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Coherer - Gesellschaft für drahtlose Telegraphie System Telefunken, Radio, circa 1905 Object Reg. No: ST 15415

Coherer: Telefunken type, made by Gesellschaft Fur Drahltose Telegraphie in Germany circa 1905. Used by donor about 1905-06. Not the first commercial form.
Consists of evacuated tube with electrodes, possibly aluminium and silver, with gold filings between. End caps of metal. Glass pinch off.

Multiple registration numbers physically joined. This object is physically attached to a display board with ST 21766.
Acquisition Information:
Donation from Amalgamated Wireless (Australasia) Ltd, 1924
Discipline: Technology
Dimensions: 80 mm (Length), 10 mm (Diameter)

More information

Tagged with: radios, electrical components
Themes this item is part of: Information & Communication Collection, Early radio: transmission and reception, 1900 - 1914
Primary Classification: COMMUNICATIONS
Secondary Classification: Radio
Tertiary Classification: receivers
Inscriptions: None
Manufacturer: Gesellshaft fur Drahltose Telegraphie, Germany, circa 1905
References: Wiki: Telefunken: accessed 21 September 2012:

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