Protocol
- Overview
  - ▱ APRS Packet Structure
- Addressing
  - ▱ APRS paths in practice
  - ▱ Digipeating
- Information field
- Position
- Data extensions
- Mic-E
- Objects & items
- Weather
- Telemetry
- Messaging
- Queries & capabilities
  - ▱ APRS Queries
- Status
- Networking
- Symbols
- Special formats
- Reference
Operations
- ▱ Mobile APRS Station
Applications
Hardware
- ▱ FoxTrak-M

APRS Knowledge & Resources

APRS (Automatic Packet Reporting System) is a system for sharing positions, messages and telemetry over amateur radio. This site covers the protocol, station configuration and equipment.

APRS radio links connecting a hiker, a city, vehicles, an aircraft and a satellite.