Space physics textbook - for basic but more detailed introduction/explanations of solar-geophysical phenomena including aurora and magnetic activity with some fine illustrations Sunspots and Solar Cycle excellent basic introduction sponsored by NASA
Educational Material from the IPS explaining The Sun, Solar Cycle, Solar Minimum and the Next Cycle, the Earth's Magnetic Field and the Effects of the Solar Cycle
FAI Propagation - explanation of the characteristics and geometry of Field Aligned Irregularity propagation with map of contacts and bibliography by IC8FAX
Space Weather primer - brief explanation of the relationship between the sun and earth with excellent pictures and diagrams from Rice University.
A basic introductory site on weather-related VHF/UHF propagation is provided by BBC Engineering . Topics covered include the atmosphere, troposphere, VHF/UHF Propagation and temperature inversions
Propagation - excellent site offers current solar indices, 24-hour and 3-day forecasts, near-realtime map/plots of global MUFs, GOES X-ray flux, auroral activity, solar images and the current greyline
Solar-Terrestrial Activity Page - another excellent site with daily plots of Planetary A, Flux and SEC Sunspot numbers, a commentary on developing solar phenomena and how these may affect radio propagation
Space Weather from Rice University - 'red', 'amber' or 'green' assessment of conditions affecting propagation: Latest Kp, WIND data and USAF forecast plus 'dials' showing latest solar wind density, speed and pressure, the interplanetary field magnitude, polar angle and azimuth and magnetosphere response. In short, the current situation at a glance
Propagation - latest SSN, flux, A, K figures, near-real-time fof2 map for USA and links to auroral activity, alerts, current and medium-range forecasts
BeaconClock program for Windows 95 to assist checking NCDXF beacons. Indicates the next five beacons scheduled to transmit on your selected band, with callsigns, SP and LP beam headings and distance in km. Updated every 10secs. From S R Huntting Inc
Active Beacon Wizard displays the currently active NCDXF beacon on a topographic map along with the solar terminator
BeaconSee program - monitors/displays graphically reception of the NCDXF beacons
IPS auroral alert e-mail service, flags auroras at lower-than-usual latitudes. To subscribe either click 'mail-lists' at the IPS site or e-mail
with message subscribe rwc-aurora-alert your_email_address
Aurora forecast maps from Fairbanks Geophysical Institute. Can also be found here. The forecasts are for the Fairbanks area. This site also holds auroral animations and video
Solar Activity Plotting Program WA4TTK offers this program (v3.01), which is said to update solar flux and sunspot number databases automatically when it scans new propagation bulletins.
Meudon Observatory includes Monthly Kp from Gottingen, monthly SIDC Data from Brussels, charts of 10cm solar flux for last 25 days with forecast for next three days
Images from the Solar & Heliospheric Observatory is available from NASA. SOHO is about 1 million miles from earth, on the sunward side, at the point where the earth's and sun's gravitational pull are equal. Striking images and simulations.
Daily USAF/NOAA HF Forecast, 27-day forecasts e-mail to
with message Subscribe propagation forecast as from the Central USA, posted here monthly and archived since February 1988.