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MT4

Information - Help 
ID = 19699
       
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 MT4 = CV1610 = VT10_GPO
First year Jun.1919 ?? British Radio Valves - The Vintage Years, Thrower page 129 but Ediswan before

Base Wires Wires only
Was used by Transmittertube (Radio)
Filament Vf 12.5 Volts / If 6.3 Ampere / Direct / Parallel, (AC/DC)
Description

Ediswan is probably producing, but unconfirmed, until 1919 when production went to Marconi Osram. 200 watt transmitting tube with anode voltage of 10,000.

 
Text in other languages (may differ)
Literature British Radio Valves - The Vintage Years, Thrower   Pages 69, 83 and 133
 
marconi_mt4.jpg
MT4: Aus eigenen Unterlagen
Rudolf Osterkamp

 
mt4_mov_spec.png
MT4: Banneitz, TB der drahtl. Teleph. 1927
Anonymous 15 Collector


Usage in Models 1= 1920??

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):1

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