John Gavey's ring transformer, used between Lavernock and Flatholm, made by John Gavey, Wales, 1892. Mounted on polished wooden board
John Gavey's ring transformer, used between Lavernock and Flatholm, made by John Gavey, Wales, 1892.
William Henry Preece (1834-1913) became Engineer-in-Chief of the Post Office in 1892. At the time he was unconvinced of the theories of Heinrich Hertz as a basis for wireless communication but considered that electromagnetic induction could be used for wireless telegraphy over short distances. John Gavey, his assistant, made this ring transformer for trials held in Wales, between Lavernock and the island of Flat Holm, in 1892. The system worked but was impractical for widescale application.
- Object Number:
- component - object
- Donated by BT Heritage and Archives
Cite this page
We encourage the use and reuse of our collection data.
Data in the title, made, maker and details fields are released under Creative Commons Zero
Descriptions and all other text content are licensed under a Creative Commons Attribution 4.0 licence
Download catalogue entry as json
Download manifest IIIF
Our records are constantly being enhanced and improved, but please note that we cannot guarantee the accuracy of any information shown on this website.