L.F. AND M.F. PROPAGATION: a study of sky-wave field-strength variation

摘要

LF and MF sky-waves vary in strength during periods which may be as short as a minute or as long as 11 years;this range includes day-to-day, diurnal, seasonal and solar-cycle variations. A detailed study has been made of all that is known about LF and MF sky-wave field-strength variation and this has been supplemented by further analysis of measured data.