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ID = 18984
Brand: Telefunken Deutschland (TFK), (Gesellschaft für drahtlose Telegraphie Telefunken mbH
Tube type:  Electrometer, Space Charge Grid 
Identical to T113
Similar Tubes
Other shape (e.g. bulb type):
First Source (s)
22.Oct.1939 : Funkschau 1939 #41

Base Europe 4-Pin B4 (Eu A, E, 4A) 1914 Top contact screw type.
Filament Vf 3 Volts / If 0.1 Ampere / Direct / Battery =
Description Electrometer tetrode with space charge grid for high impedance measurements. 
Text in other languages (may differ)
Dimensions (WHD)
incl. pins / tip
32 x 123 x mm / 1.26 x 4.84 x inch
Tube prices 3 Tube prices (visible for members only)
  T113: Röhren-Handbuch Ludwig Ratheiser
Heinz Höger
T113: Bild aus eigener Sammlung F.S.
Felix Schaffhauser

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T113: RTT Franzis-Verlag
Wolfgang Holtmann

T113: Telefunken Taschenbuch 1971
Anonymous 15 Collector

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from Just Qvigstad

Usage in Models 8= 1940?? ; 1= 1941?

Quantity of Models at with this tube (valve, valves, valvola, valvole, válvula, lampe):9

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