Antique radios, Old Time Radios
E657
|
|
|
|
|
| Tube type: |
Triode-Hexode Frequency converter |
|
| Identical to |
E657
|
| Similar
Tubes |
Other characteristic (electr. data):
X41
|
| Base |
British-7-Pin, old (M7A)
Top contact with a cap.
|
| Was used by |
Prototype only, no series built |
| Filament |
Vf 4 Volts / If 1.2 Ampere / Indirect |
| Description |
Experimental X41 with G3 modified to work at lower oscillating volts. (Grid 1 from top cap). Developed at the Hirst Research Centre oof GEC.
|
| Information source |
-- Collector info (Sammler) Undated list of experimental MOV tubes.
|
|
E657: Fin Stewart
Fin Stewart
|
Just Qvigstad
|
|
|
|
|
|
You reach this tube or valve page from a search
after clicking the "tubes" tab or by clicking a tube
on a radio model page. You will find thousands
of tubes or valves with interesting links. You
even can look up radio models with a certain tube
line up.
[rmxtube-en]
| Data Compliance |
More Information |
|
|
|
