Submerged repeater for TAT-1, 1956
1956
Brownie crystal receiver and pair of Lissen headphones, 1924-1927
1924-1927
'Radio Times' volume 119 (Coronation Edition)
May 1953
Reporter mobile radiophone, 1951-1953
1951-1953
Strowger calling dial, 1906
1906
High-frequency chokes, 1900-1950
1900-1950
Mirror galvanometer for the transatlantic telegraph, 1858
1858
Lucas grapnel, 1888-1960
1888-1960
Filings coherer, glass tube with side pocket mounted on cylindrical rod with brass screw terminals at ends, 1894-1904
1894-1904
Coherer with coarse brass turnings, 1894
1894
Stock Exchange automatic telegraph, 1872-1880
1872-1880
Samaritans Sign, 1953-1960
1953-1960
Thomson's mirror marine galvanometer, 1858
1858
Syntonic Leyden jars, 1880-1889
1880-1889
Bright's bell telegraph, 1855
1855
Sample of four-core telegraph cable connecting Vancouver Island with the mainland
1904
Cable grappling illustration, 1874-1924
1874-1924
Marconi coherer and Admiralty pattern decoherer, 1900-1910
1900-1910
Aerial inductances, 1901
1901
Specimen of telegraph cable laid in Birmingham in 1856
1856
Filings coherer, glass tube containing powdered copper, bulb at one end, 1894-1904
1894-1904
Wheatstone receiver (Morse inker), 1867
1867
High frequency sliding inductance on wood base, 1900-1950
1900-1950
Filings coherer, Lodge pattern with two wires inserted into bulb at one end, 1894-1904
1894-1904
Lord Kelvin's 'ironclad' marine galvanometer, 1865-1866
1865-1866
Steljes ABC type printing telegraph receiver No. 477
1895-1910
Blotter with Western Telegraph Company markings, 1900-1960
1900-1960
Experimental form of Marconi Company magnetic detector, 1900-1910
1900-1910
Flag from Cable Ship 'Faraday' (sunk 1941), 1923-1941
1923-1941
Specimens of Pacific cable in glazed presentation case, 1902-1923
1902-1923
Hand perforator and copy stand for Wheatstone automatic telegraph system, 1890-1910
1890-1910
'Leiber's Five Letter American Telegraph Code', book issued 1915
1915
Wheatstone's portable ABC telegraph, 1858
1858
Receiving ‘jigger’ used by the Marconi Company, 1899
1899
Morse key with send-receive switch, 1900-1920
1900-1920
Henley needle galvanometer, 1855-1860
1855-1860
Experimental model of Marconi's magnetic detector, 1900-1910
1900-1910
Filings coherer, Lodge pattern, 1895-1900
1895-1900
Atlantic cable specimen, 1865
1865
Morse tape on which signals were recorded by means of a coherer, 1900
1900
Low frequency iron core inductance, 1900-1950
1900-1950
Ashtray and matchbox holder advertising the Eastern Telegraph Company, 1901-1929
1901-1929
Filings coherer, glass tube bent into U-shape at one end with bulb to form side-pocket on mounting bracket with terminals, 1894-1904
1894-1904
Filings coherer, glass tube almost of taper shape, 1894-1904
1894-1904
Stroh's type-printer for Wheatstone ABC communicator, 1870-1881
1870-1881
Filings coherer, Lodge-Muirhead system, 1900-1910
1900-1910
Letter opener with calendar and map, 1893-1894
1893-4
Atlantic Telegraph Cable Souvenir, 1873
1873-1920
Filings coherer, glass tube formed into T-shape at one end and bent round into U-shape at other end with bulb, 1899
1899
Copper busbars and ebonite insulators, 1900-1950
1900-1950