| Identical to |
CF7
= 13H1
= TCF7
= UF7
= SP13
= UHP20
|
| Similar
Tubes |
AF7 (Heater different)
EF7 (Heater different)
NF2 (can normally be replaced - small diff'ce)
VF7 (Heater different)
UAH7 (can normally be replaced - small diff'ce)
|
| First Series |
1935 Tube leaflet collection E.Erb Analysis by original leaflets |
| First Source
(s) |
Jul.1935 : Die Sendung 1935 #7
Mar.1935 : Philips Bulletin
|
| Predecessor Tubes |
CF1
RENS1884
|
| Successor Tubes |
1936
EF6
UF6
VF7
|
|
| Base |
Europe side contact base P (P8A) (Codex=Sf)
Top contact with a cap
|
| Was used by |
Radio/TV-reception etc. |
| Filament |
-: Indirect /
-: Parallel / series AC/DC /
If: 0.2 Ampere /
Vf 13 Volts /
|
| Tube prices |
1 Tube prices (visible for members
only)
|
| Literature |
Taschenbuch zum Röhren-Codex 1948/49
|
|
