2017 Total Solar Eclipse

Map of US Eclipses from 2017-2052

On 21 August 2017, a total solar eclipse will cause 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 is inviting amateur radio operators to participate in a large-scale experiment which will characterize the ionospheric response to the total solar eclipse and target open science questions.

Would you like to participate? Help 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 ways to get involved include 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


Members of HamSCI presented at the 36th Annual ARRL and TAPR Digital Communications Conference September 15-17, 2017 in St. Louis, Missouri. The TAPR/ARRL DCC is an annual conference that attracts technically-minded amateur radio operators who specialize in building and designing hardware and software to support digital communications and radio. In a presentation entitled HamSCI and the 2017 Total Solar Eclipse HamSCI members Nathaniel Frissell W2NAF, Bill Engelke AB4EJ, Josh Katz KD2JAO, Spencer Gunning K2AEM, and Josh Vega WB2JSV showed initial results of the Solar Eclipse QSO Party and other HamSCI eclipse experiements.

We've been contacted by several individuals regarding submission of observations of effects during the eclipse to HamSCI recently. Any such material - logs, reception reports, and records of other observations - is welcomed by HamSCI. We encourage you to email these to hamsci@hamsci.org.

Larger data sets - raw I/Q data recordings or large audio files, for instance - can be submitted to the HamSCI community on Zenodo if they are too large to email. Create an account there to do this, or log in with your GitHub or ORCID account to do so. Zenodo has a 50GB limit per data set, so those of you who recorded multiple bands may need to submit each band as a separate data set. Thank you to everyone who took part in this and submitted observations of any kind!

After eight short hours, the Solar Eclipse QSO Party has come to a close. Particpation was quite good. Although the final numbers are not yet in, preliminary reports show that over 670,000 spots were detected by the RBN, and over 542,000 spots were reported to PSKReporter during the SEQP. These numbers will increase as data is processed. SEQP participants are requested to submit their logs and RBN data (spots.txt) to hamsci.org/seqp. A PDF Certificate of Participation will be provided on log submission.