Antique radios, Old Time Radios
852
Base |
UX-Base (4 Pins (2 thick, USA 1924, UX) (Codex=Bt)
Sidecontact and top contact.
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Was used by |
Transmittertube (Radio) |
Filament |
Vf 10 Volts / If 3.2 Ampere / Direct / Specified voltage AC/DC |
Description |
Introduced in 1927, it used a short plate to keep interelectrode capacitances low. Finned plate for power dissipation, thoriated-tungsten filament. Leeds version has a graphite anode
- 3000 V at 85 mA
- 30 MHz full ratings, 120 MHz at reduced ratings
- mu 12
- 100 W plate dissipation.
Also 'A' version.
Amperex, Cunningham, GE, RCA and Westinghouse some of known manufacturers.
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Dimensions (WHD) incl. pins / tip |
135 x 190 x 95 mm / 5.31 x 7.48 x 3.74 inch |
Weight |
175 g / 6.17 oz |
Tube prices |
1 Tube prices (visible for members
only)
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Information source |
Tube Lore (II) p. 79
Babani, International Radio Tube Encyclopaedia p. 182 & 183
Tube Lore (I)
Taschenbuch zum Röhren-Codex 1948/49
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852: ARRL Handbook 1972
Anonymous 10 Collector
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Just Qvigstad
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852: RCA de forest amateur 1934
Miguel Angel Trujillo-Rodriguez
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