Here’s your video introduction to Section 10.2, “HF Propagation,” from the 11th Edition of the ARRL Extra Class License Manual for Ham Radio.
You can find a complete list of the Amateur Extra videos by clicking here, or click here to go to the YouTube Amateur Extra playlist. Please post your questions either below or on the YouTube page for this video. Good luck in your studies!
Doug, I don’t know of any other. In fact, I’ve never really figured out what DXAtlas is good at doing. 🙁
Dave: In this lesson you demonstrate http://www.DXAtlas.com for gray band propagation.
Are there other free websites you recommend for the same?
73 Doug KE7YVA