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ID = 42689
Brand: Inter und Union, Deutschland = Röhrenmarken
Tube type:  Triode-Hexode   Frequency converter 
Identical to ECH11E
Similar Tubes
Other characteristic (electr. data):

Base German Steel Y8A, 1938
Filament Vf 6.3 Volts / Indirect / Specified voltage AC/DC
Description Commercially made replacement for the ECH11 made by variuos tube retailers.
It employs an ECH42 or an ECH81 with an adaptor to the Y8A base. 
Information source -- Collector info (Sammler)   

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