Catalogue Marconi Wireless Telegraph Co. Ltd, about 1910. The Fleming valves were made by the Edison and Swan United Electric Light Co. and marketed by Marconi Wireless telegraph Co. Ltd. This tube has a tungsten filament.
Literatur
British Radio Valves - The Vintage Years: 1904-1925 Pages 7-16
- - Manufacturers Literature 1910 catalogue, page 44
Saga of the Vacuum Tube, Tyne
Fleming_132R
Peter den Boer † 2025
Just Qvigstad
Fleming_132R: own collection
Peter den Boer † 2025
