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ID = 3523
Tube type:  Triode, vacuum   Universal 
Identical to Triode

Filament Direct / Battery =
Description We have this "summary of early triodes" to be able to use this "Tube" as a filler where we don't know the type of early, directly heated triode, which can use a Tungsten heater (Wolfram) or a dull emitter. See also Tetrode. 
Text in other languages (may differ)

Usage in Models 6= 1924? ; 8= 1925 ; 1= 1926 ; 1= 1927? ; 4= 1930

Quantity of Models at with this tube (valve, valves, valvola, valvole, válvula, lampe):20

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]

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