Regular and numerous measurements of individual radiants and velocities of meteors were carried out in Jodrell Bank (Davies and Gill, 1960), Kharkov (Kaščeevet al., 1960; Kaščeev and Lebedinec, 1961), Adelaide (Nilsson, 1964) and as part of the Harvard Radio Meteor Project in U.S.A. (Hawkins, 1962). Observed distributions of radar meteor orbits obtained from a great number of systematic observations have been published up to now only at Jodrell Bank (Davies and Gill, 1960) and Kharkov

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... al., 1960; Lebedinec and Kaščeev, 1966). 2474 orbits for meteors about + 5mto + 7mhave been obtained in Jodrell Bank, 12500 orbits for meteors brighter than about + 7mhave been obtained in Kharkov.