Antique radios, Old Time Radios
4021B
|
Country:
Great Britain (UK)
|
|
| Identical to |
4021B
|
| Similar
Tubes |
Other class quality (otherwise equal):
CV1316
Other base:
S4021A
|
| Base |
Europe 4-Pin B4 (Eu A, E, 4A) 1914 (Codex=Eo)
|
| Was used by |
Telephony |
| Filament |
Vf 4 Volts / If 0.25 Ampere / Direct / Specified current DC = (Series working) |
| Description |
Telephone repeater tube. Original design of this tube has a straight sided bulb and the element structure is at 45 degrees to the base. Designed for series or parallel DC use.
|
Dimensions (WHD)
incl. pins / tip |
46 x 120 x 44 mm / 1.81 x 4.72 x 1.73 inch |
| Information source |
Taschenbuch zum Röhren-Codex 1948/49
- - Manufacturers Literature
|
|
4021B: Manufacturer's Literature
Emilio Ciardiello
|
Just Qvigstad
|
|
Collection of
Collection of a member from FIN |
|
|
|
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 |
|
|
|
