BASE

Presently, the program uses high altitude weather balloons to carry scientific experiments into the stratosphere. 

The experiments are designed by DePauw students and by students at various schools in West Central Indiana. Radios operating in the amateur radio bands relay positional information obtained from the Global Positioning Satellite network to tracking teams on the ground.

Most recent flight:

BASE 123 30 July 2025 Launched from Julian Science and Mathematics Center.  Single balloon with two Geiger Counter arrays. Balloon burst at 29 km. Landed in cow pasture between Coatesville and Amo in Hendricks County, Indiana.

Resources

• A brochure describing the program

• Summary of BASE flights 

• High Altitude Chamber Construction Manual

• High Altitude Chamber Operations Manual

• Flight prediction webpage 

• BASE You Tube Channel

• Some flight profiles are available from Google Earth (select your flight(s) under "Places") 

• Live Tracking at: aprs.fi/w9yj-11 or map.findu.com/w9yj-11