Hamsphere QSL cards

Friday, July 14, 2017

VLF Radio communications interacting with particles in space

NASA: HUMANS HAVE INADVERTENTLY CREATED ARTIFICIAL BARRIER AROUND EARTH


http://www.newsweek.com/nasa-barrier-earth-artificial-protect-space-weather-611356


Very low frequency ?

Very low frequency or VLF is the ITU designation for radio frequencies (RF) in the range of 3 kHz to 30 kHz and corresponding wavelengths from 100 to 10 kilometres, respectively. The band is also known as the myriametre band or myriametre wave