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I doubt if Brandon Weatherz could possibly be the real name of a meteorologist, but maybe it was preordained he'd go into forecasting with a moniker like that. In any event, the on-air weatherman for WDIO-TV in Duluth, Minnesota recently tried to explain to viewers how they could get AM radio signals from thousands of miles away when the sun goes down. (Although I've never put the word "the" in front of "skip.")
Did he succeed? Check out the video and see what you think.
Weatherz School: The skip & AM radio
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I take it that it was "well received"
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When I was in grade 9, in my very early DX days, I asked my science teacher about this. He gave a pretty similar explanation. He mentioned WWVA and WLW as examples of stations I could listen to regularly at night but never during daylight hours. It would be later that I discovered about the 750 mile clear channel protection zone and sunset transmitting pattern changes.