| Identical to |
E438
= REN1004
= 5-438
= RS4230
= RS4238
|
| Similar
Tubes |
J4078 (can normally be replaced - small diff'ce)
AR4100 (can normally be replaced - small diff'ce)
DW4023 (can normally be replaced - small diff'ce)
DW3559 (can normally be replaced - small diff'ce)
S440N (can normally be replaced - small diff'ce)
REN1004 (can normally be replaced - small diff'ce)
B2038 (Heater different)
107 (can normally be replaced - small diff'ce)
TE38 (can normally be replaced - small diff'ce)
WG43 (can normally be replaced - small diff'ce)
484V (can normally be replaced - small diff'ce)
W415N (can normally be replaced - small diff'ce)
WN4 (can normally be replaced - small diff'ce)
NW4 (can normally be replaced - small diff'ce)
E438N (can normally be replaced - small diff'ce)
|
| First Series |
1928 Tube leaflet collection E.Erb Analysis by original leaflets |
| First Source
(s) |
Jul.1929 : -- Original-techn. papers.
|
|
| Base |
Europe 5-Pin (O5A, B5) (Codex=F)
|
| Was used by |
Radio/TV-reception etc. |
| Filament |
-: Indirect /
-: Parallel, (AC/DC) /
If: 1 Ampere /
Vf 4 Volts /
|
| Tube prices |
1 Tube prices (visible for members
only)
|
| Literature |
Taschenbuch zum Röhren-Codex 1948/49
|
|
