[TangerineSDR] 04/19/2022 Whistler Events!!

[Jonathan]

On April 19, Nathaniel and I were treated to some beautiful whistlers here
in Northeast PA! The event detector detected 4 weak whistlers that were
also detected at a VLF receiver in Virginia as well, so they had a large
footprint. They also have a large dispersion measure too. Here are the
spectrograms:

As you can see, they were definitely weak, but delectable. The event
detector used Hough transform that looks for a the characteristic whistler
curve.

Speaking of whistlers with large footprints, here is a whistler with a
footprint of over 900km received in Northeast PA, Virginia, and South
Carolina! It has a dispersion measure of 69:

Jonathan
KC3EEY
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