APRS is Automatic Packet Reporting System.

It is related to, but distinct from, Packet Radio.

Lots more info on APRS here, but for now, just some specific notes.

BPQ (packet node software) supports APRS pretty well, it turns out.

See BPQ Nodes on APRS for some notes.

APRS supports telemetry, and aprs.fi makes it pretty, like this.

A very rough / raw example of how to get the Linux kernel implementation to send APRS telemetry:

beacon -s -c "M0LTE-2" -d "APRS" 2m ":M0LTE-2  :PARM.Rabbits,Rats,Voles"
beacon -s -c "M0LTE-2" -d "APRS" 2m ":M0LTE-2  :UNIT.count,V,C"
beacon -s -c "M0LTE-2" -d "APRS" 2m "T#000,1,3,5"
beacon -s -c "M0LTE-2" -d "APRS" 2m "T#001,2,4,5"
beacon -s -c "M0LTE-2" -d "APRS" 2m "T#002,5,3,5"
beacon -s -c "M0LTE-2" -d "APRS" 2m "T#003,1,2,2"
beacon -s -c "M0LTE-2" -d "APRS" 2m "T#004,0,0,0"

This is a thing. More to come later.