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The results of some oblique-incidence measurements on the ionospheric absorption of radio waves are considered. For both short and very long distances of transmission it is found that there is a marked discrepancy between the observed values and the values calculated from simple theoretical formulae. The contribution of multiple ionospheric reflections to the intensity of the received signal is briefly discussed.
Inspec keywords: radiowave propagation; microwave tubes; electromagnetic wave absorption; ionospheric electromagnetic wave propagation; electromagnetic wave reflection
Subjects: Radiowave propagation; Ionospheric electromagnetic wave propagation