56
- First year: 1932
- Base: UY-Base, 5 Pins (USA, April 1927) (Codex=H)
- Filament: Vf 2.5 Volts / If 1 Ampere / Indirect / Parallel, (AC/DC) /
- Identical to: 56 = C-56 = 256 = PH256 = A256 = G-56 = ER56 = VT-56 = PH56
- Tube type: Triode, vacuum Universal
Published by:
dido