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Information - Help 
ID = 25342
Brand: Dario (Doria), Brand of SFR (Radiotechnique), France
Tube type:  Triode, vacuum   Power/Output 
Identical to R656
First year 1927 Saga of the Vacuumtube, Tyne page 405, 406

Base Europe 4-Pin (A, 4A, B4, since 1914) 2 Sidecontacts
Filament Vf 0.6 Volts / If 1.5 Ampere / Direct / Parallel, (AC/DC) /

audio output tube

Text in other languages (may differ)

R656: Meine Sammlung
Rudolf Osterkamp

R656: La Nature 1930
Mark Hippenstiel

Usage in Models 1= 1928

Quantity of Models at with this tube (valve, valves, valvola, valvole, válvula, lampe):1

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