Long-distance Radio Reception and the E-Region of the Ionosphere

Abstract

MR. ALEXANDER A. McKENZIE, of the Mount Washington Observatory, has reported a well-marked case of the long-distance reception of amateur 56–60 megacycle signals, which occurs occasionally at this time of year. A letter from him reads in part: “We started listening about 1930 E.S.T. (June 5, 1938) and listened continuously until about 2045. During the whole time, long-distance signals were fading in and out fairly rapidly with extremely audible volume at the start, for instance, of a call letter group and absolute silence before the group was completed.”