Eclipse 2017 Effects on Asia/Pacific HF Broadcast Propagation

The mid-morning timing of the Eclipse of 2017 on the West Coast of North America gave the opportunity to see if HF radio propagation between Southern California and the Asia/Pacific region would be temporarily restored to near-dawn conditions. The tests involved observing the strength of HF broadcast stations in Asia and the Pacific whose signals were traveling through or near the eclipse path. The report includes the methodology, baseline data and data taken during the eclipse. The analysis of the data showed a very significant improvement in lower frequency propagation from the Asia/Pacific region during the eclipse period.