ARRL Web:The American Radio Relay League
Astronomy Magazine
Sky and Telescope Magazine
International Listening Guide
Canwarn
Lightning strikes.
Royal Astronomical Society of Canada Windsor Center
Greenfield Village and Henry Ford Museum
SPRARC
Border city radio club
Propagation forecast
Yaesu
MFJ Enterprises,Inc
Radio World
Mitrek Information
Jameco Electronic Components
Thomas A Edison Papers
Web remote shortwave radio
QRZ
Live
Satellite tracking
Seti@home Search for Extraterrestrial Intelligence
On line VLF Radio.