Navigation & Radio at Alpena County Regional Airport
US
APN
/
KAPN
Radio Frequencies
16
Navigation Aids
3
Radio Frequencies
A/D
128.425 MHz
APP/DEP
ID: 65385
Ref: 3382
A/D
128.425 MHz
APP/DEP
ID: 65385
Ref: 3382
ASOS
120.675 MHz
ASOS
ID: 65386
Ref: 3382
ASOS
120.675 MHz
ASOS
ID: 65386
Ref: 3382
CTAF
121.350 MHz
CTAF
ID: 65387
Ref: 3382
CTAF
121.350 MHz
CTAF
ID: 65387
Ref: 3382
GND
121.900 MHz
GND
ID: 65388
Ref: 3382
GND
121.900 MHz
GND
ID: 65388
Ref: 3382
PTD
37.220 MHz
PTD
ID: 65389
Ref: 3382
PTD
37.220 MHz
PTD
ID: 65389
Ref: 3382
RDO
108.800 MHz
LANSING RDO
ID: 65390
Ref: 3382
RDO
108.800 MHz
LANSING RDO
ID: 65390
Ref: 3382
TWR
121.350 MHz
TWR
ID: 65391
Ref: 3382
TWR
121.350 MHz
TWR
ID: 65391
Ref: 3382
UNIC
122.950 MHz
UNICOM
ID: 65392
Ref: 3382
UNIC
122.950 MHz
UNICOM
ID: 65392
Ref: 3382
Navigation Aids
AP
NDB
0.206 MHz
Felps
Location
Latitude:
44.960701°
Longitude:
-83.559998°
Elevation:
750 ft
Additional Info
Usage:
TERMINAL
Power:
LOW
Mag Var:
-7.305°
ID: 85534
AP
NDB
0.206 MHz
Felps
Location
Latitude:
44.960701°
Longitude:
-83.559998°
Elevation:
750 ft
Additional Info
Usage:
TERMINAL
Power:
LOW
Mag Var:
-7.305°
ID: 85534
APN
VORTAC
108.800 MHz
Alpena
Location
Latitude:
45.082802°
Longitude:
-83.556999°
Elevation:
680 ft
Additional Info
Usage:
LO
Power:
MEDIUM
Mag Var:
-7.332°
DME Information
Channel:
025X
Frequency:
108.800 MHz
ID: 85542
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