Navigation & Radio at Abraham Lincoln Capital Airport
US
SPI
/
KSPI
Radio Frequencies
13
Navigation Aids
6
Radio Frequencies
A/D
118.600 MHz
SPRINGFIELD APP/DEP
ID: 64858
Ref: 3897
A/D
118.600 MHz
SPRINGFIELD APP/DEP
ID: 64858
Ref: 3897
ATIS
127.650 MHz
ATIS
ID: 64859
Ref: 3897
ATIS
127.650 MHz
ATIS
ID: 64859
Ref: 3897
CLD
121.700 MHz
CLNC DEL
ID: 64860
Ref: 3897
CLD
121.700 MHz
CLNC DEL
ID: 64860
Ref: 3897
CTAF
121.300 MHz
CTAF
ID: 64861
Ref: 3897
GND
121.900 MHz
GND
ID: 64862
Ref: 3897
OPS
27.217 MHz
ANG OPS
ID: 64863
Ref: 3897
RDO
122.250 MHz
ST LOUIS RDO
ID: 64864
Ref: 3897
TWR
121.300 MHz
SPRINGFIELD TWR
ID: 64865
Ref: 3897
UNIC
131.420 MHz
UNICOM
ID: 64866
Ref: 3897
UNIC
131.420 MHz
UNICOM
ID: 64866
Ref: 3897
Navigation Aids
LQ
NDB
0.375 MHz
Licol
Location
Latitude:
39.911999°
Longitude:
-89.603104°
Elevation:
579 ft
Additional Info
Usage:
TERMINAL
Power:
LOW
Mag Var:
-1.051°
ID: 90507
LQ
NDB
0.375 MHz
Licol
Location
Latitude:
39.911999°
Longitude:
-89.603104°
Elevation:
579 ft
Additional Info
Usage:
TERMINAL
Power:
LOW
Mag Var:
-1.051°
ID: 90507
SP
NDB
0.382 MHz
Huskk
Location
Latitude:
39.773102°
Longitude:
-89.759903°
Elevation:
N/A ft
Additional Info
Usage:
TERMINAL
Power:
LOW
Mag Var:
-0.561°
ID: 93869
SP
NDB
0.382 MHz
Huskk
Location
Latitude:
39.773102°
Longitude:
-89.759903°
Elevation:
N/A ft
Additional Info
Usage:
TERMINAL
Power:
LOW
Mag Var:
-0.561°
ID: 93869
SPI
VORTAC
112.700 MHz
Spinner
Location
Latitude:
39.839699°
Longitude:
-89.677696°
Elevation:
587 ft
Additional Info
Usage:
BOTH
Power:
HIGH
Mag Var:
-1.026°
DME Information
Channel:
074X
Frequency:
112.700 MHz
ID: 93882
SPI
VORTAC
112.700 MHz
Spinner
Location
Latitude:
39.839699°
Longitude:
-89.677696°
Elevation:
587 ft
Additional Info
Usage:
BOTH
Power:
HIGH
Mag Var:
-1.026°
DME Information
Channel:
074X
Frequency:
112.700 MHz
ID: 93882
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