Eclipse and Frequency Measurement Festivals are worldwide citizen science campaigns in which hams and shortwave listeners measure Doppler shift from their home stations, using their regular HF receivers.
Festival Pages
- Spring 2022 Sunrise Festival
- December 2021 Eclipse Festival of Frequency Measurement
- June 2021 Eclipse Festival of Frequency Measurement
- December 2020 Eclipse Festival of Frequency Measurement
- June 2020 Eclipse Festival of Frequency Measurement
- WWV Centennial Festival of Frequency Measurements