Some radio hobbyists already have a receiver they'd like to use, and have asked us if that's ok. The answer is "Probably, yes." Here's how:

For the EclipseMob experiment, you will make three recordings: the day before the eclipse, during the eclipse, and the day after the eclipse. These will be used to compare how the ionosphere behaves on a normal day to how it behaves during an eclipse.


The EclipseMob app performs a simple test to determine whether WWVB's signal is present in your recording. Here's how to use it.

The EclipseMob app records data over the audio input of your smartphone.  Here's how we will use it.

Find out more about the experiment, why we care, and a diagram of the experiment here! 

Our experiment relies on National Institute of Standards and Technology (NIST) radio station WWVB in Fort Collins, Colorado, which constantly transmits time synchronization information on a 60 kHz carrier frequency.  

When will you get the best signal from WWVB?