Lights on why 160 meters is so unpredictable and whatâ??s being done to reveal its secrets
Global real time ionospheric foF2 map
Propagation forecast for the southern African region by SANSA
The Estimated 3-hour Planetary Kp-index plot
Long path hf radio propagation is sometimes the best path to work dx, since the shortest path is not always the best path.
Theory to explain solar cycles variability proposed by Jean-Pierre Desmoulins
History, activity, glossary and modern reseach about suspots
F2 and TE propagation on 6 meter
NOAA / Space Weather Prediction Center, Geomagnetic K-indices and Running A-indices, Local Noon Solar Radio Flux, Daily Solar Indices with SSN
William Hepburn's Daily Tropospheric Ducting Forecast.
Sunspot cycle closely following prediction by Science @ Nasa
Meteor Shower, Aurora, Sporadic-E and Solar Flares detected using Radio Signal Reflection, by Andy Smith, G7IZU. Live waterfall displays from three receivers, live Es propagation maps.
Online professional-grade high-frequency (3-30 MHz) propagation predictions
Live space weather and propagation data, in RSS (XML) format.
What the Numbers Mean, and Propagation Predictions--a brief introduction to propagation and the major factors affecting it.
Near Vertical Incidence Sky Wave (NVIS) Propagation, PPT presentation by Marc C. Tarplee, Ph.D. N4UFP
This website is dedicated to Radio Mobile.
Radio Mobile is software by Roger Coudé VE2DBE. The program simulates RF propagation and is for free to the amateur radio community.
All you want to know about Radio Mobile can be found here.
The short history of the SSN Smoothed Sunspot Number at Luxorion
This is a propagation prediction program tailored to the serious contester
Solar Region Data Current Regions with Sunspots Summary, an useful tool for predictions