Voice Across the Sea

aboard Agamemnon American Telephone amplifier armouring Atlantic cable Atlantic Telegraph Company Bell Labs Bretts British Post Office cable ship cable-laying carried circuit Clarenville coaxial cable coils communications complete conductor copper Cyrus Field deep-sea distance earth Eastern electrical electronics engineers England Europe feet flexible repeaters frequencies grapnel gutta-percha Heaviside Heaviside's hundred miles instruments insulation invented ionosphere Isambard Kingdom Brunel land later layer laying length London looking mathematical messages miles of cable minute Monarch Morse never Newfoundland Niagara ocean Oliver Heaviside once operation passed paying-out possible problem produced radar radio waves realised received rigid repeaters route sailed scientists sea-bed signals single sound speech splice stations submarine cable submerged repeaters tele telegraph cable tests Thomson thousand miles tion tons transatlantic telephone cable transmitted United vacuum tubes Valentia Whitehouse wire words وو