Abstract

Fading rates of transequatorial h.f. signals are evaluated from observations on the paths LindauRoma and Tsumeb-Lindau which cross the equatorial zone of Africa. The fading characteristics on both paths are shown to be correlated. A comparison with transequatorial pulse transmission, which indicates off-great-circIe propagation due to spread-F irregularities, gives evidence for a high correlation between the fading of c.w. signals propagating on transequatorial paths and the occurrence of off-great-circIe propagation due to equatorial spread-F irregularities.

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