 |
| Identical to |
EF22
= W143
= CV303
|
| Similar
Tubes |
EF9 (other base)
EF41 (other base)
EF21_9pin (other base)
|
| First Series |
Feb.1941 Tube leaflet collection E.Erb Philips Book III [178] |
| First Source
(s) |
Feb.1941 : Daten und Schaltungen moderner ... Röhren; Philips # 3
Jul.1941 : Radio-Mentor # 7
|
| Predecessor Tubes |
EF9
EF21_9pin
|
| Successor Tubes |
1947
EF41
|
|
| Base |
Loctal-8, B8G (Sylvania, 1938) (Codex=Waa)
|
| Was used by |
Radio/TV-reception etc. |
| Filament |
-: Indirect /
-: Parallel / series AC/DC /
If: 0.2 Ampere /
Vf 6.3 Volts /
|
| Tube prices |
2 Tube prices (visible for members
only)
|
| Literature |
Taschenbuch zum Röhren-Codex 1948/49
|
|
|
| |
|
| |
Courtesy Bureau Belper (De Muiderkring, Bussum), Scan Frank Philipse
Karel De Reus
|
|
 |
|
M.N.
Anonymous 124 Collector
|
| Variants |
|
RVF-Röhrenbuch-M1,1947
Anonymous 15 Collector
|
|
RVF-Röhrenbuch-M1,1947
Anonymous 15 Collector
|
|
 |