Figure 3 ID: 110030
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look directly at the sun, even through darkened Figure 3ÑA simplified view of the layers of the ionosphereover the period of a day. Figure 4ÑA ground-wave signal. From November 1999 QST © ARRL Your Guide to Propagation, Short Wave ListenerÕs Guide, and Basic Radio Prin- Figure 7ÑMultiple reflections. Figure 8ÑSkip distance and dead zone. 5 MeadwayStaines TW18 2PWUnited Kingdom From November 1999 QST © ARRL By Ian Poole, G3YWXhowever, we must understand the physics behind the magic. Know-Radio Waves and the Ionospherehobby. This primer will fill in some of the blanks and start you on a fascinating journey. Figure 1ÑAreas of the atmosphere.