 |
| Identical to |
E409
= REN1104
= E430
= YN4
= 4635
= RS4309
|
| Similar
Tubes |
S4_Fotos (can normally be replaced - small diff'ce)
S410_Fotos (can normally be replaced - small diff'ce)
VT141_Tekade (can normally be replaced - small diff'ce)
E409N (can normally be replaced - small diff'ce)
4A120 (can normally be replaced - small diff'ce)
NE4 (can normally be replaced - small diff'ce)
WG44 (can normally be replaced - small diff'ce)
|
| First Series |
1928 Tube leaflet collection E.Erb Analysis by original leaflets |
| First Source
(s) |
Oct.1929 : -- Original-techn. papers.
|
| Successor Tubes |
E409N
|
|
| Base |
Europe 5-Pin (O5A, B5) (Codex=F)
|
| Was used by |
Radio/TV-reception etc. |
| Filament |
-: Indirect /
If: 1 Ampere /
Vf 4 Volts /
|
| Literature |
Taschenbuch zum Röhren-Codex 1948/49
|
|
|
| |
|
| |
ficha de valvulas
Getulio Jimenez-Gomez
|
|
|
|
CA
Christian ADAM
|
|
Funke, W18 Karte
Wolfgang Eckardt
|
|
g.h.
Gerhard Heigl
|
|
|
