Contained within the 4th Edition (1974) of the Atlas of Canada is a map that shows make up of the communications network as of 1967 for Eastern Canada. Microwave routes above 750 megacycles per second are shown and are differentiated between message and television routes, message-only routes and television-only routes. As well, the tropospheric scatterwave receiving network is shown. Radio telephone links are denoted along with base stations and remote stations. Landline and submarine cable locations are also indicated.
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