HF Propagation 

An Introduction to HF Propagation
By: Steve Foy – N4FOY & Paul White – N4WGL
Dated: October 1, 2016
Credits:
     This presentation is adapted from an article by Dennis J. Lusis, W1LJ, appearing in QST magazine December, 1983.
     Thank you to Paul White, N4WGL, for advice and counsel in creating this presentation.
     Part of the Tech Series of Presentations at the Upper Pinellas Amateur Radio Club (UPARC)
Permission Rights:
​     Used by permission granted to TVARC's President (Earle Hancock/KM4ISN) by Steve Foy/N4FOY on January 16, 2017

Picture
Click on above Ionosphere diagram for presentation in Adobe Portable Document Format (PDF)
This PowerPoint presentation (slides) provides a basic overview of how radio waves propagate long distances.  Here's a list of the major topics covered in this presentation:
  • Overview of Propagation
  • The Ionosphere & Layers
  • Refraction
  • Multi-hop Propagation
  • Effects of the Sun
  • Propagation Predictions / Further Reference
  • Summary / Q&A

To view a PDF of this presentation click here





NEW FEATURE:
A mini-course on Space Weather, and Solar Activity. A series of YouTube videos by the "Space Weather Woman", Dr. Tamitha Skov/WX6SWW.
​For a mini course on The Solar Activity Cycle. OK, not so mini, 1 hour:43 minutes in length, so have a seat and enjoy.
A second in the series: Sunspots & Telescopes. 1 hour:31 minutes
Number 3 in the series: All About Indices. 2 Hours:29 minutes
Number 4 in the series: Freeform Live Q&A. 1 Hour:57 minutes
Number 5 in the series: Coronal Mass Ejections and Aliens. 3 Hours:7 minutes
For some more articles on HF Propagation, see the ARRL website.