AmateurLogic: Ham College 74 - Extra Class Exam Questions - Part 12
 

AmateurLogic.TV

///////////////////////////////////////////
Ham College 74 - Extra Class Exam Questions - Part 12

Posted: 27 Feb 2021 02:00 AM PST
http://www.amateurlogic.tv/transmitt...eo/hc74_hd.mp4

E3A Electromagnetic waves: Earth-Moon-Earth communications, meteor scatter,
microwave tropospheric and scatter propagation, aurora propagation,
ionospheric propagation changes over the day, circular polarization.
55:43
This posting includes a media file:
http://www.amateurlogic.tv/transmitt...eo/hc74_hd.mp4