Antique radios, Old Time Radios
872
| Base |
Jumbo 4-pin bayonet (1918) (Codex=Bz)
Top contact with a cap.
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| Was used by |
Transmittertube (Radio) |
| Filament |
Vf 5 Volts / If 10 Ampere / Direct |
| Description |
T-18 bulb with cap, jumbo 4-pin base. Early version, number assigned in 1929, had simple unshielded elements. 7.5KV PIV, 1.25A average.
|
Dimensions (WHD)
incl. pins / tip |
x 217 x 58 mm / x 8.54 x 2.28 inch |
| Weight |
225 g / 7.94 oz |
| Information source |
Tube Lore (II) p. 80
Tube Lore (I)
Babani, International Radio Tube Encyclopaedia
Taschenbuch zum Röhren-Codex 1948/49
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872
Emilio Ciardiello
More ...
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Just Qvigstad
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872: RCA de forest amateur 1934
Miguel Angel Trujillo-Rodriguez
More ...
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Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):2
Collection of
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