Transcription of Radio Waves and the Ionosphere
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Radio Waves and the Ionosphere
From November 1999 QST ARRLBy Ian Poole, G3 YWXadio propagation via the Ionosphere is a fascinating andimportant means of long-distance Radio of hams and commercial operators use theionosphere every day to make contacts over vast dis-tances. To effectively use these propagation modes to their fullest,however, we must understand the physics behind the magic. Know-ing when to listen, the best frequencies to use and where signalsmight come from enable experienced DXers to work stations whenless-experienced operators come up short. In fact, knowledge ofpropagation and a feel for conditions and what each band mightproduce are valuable commodities for any Radio AtmosphereBefore we look at how signals are reflected by the ionospherewe must see where these reflections take place and how the re-flecting areas are formed.
From November 1999 QST © ARRL By Ian Poole, G3YWX adio propagation via the ionosphere is a fascinating and important means of long-distance radio communication.
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