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1863 __ Bolton’s Portable Field Telegraph
Comment : During 1863 Captain Frank Bolton, an Infantry officer, introduced his Portable Field Telegraph. This was based in principle on the American sounder or acoustic telegraph, but “carried by one man, in the form of a set of accoutrements, the indicator on the shoulder, close to the left ear, the battery in his pouch, and the finger-key, or contact maker, attached conveniently to the waist belt. With a proper supply of covered wire, each man would represent a complete telegraphic station in himself, being able either to send or receive.” It was, being so compact and mobile, a wired ‘walkie-talkie’. (Steven Roberts, “Distant Writing - A History of the Telegraph Companies in Britain between 1838 and 1868”, 2010)
Urls : http://distantwriting.co.uk/telegraphwar.aspx (last visited )

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