By using raytracing to compare these observations with the SAMI3 model, it was found that the majority ofthe 14 MHz signals refracted off the ionosphere at heights less than 125 km (E region). On the lower bands, 1.8, 3.5, and 7 MHz, it was found that signals likely refracted off heights greater than 125 km (F region). These observations suggest an eclipse-induced weakening of the ionosphere, and are consistent with numerous prior HF radio eclipse ionospheric studies.
In total, the SEQP generated over 618,000 RBN spots, 630,000 WSPRNet spots, 1.2 million PSKReporter spots, and 29,000 log QSOs. This paper, along with the geolocated RBN data with solar eclipse obscuration values used in the paper, are being published under an open-access license to allow for further research. The data files can be found under the Supporting Information section of the paper. Additional HamSCI eclipse data can be found at https://zenodo.org/communities/hamsci.