Here’s your video introduction to Section 3.1 of the ARRL Extra Class License Manual for Ham Radio. These introductory videos provide you with explanatory material to prepare you to better understand the material in the manual.
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When you have finished viewing the video, studying the material in the manual, and ensuring that you understand the answers to all the pertinent questions in the question pool, you may return to the list of videos by clicking here.
Good luck with your study!