Radio Propagation Conditions

• Real-time Solar/Propagation Conditions
  Check here for a real-time report on global solar and propagation conditions, in graphical form, including calculated MUFs, foF2 critical frequency measurements from Australia, solar flux measurements from Canada, and a complete history of the current and previous solar sunspot cycle.
• Weekly Solar and Geophysical Summary and Forecast
  Prepared by the U.S. Dept. of Commerce, NOAA, Space Environment Center
• Real-time Aurora Conditions 
  View current North Polar aurora conditions - in real-time - courtesy of auroral radar at the University of Alaska. Also view the boundaries of the aurora - measured in real-time by satellites, or follow the link at the page bottom to European aurora conditions.
• Solar Terrestrial Dispatch - EXCELLENT
• Space Environment Center's Radio User's Page - various forecasts of interest to HF and other radio operators.
• Real-time Day/Night Terminator
  If you chase DX, you know that interesting propagation conditions often form along the so called "gray line" marking the boundary between day and night. You can view the current day/night boundaries, in real-time.
• Real-time Current HF Radio Propagation and Space Weather Report
  From the Australian Space Forecast Centre. Covers both Australia and the southern hemisphere and now includes real-time data for North America. Excellent data resource and graphical representation of current conditions.
• WWV: More Than Just The Time
  By Larry Phillips, KC7LVZ, 6 July 1998, Special to Ham Radio Online
  In this story, KC7LVZ explains the meaning of the solar flux values, A-Index, K-index and the earth's geomagnetic field. Use this reference to help you interpret the radio propagation report.
• Ten-Ten International's list of 10 meter beacons
• ARRL propagation forecasts
• AD5Q's Propagation Report
• Online VHF/UHF Grid Square Map from W6AMT
• Today's Space Weather Forecast
  Text report from the Space Environment Laboratory of the U.S. government.
• Meteor Shower Information
• Real-time Live Shortwave Audio!
  Control a Drake R8 receiver by remote control over the Internet! Tune to a frequency and listen to the result.