Before YouTube few hams made videos. Even if you did the audience would be limited. Video media was not cheap and sharing involved making a copy and posting a tape. Radio clubs sometimes had video presentations. Here in Australia the WIA had a videotape library that clubs could borrow videos from. Amateur television operators also often replayed videos via their repeaters.
One of the famous videos from that era was Dud Charman's Aerial Circus. It's a 1970s lecture to a UK radio club. It had views worldwide in the ensuing decades. Here it is on YouTube for a new generation of hams. With practical demonstrations it shows how antennas really work. It's an hour long but well worth watching.
PS: Want to read more about antennas? Consider this selection of antenna books. They are affiliate links meaning that I receive a small commission (at no extra cost to you) if you decide to purchase.
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