June 1957 | NTIA Sponsor Report NBS Report 5090

A Study of Auroral Zone Attenation of High Frequency Radio Waves

Vaughn L. Agy

Abstract: This is the sixth quarterly progress report on a study to obtain quantitative information on the additional attenuation suffered by radio waves traversing the auroral zone. For many years it has been known that ionospheric radio wave propagation in the Arctic is far less reliable than at temperate latitudes. In order to determine the nature and extent of the unreliability, a program of high frequency continuous relative field strength recording was begun in September 1955 with receivers at Anchorage and College, Alaska. CW transmissions from WWV (Washington, DC) and WWVH (Maui, T.H.) On 10 and 15 Mc and from Bismarck, N.D. on 7.815 and 10.905 Mc have been recorded at both stations since then.

Keywords: ionospheric propagation; field strength

Disclaimer: Certain commercial equipment, components, and software may be identified in this report to specify adequately the technical aspects of the reported results. In no case does such identification imply recommendation or endorsement by the National Telecommunications and Information Administration, nor does it imply that the equipment or software identified is necessarily the best available for the particular application or uses.

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