RCA 955 Acorn UFH triode vale (McVitie Weston valve collection), 1935
1935
Selector switch, 1903
1903
Magneto-ringing Ericsson telephone, 1892-1920
1892-1920
Wall telephone with battery box, 1880-1940
1880-1940
Powdered graphite microphone, 1878-1890
1878-1890
Impulse sender (dial), 1915
1915
Mechanical telephone, 1880-1920
1880-1920
Loading coil, 1910-1930
1910-1930
Enamelled notice regarding stone throwing, 1910-1936
1910-1936
'You may telephone from here' sign, 1910-1936
1910-1936
Crossley table telephone, 1879
1879
Mullard video output pentode, T.S.P.4, 1920-1936
1920-1936
Amateur radio call books, 1938 and 1951
1938 and 1951
Home-made equipment for 30-line television reception, 1929-1935
1929-1935
Volume 1 No. 1 of "Television" monthly magazine, 1928
1928
Five-line single cord switchboard, 1900-1909
1900-1909
'Radio at a glance' chart, 1925-1935
1925-1935
Wartime civilian receiver A.C.mains type, 1944-1945
1944-1945
Wall telephone, 1880-1920
1880-1920
Demonstration radio receiver
1926
Experimental microphone, 1878-1890
1878-1890
A T & T national telephone directory, October 1896
1896
Experimental carbon block microphone, 1878-1890
1878-1890
Strowger automatic telephone, 1901-1910
1901-1910
Silicon crystal for wireless telegraphy, mounted in a locket, 1906-1916
1906-1916
Table instrument with dial, 1903
1903
Specimen of television cable, 1936
1936
Experimental microphones with carbon pencils and cups, 1878-1890
1878-1890
National Telephone Company directory, 1898-1899
1898-1899
Granular microphone in glass tube, 1878-1890
1878-1890
Strowger calling dial, 1906
1906
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
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
Marconi coherer and Admiralty pattern decoherer, 1900-1910
1900-1910
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
Filings coherer, Lodge pattern with two wires inserted into bulb at one end, 1894-1904
1894-1904
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
Wheatstone's portable ABC telegraph, 1858
1858
'Leiber's Five Letter American Telegraph Code', book issued 1915
1915
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