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ID = 4661
Tube type:  Double Triode 
Identical to 6BK7B = 7028
Similar Tubes
Heater different:
Predecessor Tubes 6BK7A  

Base Noval, B9A
Filament Vf 6.3 Volts / If 0.45 Ampere / Indirect / Parallel, (AC/DC) /
Tube prices 0 Tube prices (visible for members only)
Literature Essential Characteristics, GE 1973   

6BK7B: E.K.
Anonymous 225 Collector

6BK7B: RTT Schwandt
Günther Stabe

6BK7B: RCA Tube Manual
Peter Hoddow

Usage in Models 3= 1956? ; 12= 1958 ; 43= 1959? ; 5= 1959 ; 2= 1960??

Quantity of Models at with this tube (valve, valves, valvola, valvole, válvula, lampe):65

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