The origins...

Early 2005, a Sky & Telescope article mentioned the recording by an amateur astronomer of the effect of a GRB (Gamma Ray Burst) on the Earth ionosphere. This amateur was monitoring radio signals transmitted by VLF (Very Low Frequency) stations hundreds to thousands miles away.

As a child, I used to spend many hours in astronomy books or under the skies. Today, professional constraints impose me to live under light polluted skies and to be less and less available for watching the stars. The monitoring of SID (Sudden Ionospheric Disturbances) appeared to me as a good means to come back to astronomy and gave me the opportunity of discovering a whole new world...
Less than a year after reading the S&T article, after hundreds of hours surfing the web and seeking information, making the VLF receiver and writing software, the SID Monitoring Station was operational.