Antique radios, Old Time Radios
D4
| Country: |
Great Britain (UK) |
|
Brand: |
Ferranti, GB |
| |
Tube type: |
Triode, vacuum |
|
Tube ID = 12639 |
 |
| Identical to |
D4 = REN904
|
| Similar
Tubes |
Normally replaceable-slightly different:
4GPAC; A30D; ACHL; HLA2; MH4
Heater different:
354V
|
|
| Base |
Europe 5-Pin (O5A, B5) (Codex=Eu)
|
| Filament |
Vf 4 Volts / If: 1 Ampere / -: Indirect / -: Parallel, (AC/DC) / |
| Description |
Typ:- Va 200; Ia 4mA; Vg -3.0; Ra 12,500; gm 3.3 mA/V
|
| Literature |
Taschenbuch zum Röhren-Codex 1948/49
- - Manufacturers Literature
|
|
|
|
|
|
|
|
D4: Telefunken Werkstattbuch
Wolfgang Bauer
|
| |
|
| Usage in Models |
1= 1932 ; 2= 1933 ; 1= 1935 |
| Number of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe): 4 |
|
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