 |
| Identical to |
E499
= W4110
= REN914
= 4657
= WE28
|
| Similar
Tubes |
A4DR (can normally be replaced - small diff'ce)
NR41 (can normally be replaced - small diff'ce)
A440N (can normally be replaced - small diff'ce)
|
| First Series |
1932 ? Tube leaflet collection E.Erb Analysis by original leaflets |
| First Source
(s) |
Apr.1933 : Philips Bulletin
|
|
| Base |
Europe 5-Pin (O5A, B5) (Codex=F)
|
| Was used by |
Radio/TV-reception etc. |
| Filament |
-: Indirect /
If: 1.2 Ampere /
Vf 4 Volts /
|
| Literature |
Taschenbuch zum Röhren-Codex 1948/49
|
|
|
| |
|
| |
ficha de valvulas
Getulio Jimenez-Gomez
|
|
|
|
Collection TL
Thomas Lebeth
|
|
Telefunken Werkstattbuch
Wolfgang Bauer
|
|
RVF-Röhrenbuch-M1,1947
Anonymous 15 Collector
|
|
|
