I am using APRS to provide two-way communications between groundstations and high-altitude balloon (HAB)flights. Anyone in the world will be able to "check in" to our airborne "digipeater in the sky" and receive a QSL via email with the exact location above the earth the payload was when they checked in.
Great STEM value, plus the guy I was inspired by (Don, KJ6FO) got me and other groups of people started in HAB experiments using these types of ideas. We are in California, some are in Missouri and Kentucky. Soon to be even wider!!
Thrills come from the heart, not from the head. But if you use your head you will find your heart often follows!
'73 from the sky (via APRS)
- Mike
KA9CQL