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Main part of Marconi 1.5KW transmitter from 2LO

Main part of Marconi 1.5KW transmitter from 2LO

1922-1925
Aerial tuning inductor from the Rugby Radio Station, 1943-1966

Aerial tuning inductor from the Rugby Radio Station, 1943-1966

1943-1966
SWB1 transmitter no. 7, 1927

SWB1 transmitter no. 7, 1927

1927
Solid State FM Transmitter

Solid State FM Transmitter

Wireless Radio Field Transmitter Unit

Wireless Radio Field Transmitter Unit

1920-1935
Radio Kit

Radio Kit

1923-1927
Marconi 1.5kW Transmitter used by 2LO

Marconi 1.5kW Transmitter used by 2LO

1922
Pallet of Parts for the Aerial Tuning Inductor from the Rugby Radio Station, 1943-1966

Pallet of Parts for the Aerial Tuning Inductor from the Rugby Radio Station, 1943-1966

1943-1966
Pallet of Parts for the Aerial Tuning Inductor from the Rugby Radio Station, 1943-1966

Pallet of Parts for the Aerial Tuning Inductor from the Rugby Radio Station, 1943-1966

1943-1966
Walkways and Long Beams from the Aerial Tuning Inductor from the Rugby Radio Station, 1943-1966

Walkways and Long Beams from the Aerial Tuning Inductor from the Rugby Radio Station, 1943-1966

1943-1966
Tower for Coarse Tuning Assembly for the Aerial Tuning Inductor from the Rugby Radio Station, 1943-1966

Tower for Coarse Tuning Assembly for the Aerial Tuning Inductor from the Rugby Radio Station, 1943-1966

1943-1966
Tower, Possibly for Fine Tuning Coil for the Aerial Tuning Inductor from the Rugby Radio Station, 1943-1966

Tower, Possibly for Fine Tuning Coil for the Aerial Tuning Inductor from the Rugby Radio Station, 1943-1966

1943-1966
Aerial tuning inductor from the Rugby Radio Station, 1943-1966

Aerial tuning inductor from the Rugby Radio Station, 1943-1966

1943-1966
Additional Cable Lengths for the Aerial Tuning Inductor from the Rugby Radio Station, 1943-1966

Additional Cable Lengths for the Aerial Tuning Inductor from the Rugby Radio Station, 1943-1966

1943-1966
Connector for Additional Cable Lengths for the Aerial Tuning Inductor from the Rugby Radio Station, 1943-1966

Connector for Additional Cable Lengths for the Aerial Tuning Inductor from the Rugby Radio Station, 1943-1966

1943-1966
Coarse Tuning Assembly for the Aerial Tuning Inductor from the Rugby Radio Station, 1943-1966

Coarse Tuning Assembly for the Aerial Tuning Inductor from the Rugby Radio Station, 1943-1966

1943-1966
Staircase for the Aerial Tuning Inductor from the Rugby Radio Station, 1943-1966

Staircase for the Aerial Tuning Inductor from the Rugby Radio Station, 1943-1966

1943-1966
Transformer from the Aerial Tuning Inductor from the Rugby Radio Station, 1943-1966

Transformer from the Aerial Tuning Inductor from the Rugby Radio Station, 1943-1966

1943-1966
Miniature spark transmitter for lifeboat, made by F.L.W. Dean

Miniature spark transmitter for lifeboat, made by F.L.W. Dean

Low-power 'A' unit from 50KW m.f. transmitter

Low-power 'A' unit from 50KW m.f. transmitter

1929
Crystal controlled master oscillator with power amplifier and mains supply equipment, from amateur wireless transmitting and receiving station (G5FK), built by F. Briggs Esq. as exhibited at the Radio Exhibition of 1932.

Crystal controlled master oscillator with power amplifier and mains supply equipment

1920-1932
Low power A unit from 50KW MF Transmitter, made by Marconi's Wireless Telegraphy Company Limited, Chelmsford, Essex, England, 1929. In service at BBC Brookmans Park 1929 - 1979

Low-power 'A' unit from 50KW m.f. transmitter

1929
Part of Marconi 1.5kW transmitter (central rack without choke), made by Marconi's Wireless Telegraphy Company Limited, Chelmsford, Essex, England, 1922-1925. Used by the BBC London station 2LO between 1922 and 1925, as rebuilt c.1954.

Part of Marconi 1.5kW transmitter (central rack without choke) from 2LO, 1922-1925

1922-1925
US Army Signal Corps 500kHz dinghy radio transmitter BC-778-E, serial no. 2439, made by Bendix Aviation, 1944

US Army Signal Corps 500kHz dinghy radio transmitter BC-778-E, 1944

1944
Aircraft radio transmitter, by Harry W. Cox and Company Limited, London, England, 1919. Used in the Vickers Vimy/Rolls-Royce Biplane: the aircraft in which John Alcock (pilot) and Arthur Whitten Brown (navigator) made the first non-stop flight across the Atlantic in June 1919.

Radio transmitter, from Alcock and Brown's Vickers Vimy biplane, 1919

1919
German clandestine miniature hf transmitter, c. 1940 (Aerial-current indicator bulb missing)

German clandestine miniature hf transmitter

Panel comprising nos 2 and 3 magnifiers and master oscillator of short wave beam (SWB1) telegraph transmitter no. 7 (Dorchester) restored to approximate original (1927) configuration in c. 1970, made by Marconi's Wireless Telegraph Company, Chelmsford, Essex, England, 1927

Components of SWB1 transmitter, 1927

1927
Disassembled walkways, smaller parts, of the variable inductance coil for the very-low-frequency (16 kHz) transmitter (callsign GBR) installed at Rugby Radio Station, unknown maker, British, 1943-1966. Constructed in 1943 to the original 1926 design, and as modified in 1966, together with separate transformer and variometer with supporting framework. Two large pallets and associated long pieces of wood. See also 2005-733/18 1. Former or framework - made of wood (Sitka Spruce). 2. Fixings - made of wooden doweling and nylon nuts & bolts. 3. Wedges to keep coil in place - made of wood

Walkways and smaller parts for the aerial tuning inductor from the Rugby Radio Station, 1943-1966

1943-1966
Additional cable lengths of the variable inductance coil for the very-low-frequency (16 kHz) transmitter (callsign GBR) installed at Rugby Radio Station, unknown maker, British, 1943-1966. These would have sat below the main fine tuning coil. Constructed in 1943 to the original 1926 design, and as modified in 1966, together with separate transformer and variometer with supporting framework.

Additional Cable Lengths for the Aerial Tuning Inductor from the Rugby Radio Station, 1943-1966

1943-1966
Cable bolt clamps of the variable inductance coil for the very-low-frequency (16 kHz) transmitter (callsign GBR) installed at Rugby Radio Station, unknown maker, British, 1943-1966. Constructed in 1943 to the original 1926 design, and as modified in 1966, together with separate transformer and variometer with supporting framework.

Cable bolt clamps for the aerial tuning inductor from the Rugby Radio Station, 1943-1966

1943-1966
Five handwheels from the variable inductance coil of the very-low-frequency (16 kHz) transmitter (callsign GBR) installed at Rugby Radio Station, unknown maker, British, 1943-1966. Constructed in 1943 to the original 1926 design, and as modified in 1966, together with separate transformer and variometer with supporting framework.

Five wheels for the aerial tuning inductor from the Rugby Radio Station, 1943-1966

1943-1966
One of two additional cable lengths for spiders 2 and 3 of the variable inductance coil for the very-low-frequency (16 kHz) transmitter (callsign GBR) installed at Rugby Radio Station, unknown maker, British, 1943-1966. Constructed in 1943 to the original 1926 design, and as modified in 1966, together with separate transformer and variometer with supporting framework.

Additional Cable Length for the Aerial Tuning Inductor from the Rugby Radio Station, 1943-1966

1943-1966
Panel comprising no 1 power magnifier of short wave beam (SWB1) telegraph transmitter no. 7 (Dorchester) restored to approximate original (1927) configuration in c. 1970, made by Marconi's Wireless Telegraph Company, Chelmsford, Essex, England, 1927

Main part of SWB1 transmitter, 1927

1927
Unused spares from BT of the variable inductance coil for the very-low-frequency (16 kHz) transmitter (callsign GBR) installed at Rugby Radio Station, unknown maker, British, 1943-1966. Constructed in 1943 to the original 1926 design, and as modified in 1966, together with separate transformer and variometer with supporting framework.

Unused spares for the aerial tuning inductor from the Rugby Radio Station, 1943-1966

1943-1966
Drawings of the variable inductance coil assembly for the very-low-frequency (16 kHz) transmitter (callsign GBR) installed at Rugby Radio Station, unknown maker, British, 1943-1966. Constructed in 1943 to the original 1926 design, and as modified in 1966, together with separate transformer and variometer with supporting framework.

Drawings for the aerial tuning inductor from the Rugby Radio Station, 1943-1966

1943-1966
One of two additional cable lengths for spiders 2 and 3 of the variable inductance coil for the very-low-frequency (16 kHz) transmitter (callsign GBR) installed at Rugby Radio Station, unknown maker, British, 1943-1966. Constructed in 1943 to the original 1926 design, and as modified in 1966, together with separate transformer and variometer with supporting framework.

Additional Cable Length for the Aerial Tuning Inductor from the Rugby Radio Station, 1943-1966

1943-1966
Two trestle beams of the variable inductance coil for the very-low-frequency (16 kHz) transmitter (callsign GBR) installed at Rugby Radio Station, unknown maker, British, 1943-1966. Constructed in 1943 to the original 1926 design, and as modified in 1966, together with separate transformer and variometer with supporting framework.

Two trestle beams for the aerial tuning inductor from the Rugby Radio Station, 1943-1966

1943-1966