Antique radios, Old Time Radios
E507
|
Country:
Great Britain (UK)
|
|
| Identical to |
E507
|
| Similar
Tubes |
Normally replaceable-slightly different:
E444
; HL2
|
| Base |
Europe 4-Pin B4 + side contact
|
| Was used by |
Prototype only, no series built |
| Filament |
Vf 1 Volts / If 0.1 Ampere / Direct |
| Description |
Experimental HL2. 1 volt valve; M = 50 as E444. Developed at the Hirst Research Centre of GEC.
|
| Information source |
-- Collector info (Sammler) Undated list of experimental MOV tubes.
|
|
E507: Fin Stewart
Fin Stewart
|
Just Qvigstad
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