Here are a couple of links for those who are new to APRS.
- APRS: Automatic Packet Reporting Systemhttp://www.aprs.org/
- aprs.fi – live APRS map
- Automatic Packet Reporting System – Wikipedia
- APRS Mode (arrl.org)
- Introduction to APRS. Automatic Packet Reporting System is a… | by Angelo N2RAC/DU2XXR | N2RAC | DU2XXR Amateur Radio and Communications
Google “APRS” and get way more information than you ever wanted.