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February 28th 21, 06:55 AM
posted to rec.radio.amateur.misc,rec.radio.amateur.equipment,rec.radio.amateur.homebrew,aus.radio.amateur.misc,rec.radio.info
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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 |
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