Please click your language flag. Bitte Sprachflagge klicken.


Information - Help 
ID = 28487
United States of America (USA)
Brand: Marconi Wireless Telegraph Co. of America
Tube type:  Triode, vacuum   Audio Frequency 
Identical to D_Marconi
First year 1915 ?? Saga of the Vacuumtube, Tyne Seite 115

Base Edison (candelabra) 12 mm
Was used by Military and/or Government
Filament Direct / Series, DC
Description Spherical valve made by American Marconi late in 1915. Identical in appearance to de Forest double wing Audion. Anode and grid connections from "flying leads" 
Dimensions (WHD)
incl. pins / tip
x x 54 mm / x x 2.13 inch
Literature Saga of the Vacuumtube, Tyne   Page125
D_Marconi: Page 125 Tyne's "Saga of the vacuum Tube"
Fin Stewart

D_Marconi: Page 125 Tyne's "Saga of the Vacuum Tube"
Fin Stewart

You reach this tube or valve page from a search after clicking the "tubes" tab or by clicking a tube on a radio model page. You will find thousands of tubes or valves with interesting links. You even can look up radio models with a certain tube line up. [rmxtube-en]