Antique radios, Old Time Radios
846
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Country:
United States of America (USA)
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| Identical to |
846
= FP-70
= F346A
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| Similar
Tubes |
Normally replaceable-slightly different:
38146
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| Base |
TRANSMITTING & Power-TUBES/VALVES in gen
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| Was used by |
Transmittertube (Radio) |
| Filament |
Vf 11 Volts / If 51 Ampere / Direct |
| Description |
The number was assigned in August 1932. Cooled via external water jacket. Filament from flying leads and grid from side connection.
Amperex, GE, Machlett, RCA, Sylvania, UE, Westinghouse known sources.
Four used in the WWII BC-340 amplifier. Also used in the BC-339 transmitter. In 1935 Lindenblad of RCA Communication reported the use of a couple of them, arranged in a Barkhausen push-pull tripler, to generate 115 watts at 411 MHz.
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| Information source |
Tube Lore (II) p. 78 & 182
Tube Lore (I)
Babani, International Radio Tube Encyclopaedia
Taschenbuch zum Röhren-Codex 1951
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Collection of
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