 |
| Identical to |
4673
|
| Similar
Tubes |
4679 (Heater different)
|
| First Source
(s) |
Mar.1936 : Histoire de la lampe de radio
|
| Successor Tubes |
1939
EF50
|
|
| Base |
Europe side contact base P (P8A) (Codex=Sf)
Top contact with a cap
|
| Was used by |
Technology / Measurement |
| Filament |
-: Indirect /
If: 1.3 Ampere /
Vf 4 Volts /
|
| Tube prices |
1 Tube prices (visible for members
only)
|
| Literature |
Taschenbuch zum Röhren-Codex 1948/49
|
|
|
| |
|
| |
Internet
Miguel Angel Trujillo-Rodriguez
|
|
|
|
wh
Walter Heinlin
|
|
RTT 1974 (Franzis) 13. Auflage
Martin Renz
|
|
Philips Liste, 1938-39
Anonymous 15 Collector
|
|
|
