Links to Propagation Tools:

• AD5Q Propagation Bulletins (August 1995-January 1999)
  Although no longer issued, these bulletins contain many insights into seasonal- and sunspot level-related propagation variations.
• ARRL Propagation Forecast Bulletins (May 1995- )
• Earth View
  A near real-time grayline map provided by John Walker, Fourmilab, Switzerland
• G3USF's Worldwide List of 50 mHz Beacons
• G3USF's Worldwide List of HF Beacons
• hf-radio.org propagation; includes the NW7US Propagation Alert
• Introduction to HF Radio Propagation
  Australia's IPS Radio & Space Services provides a nicely organized overview of HF radio propagation theory. Images and graphs enhance the presentation.
• NCDXF/IARU Beacon Transmission Schedule
• Near-Real-Time MUF Map (Solar Terrestrial Dispatch)
  Offers a wealth of propagation prediction information, graphically presented, including: Radio Auroral Zones; MUF contour lines; Grayline. The map is updated every five minutes.
• Realtime Propagation Monitor
  By LA7SL, shows important solar, ionospheric, and geomagnetic information useful in calculating and predicting present and near future radio-propagation. "DX Summit" DX spots and propagation bulletins are also provided.
• Solar-Geophysical Data (from the Space Environment Center)
• Space Environment Center: Radio Users Page (Solar Activity Reports)
• Transequatorial Radio Propagation
• VOACAP Quick Guide by OH6BG A guide to using VOACAP - a free professional HF prediction program from NTIA/ITS, originally developed for Voice of America (VOA)
• WM7D's Solar Resource Page
• WORLDTIME Terminator/Gray Line Globe
• WWV Propagation Report
• Zone to Zone FOT Propagation (Radio Sport Canada)
  About Zone Prop

DX-related Software

• ACE-HF; Professional Propagation Software for HF Radio Operators
• BeaconSee
  Alerts to band openings in real time by monitoring the rx audio tuned to the IARU/NCDXF beacon network using a PC's soundcard
• DX Telnet
  For the use on the Internet DX Clusters and to allow multiple split screens, back-spacing, voice on DX spots etc.
• HamInfoBar
  Web browser toolbar for Ham/SWL DX enthusiasts; compatible with IE + FF under Windows and FF under Mac/Linux
• KawAZ Azimuth Angle Calculation Program for Radio Amateur -- Freeware from Toru, JH0CJH
• MultiNEC Combines antenna modeling and propagation predictions and lets you automate and animate both.
• Programs to Help NCDXF/IARU Beacon Listeners
• VE3SUN DX Monitor
  Windows shareware to organize and display data from the cluster system; incorporates propagation and other information and is customizable according to user's preferences
• WinCAP Wizard 3
  From Kangaroo Tabor Software this program offers high frequency radio communications system analysis and propagation prediction.