ISEF / Jugend forscht: radiosonde project

The objective of this project is to develop ultralight radiosondes for long-term measurements in the stratosphere.

This project won First Award and the Craig R. Barrett Award for Innovation at ISEF, the world's largest student sience competition. In addition, the project won national first prize at Jugend forscht, Germany's largest youth science competition.

Developer contact: DL9AS@qsl.net

• ISEF / Jugend forscht: radiosonde project
  • Flight path
  • 4th radiosonde version
    • Hardware
    • Aerial images
  • 3rd radiosonde version:
    • Hardware
    • Assembled radiosonde
  • 2nd radiosonde version with camera:
  • 2nd radiosonde version
    • Assembled radiosonde
  • 1st radiosonde version
    • Assembled radiosonde
  • Balloon
  • APRS packet description

Flight path

On the previous stratospheric flights, the sondes were able to stay in the air for 25 days and circumnavigate the world several times.

4th radiosonde version

The 4th generation radiosonde adds support for aerial imaging.

Hardware

Aerial images

Berlin, Germany	Berlin, Germany
Lubiczyn, Poland	Nitra, Slovakia

3rd radiosonde version:

The 3rd generation radiosonde is ultra light and weighs only 4.8g with solar cells.

Hardware

Assembled radiosonde

2nd radiosonde version with camera:

Aerial image	Radiosonde

2nd radiosonde version

Assembled radiosonde

PCB breakout taps:

Solar cell array:

1st radiosonde version

Assembled radiosonde

Balloon

APRS packet description