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Telstar maser assembly with magnet, 1962-1967

Radio Communication

1962-1967

three-nail microphone, 1875-1880

Telecommunications

1875-1880

Sample of 1851 Dover-Calais telegraph cable, 1851

Telecommunications

1851

BBC L1 lip microphone, 1937-1960

Television

1937-1960

Hollerith 45 column horizontal electrical sorting machine, 1920-1930

Computing & Data Processing

1920-1930

William Thomson's marine mirror galvanometer, 1850-1900

Telecommunications

1854

Bell telephone, mahogany case, 1878

Telecommunications

1878

Specimen of the first transatlantic telephone cable, 1956

Telecommunications

1956

Radio equipment comprising:- one-valve, home-constructed self-excited transmitter

Radio Communication

1922-1923

Specimen of Dover-Calais telegraph cable, 1851

Telecommunications

1851

stock exchange automatic telegraph, 1872-1880

Telecommunications

1872-1880

sample of deep-sea section of first transatlantic cable, 1857-1858

Telecommunications

1857-1858

Portion of the first submarine cable between Dover and Calais, 1850

Telecommunications

1850

Two-wire telephone repeater, 1923-1925

Telecommunications

1923-1925

selector switch, 1903

Telecommunications

1903

Glass tube containing a portion of the first submarine cable laid between Dover and Calais, 1875-1913

Telecommunications

1875-1913

Mobile telephone call box from Cameroon, 1997-2012

Telecommunications

1997-2012

Morse sounder, 1835-1910

Telecommunications

1835-1910

Crossley telephone receiver, 1880

Telecommunications

1880

Standard morse key, 1880-1950

Telecommunications

1880-1950

Hand perforator and copy stand for Wheatstone automatic telegraph system, 1890-1910

Telecommunications

1890-1910

Clockwork interruptor, once owned by David Hughes, 1875-1880

Radio Communication

1875-1880

Britannia telephone wire joint specimen, 1900-1980

Telecommunications

1900-1980

Model of wire screen in octagonal frame used by Heinrich Hertz, 1949

Radio Communication

1949

Experimental microphone, 1878-1890

Telecommunications

1878-1890

section of first telegraph cable, 1837

Telecommunications

1837

Model of the ‘Optimus’ water closet, England

Domestic Appliances

1870

Cooke and Wheatstone 5-needle telegraph, 1837

Telecommunications

1837

Prototype ‘Manpack’ ground terminals, 1980-1989

Space Technology

1980-1989

Logic door from a Ferranti Mark I computer, 1951

Computing & Data Processing

1951

Central Battery transmitter (sectioned), 1903-1926

Telecommunications

1903-1926

Specimen of TAT3 cable, 1963

Telecommunications

1963

two-valve short wave radio - telephonic receiver, 1927

Radio Communication

1927

Branly tripod coherer, 1900-1910

Radio Communication

1900-1910

Ring transformer, 1892

Telecommunications

1892

Cylindrical condensing chamber

King George III

1761

System X circuit board from digital switching subsystem, 1980

Telecommunications

1980

Section of TAT-8 transatlantic optical fibre cable, 1989

Telecommunications

1989

Double-current telegraph key, 1830-1900

Telecommunications

1830-1900

Wall telephone with battery box, 1880-1940

Telecommunications

1880-1940

Cooke and Wheatstone's ABC telegraph transmitter

Telecommunications

1840

Models of two parabolic zinc reflectors used by Heinrich Hertz, 1949

Radio Communication

1949

replica of Bell's 1876 centennial telephone transmitter, 1959

Telecommunications

1959

Billi condenser used for aerial tuning in Newfoundland, 1901

Radio Communication

1901

Receiving ‘jigger’ used by the Marconi Company, 1898

Radio Communication

1898

Billi condenser used for aerial tuning in Newfoundland, 1901

Radio Communication

1901

main frame, for Automatic Computing Engine (ACE) pilot model, 1949

Computing & Data Processing

1949

Copy of the receiver and alarm call of Schilling's electric telegraph, 1870-1877

Telecommunications

1870-1877

Edison telephone peg switchboard and pegs, 1879

Telecommunications

1879

Experimental carbon pencil microphone, 1878-1890

Telecommunications

1878-1890

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