Antique radios, Old Time Radios
412BU
|
Country:
Great Britain (UK)
|
|
| Identical to |
412BU
|
| Similar
Tubes |
Normally replaceable-slightly different:
506
; RGN1054
|
| First Source
(s) |
1929 : History of the British Radio Valve to 1940 p.168
|
| Base |
Europe 4-Pin B4 (Eu A, E, 4A) 1914 (Codex=Eo)
|
| Was used by |
Radio/TV-reception etc. |
| Filament |
Vf 4 Volts / If 1 Ampere / Direct / Parallel, (AC/DC) |
| Description |
Va max 2x250V, Ia max 70 mA.
|
| Information source |
Taschenbuch zum Röhren-Codex 1948/49
|
|
|
 |
|
412BU: D.Z.
Dieter Zwingel
|
| |
|
412BU: Fin Stewart
Fin Stewart
|
| |
from Just Qvigstad
|
|
Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):1
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