Antique radios, Old Time Radios
D4
|
Country:
Great Britain (UK)
|
|
Brand:
|
Ferranti, GB |
| Tube type: |
Triode, vacuum Audio Frequency |
|
| Identical to |
D4
= REN904
|
| Similar
Tubes |
Normally replaceable-slightly different:
4GPAC
; A30D
; ACHL
; CV1037
; HLA2
; MH4
Heater different:
354V
|
| First Source
(s) |
1933 : History of the British Radio Valve to 1940 p. 178
|
| Base |
Europe 5-Pin , B5 (Eu O, F, O5A) 1928 (Codex=Eu)
|
| Was used by |
Radio/TV-reception etc. |
| Filament |
Vf 4 Volts / If 1 Ampere / Indirect / Specified voltage AC/DC |
| Description |
Typ:- Va 200; Ia 4mA; Vg -3.0; Ra 12,500; gm 3.3 mA/V
Known brands are Ferranti and Cossor.
|
| Information source |
History of the British Radio Valve to 1940 p. 146 & 178
- - Manufacturers Literature
Babani, International Radio Tube Encyclopaedia
Taschenbuch zum Röhren-Codex 1948/49
|
D4: Ferranti Valves, List Wb. 560
Achim Dassow
|
D4: Telefunken Werkstattbuch
Wolfgang Bauer
More ...
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Just Qvigstad
|
D4: Ferranti Valves List Wb. 560
Achim Dassow
More ...
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Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):4
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