Antique radios, Old Time Radios
38111
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Country:
United States of America (USA)
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| Identical to |
38111
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| Similar
Tubes |
Normally replaceable-slightly different:
38111A
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| Predecessor Tubes |
211
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Successor Tubes
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38111A
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| Base |
Jumbo 4-pin bayonet (1918)
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| Was used by |
Transmittertube (Radio) |
| Filament |
Vf 10 Volts / If 3.4 Ampere / Direct / Specified voltage AC/DC |
| Description |
Transmitting triode. Low-capacitance version of 211. For Xtal controlled oscillators.
As well sold as CF38111 (“CF” is the prefix for De Forest). CF38111 are “late” (ca. 1930-1932) type 211 tubes made for the US Navy.
[Info from Jim Cross, 07. Sept. 2022]
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| Information source |
Tube Lore (I)
Tube Lore (II) p. 182
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38111: Manufacturer's Literature
Emilio Ciardiello
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Just Qvigstad
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