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T2742e

Information - Help 
ID = 12258
       
Country:
Germany
Brand: Osram GmbH KG; Berlin
Tube type:  Voltage Regulator, single 
Identical to T2742e

Base Edison medium E14 = 14 mm, mignon (Codex=Edison 14 mm)
Filament No heater
Tube prices 1 Tube prices (visible for members only)
Literature Taschenbuch zum Röhren-Codex 1948/49   
 
t413aw_01_t2742.jpg
T2742e: Own collection
Valery Gromov

 

Usage in Models 1= 1940?? ; 1= 1948?

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):2


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