Solar Eclipse QSO Party


The SEQP will take place on August 21, 2017 from 1400 – 2200 UTC.
Partial eclipse begins at about 1600 UTC in Oregon ends at about 2015 UTC in South Carolina.

On August 21, 2017, a total solar eclipse will cause the shadow of the moon to traverse the U.S. from Oregon to South Carolina in just over 90 minutes causing dramatic changes in both the ionosphere and HF propagation. The Solar Eclipse QSO Party (SEQP) is a HamSCI-ARRL sponsored operating event to generate data to study ionospheric changes during the eclipse. Not a ham radio operator yet? Learn more about it from the American Radio Relay League.



  • Sample Log File (See bug notice below...)
  • N1MM+ now has a built-in SEQP logging module. Simply select "ECLIPSE" for log type. (Thanks to Nick NA3M for coding this!)
    • Bug notice: The current version of N1MM+ (v1.0.6559) has a bug that prevents signal reports from being saved to the Cabrillo file for ECLIPSE log types. This bug should be corrected in the next public release of N1MM+.
  • Logs must be submitted by 2359 UTC Saturday, September 30, 2017.



2017 Hamvention SEQP Presentation