• 2B7

  • First year: 1933
  • Base: 7-Pin-Base U7A = small, old, USA (Codex=Mb) Top contact with a cap
  • Filament: Vf 2.5 Volts / If 0.8 Ampere / Indirect / Parallel, (AC/DC) /
  • Identical to: 2B7 = PH2B7 = Ut2B7 = ER2B7 = VT157_GPO = CV1706
  • Tube type: Double Diode-Pentode Universal Controlling (mu)
  • Published by:

    dido