CTAF
124.150 MHz
CTAF
ID: 69834
Ref: 3463
CTAF
124.150 MHz
CTAF
ID: 69834
Ref: 3463
DEP
124.000 MHz
SPRINGS DEP
ID: 69835
Ref: 3463
DEP
124.000 MHz
SPRINGS DEP
ID: 69835
Ref: 3463
GND
121.700 MHz
GND
ID: 69836
Ref: 3463
OPS
29.840 MHz
AFRC OPS
ID: 69837
Ref: 3463
GND
121.700 MHz
GND
ID: 69836
Ref: 3463
PMSV
34.920 MHz
PMSV PETERSON METRO
ID: 69838
Ref: 3463
PTD
122.850 MHz
PETERSON PTD
ID: 69839
Ref: 3463
PTD
122.850 MHz
PETERSON PTD
ID: 69839
Ref: 3463
RDO
122.250 MHz
DENVER RDO
ID: 69840
Ref: 3463
RDO
122.250 MHz
DENVER RDO
ID: 69840
Ref: 3463
TWR
119.900 MHz
SPRINGS TWR
ID: 69841
Ref: 3463
TWR
119.900 MHz
SPRINGS TWR
ID: 69841
Ref: 3463
UNIC
122.950 MHz
UNICOM
ID: 69842
Ref: 3463
Navigation Aids
CO
NDB
0.407 MHz
Petey
Location
Latitude:
38.694302°
Longitude:
-104.716003°
Elevation:
5570 ft
Additional Info
Usage:
LO
Power:
LOW
Mag Var:
9.214°
ID: 86933
CO
NDB
0.407 MHz
Petey
Location
Latitude:
38.694302°
Longitude:
-104.716003°
Elevation:
5570 ft
Additional Info
Usage:
LO
Power:
LOW
Mag Var:
9.214°
ID: 86933
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