ACARS Messaging
Decode ACARS (Aircraft Communications Addressing and Reporting System) messages on VHF frequencies (~129-131 MHz). Captures flight data, weather reports, position updates, and operational messages from aircraft.
Region & Frequencies
Status
Antenna Guide
VHF Airband (~130 MHz) — stock SDR antenna may work at close range
Simple Dipole
- Element length: ~57 cm each (quarter-wave at 130 MHz)
- Material: Wire, coat hanger, or copper rod
- Orientation: Vertical (airband is vertically polarized)
- Placement: Outdoors, as high as possible with clear sky view
Quick Reference
| Primary (N. America) |
131.550 / 130.025 MHz |
| Quarter-wave length |
57 cm |
| Modulation |
AM MSK 2400 baud |
| Polarization |
Vertical |
Message Feed
Start ACARS to see live messages