 |
| Identical to |
EF7
|
| Similar
Tubes |
AF7 (Heater different)
CF7 (Heater different)
VF7 (Heater different)
|
| First Series |
Jul.1936 Tube leaflet collection E.Erb Analysis by original leaflets |
| First Source
(s) |
Feb.1936 : Funkschau (FS) 1936, Heft 5
Jan.1936 : Funk, Die Zeitschrift des Funkwesens 1936 # 1
|
| Predecessor Tubes |
EF1
|
| Successor Tubes |
EF6
|
|
| Base |
Europe side contact base P (P8A) (Codex=Sf)
|
| Was used by |
Radio/TV-reception etc. |
| Filament |
-: Indirect /
-: Parallel, (AC/DC) /
If: 0.24 Ampere /
Vf 6.3 Volts /
|
| Description |
Nachzügler zur ersten europäischen Serie von
Autoradioröhren. Die EF7 ist im Gegensatz zur EF3
die Linearröhre für die NF-Vorstufe.
Text in other
languages (may
differ)
|
| Literature |
Taschenbuch zum Röhren-Codex 1948/49
|
|
|
|
|
|
JR
Jacob Roschy
|
|
Telefunken Werkstattbuch
Wolfgang Bauer
|
|
RVF-Röhrenbuch-M1,1947
Anonymous 15 Collector
|
|
|
