 |
| Identical to |
W406
= RE034
|
| Similar
Tubes |
W412 (can normally be replaced - small diff'ce)
W420 (can normally be replaced - small diff'ce)
A406 (can normally be replaced - small diff'ce)
|
| First Series |
1927 Tube leaflet collection E.Erb Analysis by original leaflets |
| First Source
(s) |
Sep.1927 : Funk Bastler, Der 1927 Heft 39
|
|
| Base |
Europe 4-Pin (A, 4A, B4, since 1914)
|
| Filament |
-: Direct /
If: 0.06 Ampere /
Vf 4 Volts /
|
| Literature |
Taschenbuch zum Röhren-Codex 1948/49
|
|
|
|
|
|
Röhrensammlung
Wolfgang Bauer
|
|
Telefunken Werkstattbuch
Wolfgang Bauer
|
|
JR
Jacob Roschy
|
|
|
