Navigation & Radio at Baltimore/Washington International Thurgood Marshall Airport
US
BWI
/
KBWI
Radio Frequencies
15
Navigation Aids
4
Radio Frequencies
APP
119.000 MHz
POTOMAC APP
ID: 70770
Ref: 3435
APP
119.000 MHz
POTOMAC APP
ID: 70770
Ref: 3435
ATIS
115.100 MHz
ATIS
ID: 70771
Ref: 3435
ATIS
115.100 MHz
ATIS
ID: 70771
Ref: 3435
CLD
118.050 MHz
CLNC DEL
ID: 70772
Ref: 3435
CLD
118.050 MHz
CLNC DEL
ID: 70772
Ref: 3435
DEP
126.750 MHz
POTOMAC DEP
ID: 70773
Ref: 3435
GND
121.900 MHz
GND
ID: 70774
Ref: 3435
GND
121.900 MHz
GND
ID: 70774
Ref: 3435
RDO
122.200 MHz
LEESBURG RDO
ID: 70775
Ref: 3435
RDO
122.200 MHz
LEESBURG RDO
ID: 70775
Ref: 3435
TWR
119.400 MHz
TWR
ID: 70776
Ref: 3435
TWR
119.400 MHz
TWR
ID: 70776
Ref: 3435
UNIC
122.950 MHz
UNICOM
ID: 70777
Ref: 3435
UNIC
122.950 MHz
UNICOM
ID: 70777
Ref: 3435
Navigation Aids
BAL
VORTAC
115.100 MHz
Baltimore
Location
Latitude:
39.171101°
Longitude:
-76.661301°
Elevation:
140 ft
Additional Info
Usage:
BOTH
Power:
MEDIUM
Mag Var:
-11.010°
DME Information
Channel:
098X
Frequency:
115.100 MHz
ID: 85793
BAL
VORTAC
115.100 MHz
Baltimore
Location
Latitude:
39.171101°
Longitude:
-76.661301°
Elevation:
140 ft
Additional Info
Usage:
BOTH
Power:
MEDIUM
Mag Var:
-11.010°
DME Information
Channel:
098X
Frequency:
115.100 MHz
ID: 85793
FND
NDB
0.371 MHz
Ellicott
Location
Latitude:
39.287399°
Longitude:
-76.777000°
Elevation:
381 ft
Additional Info
Usage:
TERMINAL
Power:
LOW
Mag Var:
-10.584°
ID: 88080
FND
NDB
0.371 MHz
Ellicott
Location
Latitude:
39.287399°
Longitude:
-76.777000°
Elevation:
381 ft
Additional Info
Usage:
TERMINAL
Power:
LOW
Mag Var:
-10.584°
ID: 88080
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