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MT3

Information - Help 
ID = 19698
       
Country:
Great Britain (UK)
Brand: Ediswan, Siemens Edison Swan Electric Co.; London
Developer: Marconi's Wireless Telegraph Co. Ltd. 
Tube type:  Transmitting Triode, air cooled 
  <1925 very rare. ***
Identical to MT3
First year Jun.1919 British Radio Valves - The Vintage Years, Thrower page 129 - but before = Ediswan

Base TRANSMITTER-Base in gneral Other combinations of connections
Was used by Transmittertube (Radio)
Filament Vf 6 Volts / If 2.2 Ampere / Direct
Description

Ediswan is probably producing until 1919 when production went to Osram in June 1919. Tube was still listed in the 1932 Marconi Transmitting Valve catalog.

 
Text in other languages (may differ)
Dimensions (WHD)
incl. pins / tip
x 165 x 75 mm / x 6.50 x 2.95 inch
Literature British Radio Valves - The Vintage Years, Thrower   Pages 69, 71 & 127
- - Manufacturers Literature   
 
mt3.jpg
MT3: Fin Stewart collection
Fin Stewart

 
mt3.png
MT3: Fin Stewart
Fin Stewart

 
mt3_mov_spec.png
MT3: Banneitz, TB der drahtl. Teleph. 1927
Anonymous 15 Collector



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