Predict your next VHF/UHF lift (not luck—a plan). In today’s video we walk through William Hepburn’s Tropospheric Ducting Forecast and show how to turn those colour maps into real contacts on two metres, seventy centimetres and up into the microwave bands. What you’ll learn in the video The “why” in plain English: warm, dry air sitting over cooler, moist air creates an inversion that bends RF back toward Earth. How Hepburn builds the forecast: upper-air temperature, humidity and pressure from gl
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