60 kHz WWVB Solar Eclipse Radio Propagation Experiments

Conducted by John Magliacane, KD2BD

in 2017, 2023, and 2024

Eclipse Through Clouds
Eclipse Map
Eclipse Projection


The solar eclipses that swept across the continental United States in 2017, 2023, and 2024 provided unique opportunities to study the effects the eclipse might have on radio signals propagating via the Earth's ionosphere.

Three nearly identical propagation experiments were conducted by John Magliacane, KD2BD on the east coast of central New Jersey where relative changes in received signal amplitude and carrier phase of NIST radio station WWVB were observed, recorded, and measured.

These changes were the result of the D-region of the Earth's ionosphere reacting to the effects of the Moon's shadow passing over the Great Circle RF path between WWVB and KD2BD. The D-region is responsible for long-distance radio propagation in the low-frequency (LF) radio spectrum, and is the region that reacts mostly quickly to changes in solar radiation exposure.


The following links provide detailed information on each of these experiments:

References and Further Information

This page was last modified on May 19, 2024.

telegraphy key John Magliacane, KD2BD © 2017-2024
kd2bd <AT> amsat <DOT> org