Igranic 'Pentrovol' microphone with stand, 1920-1932

Made:
1920-1932 in England

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’ transverse current microphone, serial number 478, patent number 301441, mounted on stand, made by 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.

This is an example of the type of equipment that would have been used by early amateur radio enthusiasts. Early radio receivers were often made by the radio amateurs themselves. Amateurs often transmitted speech or played records, as well as receiving transmissions from other experimenters. This radio receiver was built by F Briggs, and included a custom built desk to mount all the equipment on. It was displayed at the London Radio Exhibition at Olympia in 1932.

On display

Science Museum: Information Age Gallery: Broadcast

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Details

Category:
Radio Communication
Object Number:
1933-353/2
Materials:
metal (unknown), plastic (unidentified)
type:
microphone
taxonomy:
  • furnishing and equipment
  • tools & equipment
  • audio equipment
credit:
Kindly lent by IPC Media Limited

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