Sitemap: 
Sitemap: 
| • AAVSO (American Association of Variable Star Observers) SID Program |  |
| • SID data 1958-present from NGDC (National Geophysical Data Center) | |
| • Radio Waves below 22kHz - Articles on VLF, ELF and ULF signals | |
| • SID-GRB@home - A collection of links and information on SID, GRB and various station designs | |
| • SpaceWeather.com - News and Information about the Sun-Earth environment | |
| • Space Weather Prediction Center (formerly Space Environment Center - SEC) | |
| • 3-day GOES X-ray Flux Monitor (GOES measurements) | |
| • 6-hour GOES X-ray Flux Monitor (GOES measurements) | |
| • GCN: The Gamma ray bursts Coordinates Network | |
| • GCN Circulars Archive | |
| • Ionosphère : région D, sondage passif et propagation des signaux LF et VLF Jean-Jacques Delcourt, Hermes Science Publications (in french only) | |
| • Radio Nature Renato Romero, IK1QFK, Radio Society of Great Britain | |
| • How To Build Your Own Radio Telescope Percival Andrews'e eBook describing the theory and practice of building a SID monitoring station | |
| • NCSIDO - Northern Colorado Sudden Ionospheric Disturbance Observatory (Colorado, USA) Station description and real-time measurements | |
| • Moore Observatory VLF Monitor (Kentucky, USA) John Kielkopf's station with access to real-time measurements | |
| • Kiel Longwave
Monitor (Germany) Peter Wilhelm Schnoor's station monitoring the HBG longwave time signal transmitter on 75kHz, with access to real-time measurements | |
| • Station monitoring NDT (Ebino, Japan) with access to real-time measurements | |
| • DMOZ - Open Directory Project (French)) | |
| • DMOZ - Open Directory Project (English)) | |
| • Yagoort Directory | |
| • WebRankInfo Directory (French) | |
| • Net-Liens Directory (French) | |
| Last Update: 19 Jun 2008 |
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since Jul 03,2009 |
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