TAT-1, laid in 1955-56 between Gallanach Bay, Scotland, and Clarenville, Newfoundland, as two cables (one per direction) with submerged vacuum-tube repeaters, was inaugurated on 25 September 1956. It carried 35 simultaneous telephone circuits plus a 36th channel for telegraph lines, replacing unreliable radiotelephone links.
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TAT-1, laid in 1955-56 between Gallanach Bay, Scotland, and Clarenville, Newfoundland, as two cables (one per direction) with submerged vacuum-tube repeaters, was inaugurated on 25 September 1956. It carried 35 simultaneous telephone circuits plus a 36th channel for telegraph lines, replacing unreliable radiotelephone links.
The year the first submarine cable carrying telephone calls across the Atlantic was inaugurated.
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Limits Registry. LR-TAT-1-FIRST-TRANSATLANTIC-TELEPHONE-CABLE. First transatlantic telephone cable (TAT-1). 2026.