VLF: Auroral Chorus

[Wolfgang Büscher <dl4yhf@freenet.de>]

Greetings all,

Those who -by chance- read this message in time:
At the moment there is "Auroral Chorus" audible in Europe on VLF (a few 
kHz).
Those calls (similar to panicing blackbirds) are not picked up by a 
microphone - they are mother earth's (rare) morning radio concert.
In these latitudes a very rare event.

Cheers,
 Wolf .