227
- First year: 1927
- Base: UY-Base, 5 Pins (USA, April 1927)
- Filament: Vf 2.5 Volts / If 1.75 Ampere / Indirect / Parallel, (AC/DC) /
- Identical to: 227 = 27 = DE-1 = G-27 = 127 = UY227 = ER227 = P227_USA = SY227 = NY227 = MY227 = AC227 = Y227
- Tube type: Triode, vacuum Universal
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dido