Antique radios, Old Time Radios
4C21
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Country:
United States of America (USA)
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| Identical to |
4C21
= CV2576
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| Similar
Tubes |
Normally replaceable-slightly different:
211-Spl
; 342B
; E403
; FP124
; GL285
; VT-4C
Other class quality (otherwise equal):
211
|
| Base |
Jumbo 4-pin bayonet (1918)
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| Was used by |
Transmittertube (Radio) |
| Filament |
Vf 10 Volts / If 3.4 Ampere / Direct |
| Description |
211 transmitting triode with low grid current limit.
Jumbo 4-pin base.
|
Dimensions (WHD)
incl. pins / tip |
x 200 x 58 mm / x 7.87 x 2.28 inch |
| Information source |
Tube Lore (I)
Tube Lore (II) p. 86
Babani, International Radio Tube Encyclopaedia
Universal Vade-Mecum, Electron Valves and Semiconductor Devices
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4C21: Manufacturer's Literature
Emilio Ciardiello
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Just Qvigstad
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