506
- First year: 1927
- Base: Europe 4-Pin (A, 4A, B4, since 1914) (Codex=Eo)
- Filament: Vf 4 Volts / If 1 Ampere / Direct /
- Identical to: 506 = RGN1054 = TV80 = G470 = PV495 = DW2X = U10 = W6 = RE4100 = V2 = D3-50B = 1823 = 4619 = DE2 = G490 = R4100 = NVD3
- Tube type: Full-Wave Vacuum Rectifier Power-supply
Published by:
dido