Navigation & Radio at Saint Paul Downtown Holman Field
US
STP
/
KSTP
Radio Frequencies
14
Navigation Aids
4
Radio Frequencies
A/D
121.200 MHz
MINNEAPOLIS APP/DEP
ID: 69140
Ref: 3906
A/D
121.200 MHz
MINNEAPOLIS APP/DEP
ID: 69140
Ref: 3906
ATIS
118.350 MHz
ATIS
ID: 69141
Ref: 3906
ATIS
118.350 MHz
ATIS
ID: 69141
Ref: 3906
CTAF
119.100 MHz
CTAF
ID: 69142
Ref: 3906
CTAF
119.100 MHz
CTAF
ID: 69142
Ref: 3906
GCCD
121.675 MHz
GND/CLNC DEL
ID: 69143
Ref: 3906
GCCD
121.675 MHz
GND/CLNC DEL
ID: 69143
Ref: 3906
OPS
41.400 MHz
ARNG OPS
ID: 69144
Ref: 3906
OPS
41.400 MHz
ARNG OPS
ID: 69144
Ref: 3906
TWR
119.100 MHz
TWR
ID: 69145
Ref: 3906
TWR
119.100 MHz
TWR
ID: 69145
Ref: 3906
UNIC
122.950 MHz
UNICOM
ID: 69146
Ref: 3906
UNIC
122.950 MHz
UNICOM
ID: 69146
Ref: 3906
Navigation Aids
BA
NDB
0.385 MHz
Babco
Location
Latitude:
44.856701°
Longitude:
-92.984497°
Elevation:
N/A ft
Additional Info
Usage:
TERMINAL
Power:
LOW
Mag Var:
1.017°
ID: 85778
BA
NDB
0.385 MHz
Babco
Location
Latitude:
44.856701°
Longitude:
-92.984497°
Elevation:
N/A ft
Additional Info
Usage:
TERMINAL
Power:
LOW
Mag Var:
1.017°
ID: 85778
PPI
NDB
0.400 MHz
Hopey
Location
Latitude:
44.873100°
Longitude:
-92.942299°
Elevation:
N/A ft
Additional Info
Usage:
TERMINAL
Power:
LOW
Mag Var:
0.593°
ID: 92642
PPI
NDB
0.400 MHz
Hopey
Location
Latitude:
44.873100°
Longitude:
-92.942299°
Elevation:
N/A ft
Additional Info
Usage:
TERMINAL
Power:
LOW
Mag Var:
0.593°
ID: 92642
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