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HF Propagation and Earthquakes





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posted by pod_feeder_v2
HF Propagation and Earthquakes
Ted diaspora
For all the money amateur radio operators spend on gear, most of it is useless without the cooperation of the ionosphere. Making contact with someone beyond the line of sight relies on bouncing your signal off something, and more often than not, that something is the refractive layer of charged particles swarming a couple of hundred kilometers overhead. The layers of the ionosphere ebb and flow on a diurnal basis, primarily under the influence of ionizing radiation from the Sun. Hams are tuned into these cycles, and anything that alters the state of the ionosphere is a topic of considerable interest in radio circles.
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