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840

Information - Help 
ID = 9694
       
Country:
United States of America (USA)
Brand:
Developer: RCA (RCA Victor Co. Inc.); New York (NY) 
Tube type:  Vacuum Pentode   RF/IF-Stage 
Identical to 840

Base UY-Base, 5 Pins (USA, April 1927) (Codex=Hr) Top contact with a cap.
Was used by Radio/TV-reception etc.
Filament Vf 2 Volts / If 0.14 Ampere / Direct / Battery =
Description

This tube was introduced by RCA for use in the RCA Victor beat-frequency audio oscillator. It was not listed for distributor sales and was withdrawn in 1945.

 
Dimensions (WHD)
incl. pins / tip
x 116 x 38 mm / x 4.57 x 1.50 inch
Weight 39 g / 1.38 oz
Information source Tube Lore (II)   p. 78
-- Collector info (Sammler)   
Babani, International Radio Tube Encyclopaedia
Taschenbuch zum Röhren-Codex 1948/49

840_so.png 840: ARRL Handbook 1972
Anonymous 10 Collector


Just Qvigstad
 
adzam_rca_840_jc_e1016.jpg

 

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