Here's a screen recording of the Featherweight GPS doing its magic, tracking my Formula 98 to 3,500' at the WOOSH launch at Richard Bong Recreation Area. The 4" fiberglass rocket was launched on the Aerotech J540R for an initial shakedown flight on August 20, 2023. I thought I'd record the iPhone screen so you can see and hear the Featherweight GPS in action.