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Coil - AWA, High Frequency Inductance, 1914-1920 Object Reg. No: ST 021413

Summary:
Coil used to fine tune the primary oscillatory circuit of a spark transmitter. It was also referred to as a strip jigger in the early days of radio.
Description:
Open spiral wound copper strip on a varnished wooden board. There are two terminals, one connected to outer end of the spiral. The other terminal would have a lead terminated by a clip, which is placed on the spiral in a position to tune the aerial; the lead and clip are missing.
Acquisition Information:
Donation from Amalgamated Wireless (Australasia) Ltd., 1940
Discipline: Technology
Dimensions: 70 mm (Height), 300 mm (Width), 300 mm (Length)

More information

Tagged with: radios, electrical components, induction coils
Themes this item is part of: Information & Communication Collection, Radio from sparks to valves, 1914 - 1920
Primary Classification: COMMUNICATIONS
Secondary Classification: Radio
Tertiary Classification: transmitters
Inscriptions: Base: AMALGAMATED WIRELESS / (A-SIA) LTD / No 97-3180 SYDNEY. N.S.W. / AUSTRALIAN MANUFACTURE
Manufacturer: Amalgamated Wireless (Australasia) Ltd., Sydney, New South Wales, Australia, 1914-1920
Bibliography:
  1. [Book], Mr H. Dowsett - Institute of Electrical Engineers, Mr J. Hawkhead, Handbook of Technical Instruction for Wireless Telegraphists, The Wireless Press Ltd., 1915, 1915, 236 Pages

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