North American Stations  

 

 

   
  KL7J Amateur Radio Resources  Radio Wave Propagation by AE4TM
  VE2RMU-VE2RSO The DX Notebook
  The XTAL Set Society KD2BD John Magliacane
  W9XR's Ham Pages AF4K's Amateur Radio Info & Links
  Ham Radio Command Centre Jim Thomas Meteor Scatter Projections
  Sporadic E by W3EP Sporadic E by N1BUG
  VA3SF Amateur Radio Pages