Two Triode Valves Type 4242A from Daventry short-wave transmitter, unknown maker, 1925-1970 Triode valves from Daventry short-wave transmitter Radio Communication 1925-1970
Small Hertzian oscillator, made by E E Robinson, England, 1894. Used by Oliver Lodge in his lecture before the Royal Institution on 1 June 1894 on ‘The work of Hertz and his successors’ Hertzian oscillator, 1894 Radio Communication 1894
NT46 or NT57 silica triode valve from the early ground radar transmitter type TF3 Radio Communication 1936
Igranic ‘Pentrovol’ transverse current microphone, serial number 478, patent number 301441, mounted on stand, made by the Igranic Electric Company Limited, England, 1920-1932. From amateur wireless transmitting and receiving station (G5FK), built by F. Briggs Esq., as exhibited at the Radio Exhibition of 1932. Igranic 'Pentrovol' microphone with stand, 1920-1932 Radio Communication 1920-1932
Connector, 6 point, for use with Wireless Set No. 19, unknown maker, British, 1942-1946 Connector for radio equipment, 1942-1946 Radio Communication 1942-1946
Aerial for "S-phone" type 13/Mk IV personal portable UHF transmitter/receiver, designed by Charles Bovill, unknown maker, British, 1942-1945 Aerial for 'S-phone' transceiver, 1942-1945 Radio Communication 1942-1945
Experimental Lodge-Muirhead wireless telegraph receiver, designed and built by Robert Pickersgill Howgrave-Graham, British, about 1905. Experimental Lodge-Muirhead wireless telegraph receiver, 1900-1910 Radio Communication 1900-1910
Radio receiver made for Brighton Borough Police, Wireless Telephone Company Limited, 1933-1939. Bakelite-case single-valve receiver marked 'no. 18' radio receiver made for Brighton Borough Police, 1933-1939 Radio Communication 1933-1939
Small fitted wooden box with space for three components (one only present) from commercial model of a wheel or steel-disc coherer (thin-film detector), Muirhead and Company, Beckenham, London, England, 1902. For use by the Lodge-Muirhead Wireless and General Telegraphy Syndicate Ltd. Wooden box from wheel or steel-disc coherer (thin-film detector), 1902 Radio Communication 1902
Barlow Wadley portable broadcast/communications receiver Type XCR-30 MKII. Serial No. 4323 Radio Communication
Micro Perophone radiogramophone, 1932, restored 1968. 5-valve receiver with 10 inch 78 rpm turntable mounted vertically where speaker would normally be; hinges down for use. Basically a Regentone RG670 radio with Simpson's direct-drive synchronous turntable added Micro Perophone radiogramophone, 1932. Radio Communication 1932
Loewe type 3NF multiple valve complete with socket and base Loewe type 3NF multiple valve Radio Communication
Large main jigger (oscillation transformer) in wood case (No. 72260), made by Marconi's Wireless Telegraph Company Limited, Chelmsford, Essex, England, 1900-1950 Main jigger (oscillation transformer), 1900-1950 Radio Communication 1900-1950
Radio equipment comprising:- one-valve, home-constructed self-excited transmitter, made by Alan T Lee, founding member of the Derby Wireless Club, Derby, Derbyshire, England, 1922-1923 Radio equipment comprising:- one-valve Radio Communication 1922-1923
Mullard Raleigh P.M. broadcast receiver, made by P.F.W. Bush and various makers, England, 1927. Mullard Raleigh P.M. broadcast receiver, 1927 Radio Communication 1927
Circular metal component associated with the "Cintel" twin-lens flying-spot telecine Radio Communication 1957
NT46 or NT57 silica triode valve from the early ground radar transmitter type TF3, 1936 Radio Communication 1936
STC 4212 E triode valve from Daventry short-wave transmitter, made by Standard Telephones and Cables Limited, England, 1925-1970 STC 4212 E triode valve from Daventry short-wave transmitter Radio Communication 1925-1970
NT46 or NT57 silica triode valve from the early ground radar transmitter type TF3, 1936 Radio Communication 1936
Modulator and sub-modulator enclosure from Daventry short-wave transmitter, probably made by the British Broadcasting Corporation, British, 1925 Modulator and sub-modulator enclosure from Daventry short-wave transmitter Radio Communication 1925
Control Unit Mk II for use with Wireless Set No. 19, unknown maker, British, 1942-1946 Control Unit MK II, 1942-1946 Radio Communication 1942-1946
