• Propagation forecast - QSL.net

    dx.qsl.net/propagation This page contains a dynamic collection of propagation information gathered from many different sources. This data is extremely useful for ham radio operators and ...
  • Propagation - American Radio Relay League

    www.arrl.org/propagation Propagation information and links to charts. ... Radio waves, like light waves and all other forms of electromagnetic radiation, normally travel in straight lines.
  • Propagation Forecast - Propagation: Propagation Forecast

    www.dxzone.com/catalog/Propagation/Propagation_Forecast On-Line HF Propagation Prediction *One single page* gives you an immediate overview of current shortwave propagation conditions at your location.