Antique radios, Old Time Radios
4020B
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Country:
Great Britain (UK)
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| Identical to |
4020B
= 3A/108B
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| Base |
Europe 4-Pin B4 (Eu A, E, 4A) 1914
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| Was used by |
Telephony |
| Filament |
Vf 2 Volts / If 0.25 Ampere / Direct |
| Description |
Telephone repeater tube designed for DC series or parallel operation
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Dimensions (WHD)
incl. pins / tip |
57 x 116 x mm / 2.24 x 4.57 x inch |
| Weight |
65 g / 2.29 oz |
| Information source |
- - Manufacturers Literature
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4020B: Fin Stewart
Fin Stewart
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Just Qvigstad
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