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ID = 71000
United States of America (USA)
Brand: RCA (RCA Victor Co. Inc.); New York (NY)
Developer: General Electric Co. (GE); Bridgeport CT, Syracuse NY 
Tube type:  Triode, vacuum   Power/Output 
  <1925 very rare. ***
Identical to UX859 = 859_no2
Similar Tubes
Normally replaceable-slightly different:
Multiple differences or of other kind:
  199 ; CX299 ; UX199

Base UX-Base (4 Pins (2 thick, USA 1924, UX)
Was used by Radio/TV-reception etc.
Filament Vf 3.3 Volts / If 0.03 Ampere / Direct / Battery =

This tube is a Hi Mu version of the RCA UX199 tube. It was used for microphone amplification, scanning disk television and resistance coupled amplifiers. The glass bulb was a few millimeters bigger in diameter than the UX199. UX199 = 25mm, UX859 = 28 mm)

Dimensions (WHD)
incl. pins / tip
x 90 x 28 mm / x 3.54 x 1.10 inch
Weight 30 g / 1.06 oz
Information source -- Collector info (Sammler)   
Tube Lore (II)   p. 79

uxsockel_11~~48.png UX859: Fin Stewart
Fin Stewart

Just Qvigstad

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