 |
| Identical to |
CK3
|
| Similar
Tubes |
EK3 (Heater different)
|
| First Series |
Apr.1938 Tube leaflet collection E.Erb Analysis by original leaflets |
| First Source
(s) |
Apr.1938 : Daten und Schaltungen moderner ... Röhren; Philips # 2
|
| Predecessor Tubes |
CK1
EK2
|
| Successor Tubes |
1940
UCH4
UCH21
|
|
| Base |
Europe side contact base P (P8A) (Codex=Seo)
Top contact with a cap
|
| Was used by |
Radio/TV-reception etc. |
| Filament |
-: Indirect /
-: Series, AC/DC /
If: 0.2 Ampere /
Vf 19 Volts /
|
| Literature |
Taschenbuch zum Röhren-Codex 1948/49
|
|
|
| |
|
| |
Courtesy Bureau Belper (De Muiderkring, Bussum), Scan Frank Philipse
Karel De Reus
|
|
|
|
Collection TL
Thomas Lebeth
|
|
Telefunken Werkstattbuch
Wolfgang Bauer
|
|
RVF-Röhrenbuch-M1,1947
Anonymous 15 Collector
|
|
|
