Antique radios, Old Time Radios
S4020A
| Base |
UX-Base (4 Pins (2 thick, USA 1924, UX)
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| Was used by |
Telephony |
| Filament |
Vf 2 Volts / If 0.25 Ampere / Direct / Battery = |
| Description |
Telephone repeater tube. Refer Museum ID 16379 - S4021A fitted with UX 4 pin base. Manufacturers literature states base for this tube is "Med. 4 pin" but does not say which style (UX or UY).
|
Dimensions (WHD)
incl. pins / tip |
x 116 x 57 mm / x 4.57 x 2.24 inch |
| Weight |
65 g / 2.29 oz |
| Information source |
Babani, International Radio Tube Encyclopaedia
- - Manufacturers Literature Sept 1950
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S4020A: Fin Stewart
Fin Stewart
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Just Qvigstad
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