2017 Total Solar Eclipse

Map of US Eclipses from 2017-2052

On 21 August 2017, a total solar eclipse caused the shadow of the moon to traverse the United States from Oregon to South Carolina in just over 90 minutes. Although the ionospheric effects of solar eclipses have been studied for over 50 years, many unanswered questions remain. HamSCI invited amateur radio operators to participate in a large-scale experiment which characterized the ionospheric response to the total solar eclipse and targeted open science questions.

Hundreds of ham radio operators helped out by getting on the air with the Solar Eclipse QSO Party, a contest-like operating event designed to generate data for studying the eclipse. Other HamSCI experiments included making HF Frequency Measurements, recording HF spectra, setting up a Reverse Beacon Network Receiver, particpating in VLF/LF receiving experiements, and listening to AM broadcast stations. See our Eclipse Get Involved for more information.

Are you curious about how prior total solar eclipses affected the ionosphere? Read about radio experiements during the 1999 United Kingdom Total Solar Eclipse coordinated by the Rutherford Appleton Laboratory.




Get on the air with the Solar Eclipse QSO Party!

Get Involved!

How can hams and the general public get involved?

The Experiment

Details of the plan to study the 2017 solar eclipse.


Join the HamSCI-Eclipse Mailing List


HamSCI will be present at the 2022 Dayton Hamvention in order to further its goal of connecting the ham radio and scientific communities. Support for the 2022 HamSCI Hamvention activities comes from The University of Scranton, the Yasme Foundation, TAPR, the National Science Foundation, NASA, and volunteers like you.

A description of the hardware of the Grape Version 1 Personal Space Weather Station by John Gibbons N8OBJ, Kristina Collins KD8OXT, David Kazdan AD8Y, and Nathaniel Frissell W2NAF was published in the journal Hardware-X, entitled Grape Version 1: First prototype of the low-cost personal space weather station receiver. The full paper is available from https://doi.org/10.1016/j.ohx.2022.e00289.

A team of HamSCI researchers led by Nathaniel Frissell W2NAF just published a new article, First Observations of Large Scale Traveling Ionospheric Disturbances Using Automated Amateur Radio Receiving Networks, in the American Geophysical Union journal Geophysical Research Letters. The article looks at an event from November 3, 2017 to demonstrate how a large-scale disturbance moving through the ionosphere can affect the communications distances on the 14 MHz (20 m) amateur radio band. On this day, a 2.5 hour oscillation could be seen in the minimum distance of 14 MHz contacts recorded by the Reverse Beacon Network (RBN)Weak Signal Propagation Reporter Network (WSPRNet), and PSKReporter.