 |
| Identical to |
B425
= W410
|
| Similar
Tubes |
410W (can normally be replaced - small diff'ce)
|
| First Source
(s) |
Apr.1930 : Philips Bulletin
|
|
| Base |
Europe 4-Pin (A, 4A, B4, since 1914) (Codex=Eo)
|
| Was used by |
Radio/TV-reception etc. |
| Filament |
-: Direct /
-: Battery = /
If: 0.1 Ampere /
Vf 4 Volts /
|
| Literature |
Taschenbuch zum Röhren-Codex 1948/49
|
|
|
|
|
|
RVF-Röhrenbuch-M1,1947
Anonymous 15 Collector
|
|
RVF-Röhrenbuch-M1,1947
Anonymous 15 Collector
|
|
|
