Explore the fascinating world of radiosonde tracking and repurposing in this 44-minute conference talk from linux.conf.au. Learn how to decode signals from weather balloon-borne scientific instruments using low-cost software-defined radio, a Raspberry Pi, and open-source software. Discover the radiosonde_auto_rx project's development and global application, and gain insights into repurposing Vaisala RS41 radiosondes for high-altitude balloon flights. Delve into topics such as sensors, launch sites and times, software-defined radio, auto rx flow charts, chasing tools, antennas, and prediction methods. Get practical advice on how to start your own radiosonde tracking project and hear a short anecdote from the speakers' experiences. This talk offers a unique blend of atmospheric science, open-source technology, and environmental repurposing for tech enthusiasts and citizen scientists alike.