Navigation & Radio at John Wayne Orange County International Airport
US
SNA
/
KSNA
Radio Frequencies
30
Navigation Aids
2
Radio Frequencies
APP
38.020 MHz
SOCAL APP
ID: 71209
Ref: 3894
APP
38.020 MHz
SOCAL APP
ID: 71209
Ref: 3894
APP
121.300 MHz
SOCAL APP
ID: 71208
Ref: 3894
APP
121.300 MHz
SOCAL APP
ID: 71208
Ref: 3894
ATIS
126.000 MHz
ATIS
ID: 71210
Ref: 3894
ATIS
126.000 MHz
ATIS
ID: 71210
Ref: 3894
CLD
118.000 MHz
CLNC DEL
ID: 71211
Ref: 3894
CLD
118.000 MHz
CLNC DEL
ID: 71211
Ref: 3894
CLD
121.850 MHz
CLNC DEL SECONDARY
ID: 509944
Ref: 3894
CLD
121.850 MHz
CLNC DEL SECONDARY
ID: 509944
Ref: 3894
CTAF
126.800 MHz
CTAF
ID: 71212
Ref: 3894
CTAF
126.800 MHz
CTAF
ID: 71212
Ref: 3894
DEP
128.100 MHz
SOCAL DEP
ID: 71213
Ref: 3894
DEP
128.100 MHz
SOCAL DEP
ID: 71213
Ref: 3894
DEP
132.700 MHz
SOCAL DEP
ID: 509948
Ref: 3894
DEP
132.700 MHz
SOCAL DEP
ID: 509948
Ref: 3894
GND
120.800 MHz
JOHN WAYNE GROUND
ID: 71214
Ref: 3894
GND
120.800 MHz
JOHN WAYNE GROUND
ID: 71214
Ref: 3894
GND
132.250 MHz
JOHN WAYNE GROUND SECONDARY
ID: 509945
Ref: 3894
GND
132.250 MHz
JOHN WAYNE GROUND SECONDARY
ID: 509945
Ref: 3894
RDO
122.450 MHz
RIVERSIDE RDO
ID: 71215
Ref: 3894
RDO
122.450 MHz
RIVERSIDE RDO
ID: 71215
Ref: 3894
TWR
119.900 MHz
RWY 02-20
ID: 71216
Ref: 3894
TWR
119.900 MHz
RWY 02-20
ID: 71216
Ref: 3894
TWR
126.800 MHz
02L-20R
ID: 509946
Ref: 3894
TWR
126.800 MHz
02L-20R
ID: 509946
Ref: 3894
TWR
128.350 MHz
JOHN WAYNE TOWER SECONDARY
ID: 509947
Ref: 3894
TWR
128.350 MHz
JOHN WAYNE TOWER SECONDARY
ID: 509947
Ref: 3894
UNIC
122.950 MHz
UNICOM
ID: 71217
Ref: 3894
UNIC
122.950 MHz
UNICOM
ID: 71217
Ref: 3894
Navigation Aids
NA
NDB
0.337 MHz
Maagg
Location
Latitude:
33.688801°
Longitude:
-117.860001°
Elevation:
53 ft
Additional Info
Usage:
TERMINAL
Power:
LOW
Mag Var:
12.578°
ID: 91455
NA
NDB
0.337 MHz
Maagg
Location
Latitude:
33.688801°
Longitude:
-117.860001°
Elevation:
53 ft
Additional Info
Usage:
TERMINAL
Power:
LOW
Mag Var:
12.578°
ID: 91455
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