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Echoes in Transmission at 450 Megacycles from Land-to-Car Radio Units

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2 Author(s)
Young, W.R., Jr. ; Bell Telephone Laboratories, Inc., New York, N.Y. ; Lacy, L.Y.

By the use of short pulses of 450-megacycle carrier, the echoes which appear in transmitting from a land station to a moving car in New York City have been investigated. The results show the multiple-path nature of transmission. Sample pictures of the received pulses are given, and, in addition, a statistical analysis of the multiple-path situation is presented. These results are of use in considering the possibilities of systems employing a wide modulation band.

Published in:

Proceedings of the IRE  (Volume:38 ,  Issue: 3 )