Radio echoes have been observed in two narrow-beam aerials over the period October 1949 to September 1951. An analysis of the hourly rate of echoes has given a measure of the radiant points of sporadic meteors. The radiants are found to be concentrated towards the plane of the ecliptic in the directions of the apex, Sun and antihelion points. The majority of meteors in space are moving in direct orbits about the Sun, and there is a dense complex of orbits in the region traversed by the Earth during the months May to August.