Accession Number : AD0252121

Title :   RECEPTION OF WWV AND WWVH IN NORTHERN CANADA

Corporate Author : AVCO CORP WILMINGTON MA RESEARCH AND ADVANCED DEVELOPMENT DIV

Personal Author(s) : HERMAN, JOHN R. ; PENNDORF, RUDOLF B.

Report Date : JAN 1961

Pagination or Media Count : 1

Abstract : UI T-DAY DIURNAL, S ASONAL, AND LATITUDE VARIATIONS IN RECEPTION QUALITY OF WWV and WWVH transmissions on six frequencies from 2.5 to 25.0 mc at five northern Canadian stations between 45 degrees and 75 degrees N latitude are given. Solar, propagation-mode, and auroral effects on these transmissions are considered. The investigation shows that the ori ntation of transmission path with respect to auroral zone affects reception quality on long paths (WWVH), and reception improves going northward. It appears that a tilt mode of propagation on long path is possible at times when sunrise occurs simultaneously near the two end points of the path. On magnetically quiet days, WWV (15.0 mc) reception has been possible for all hours of the day regardless of season during sunpot maximum of 1957-1958. (Author)

Descriptors :   *IONOSPHERIC PROPAGATION, *RADIO RECEPTION, *RADIO STATIONS, *RADIO TRANSMISSION, ABSORPTION, AURORAE, HIGH FREQUENCY, IONIZATION, IONOSPHERE, PROPAGATION, RADIO BROADCASTING, RADIO WAVES, SOLAR ATMOSPHERE.

Distribution Statement : APPROVED FOR PUBLIC RELEASE