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ECH34               Tube type:  Triode-Heptode   Frequency converter  Tube ID = 20974 previous  |  next Identical to ECH34 = ECH4G Similar Tubes Other shape (e.g. bulb type):  ECH4A Different connections:  ECH4K Other base:  ECH21; ECH4 Base Octal (Int.Octal, IO) K8A, USA 1935 Top contact with a cap Filament Vf 6.3 Volts / If: 0.35 Ampere / -: Indirect / -: Parallel, (AC/DC) /

schematic diagram Jacob Roschy

Usage in Models (calculation each 25th of the month)   1= 1948?? ; 1= 1948 ; 1= 1950?? ; Number of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):   3

No further Information for ECH34

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