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ID = 25320
Brand: Common type Japan tube/semicond.
Tube type:  Pentagrid-Converter (Heptode)   Pentagrid (new) 
Identical to 6W-C5 = 6WC5
Similar Tubes
Other base and data slightly different:
Predecessor Tubes 6A7  
Successor Tubes 1946   6BE6   6SA7GT  

Base 7-Pin-Base U7A = small, old, USA
Was used by Radio/TV-reception etc.
Filament Vf 6.3 Volts / If 0.35 Ampere / Indirect / Parallel, (AC/DC defined voltage)

The note “base B7G” in Babani Book 3 is wrong !

Text in other languages (may differ)
Information source -- Collector info (Sammler)   Book 3 / p.27
Babani, International Radio Tube Encyclopaedia   
  6W-C5: Typische Schaltundsschema 6W-C5
Anonymous 1038 Collector
6W-C5: KoBi
Konrad Birkner † 12.08.2014

6W-C5: 7 Stift Sockel U7A (wie 6A7)
Anonymous 1038 Collector

6W-C5: Technische Daten des 6W-C5
Anonymous 1038 Collector

from Just Qvigstad

Usage in Models 1= 1948 ; 2= 1949 ; 1= 1950 ; 1= 1952?? ; 2= 1952? ; 3= 1952 ; 1= 1953?? ; 3= 1953 ; 1= 1955??

Quantity of Models at with this tube (valve, valves, valvola, valvole, válvula, lampe):15

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