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Transatlantic Telephone Cable TAT-1

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The first transatlantic cable was laid in 1956 between Canada and Scotlandspecifically, between Clarenville, Newfoundland, Canada, and Oban, Scotland, a distance of 3,584 km (2,226 miles). This system made use of two coaxial cables, one for each direction, and used analogue FDM to carry 36 two-way voice circuits. With the availability of the cable system, transatlantic telephone traffic increased dramatically, from 1.7 million calls in 1955 to 3.7 million in 1960.


Electron Tubes for the Transatlantic Cable System.

Active Element in Submerged Repeaters: first quarter century

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