Antique radios, Old Time Radios
858
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Country:
United States of America (USA)
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| Identical to |
858
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| Similar
Tubes |
Normally replaceable-slightly different:
38158
; CG-3717
; FT-6
Different maximum ratings:
858A
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| Base |
TRANSMITTING & Power-TUBES/VALVES in gen
Sidecontact.
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| Was used by |
Transmittertube (Radio) |
| Filament |
Vf 22 Volts / If 52 Ampere / Direct / Specified voltage AC/DC |
| Description |
Work started on development of this tube at the GE laboratories in October 1927and the type number was assigned to it the same year. It was available in March 1929. External anode, water cooled triode for transmitting and industrial applications. 20KW anode power dissipation. Pure tungsten direct heated cathode. Also made in Italy by Fivre.
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| Weight |
3700 g / 130.51 oz |
| Information source |
Tube Lore (II) p. 79 & 182
Tube Lore (I)
- - Manufacturers Literature
Taschenbuch zum Röhren-Codex 1948/49
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858: Manufacturer's Literature
Emilio Ciardiello
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