Sunrise and Eclipse Effects on the Ionosphere at Brisbane

Abstract

A rotating spaced.loop direction.finding system, located at Brisbane, has been operated to investigate sunrise effects by using pulsed 3·84 Mcls transmissions, (a) at normal incidence and (b) at oblique incidence. For oblique.incidence recording the transmitter was located at Armidale (bearing 2020 and distant 355 km from Brisbane).