Antique radios, Old Time Radios
864
| Base |
UX-Base (4 Pins (2 thick, USA 1924, UX) (Codex=Bo)
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| Was used by |
Radio/TV-reception etc. |
| Filament |
Vf 1.1 Volts / If 0.25 Ampere / Direct / Specified voltage AC/DC |
| Description |
Low-microphonic rebased and improved WD11; mu 8.2, Gm 0.65mS.
Sturdy non-microphonic tube for aircraft communication. Airplane vibrations caused noise in the receiver using normal tubes. Three of these tubes used in the RCA 4088 condenser microphone. It was classified for industrial use but was released for general distribution in April 1932.
|
Dimensions (WHD)
incl. pins / tip |
x 93 x 30 mm / x 3.66 x 1.18 inch |
| Weight |
32 g / 1.13 oz |
| Tube prices |
3 Tube prices (visible for members
only)
|
| Information source |
Tube Lore (II) p. 79
Tube Lore (I)
Babani, International Radio Tube Encyclopaedia
Taschenbuch zum Röhren-Codex 1948/49
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864: Telefunken Werkstattbuch
Wolfgang Bauer
More ...
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Just Qvigstad
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864: RCA
Anonymous 56 Collector
More ...
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Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):5
Collection of
Collection of a member from D |
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