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861

Information - Help 
ID = 25326
       
Country:
United States of America (USA)
Brand:
Developer: RCA (RCA Victor Co. Inc.); New York (NY) 
Tube type:  Transmitting Tetrode, air cooled   Power/Output 
Identical to 861 = VT-19 = CWL861 = 561_deforest
Similar Tubes
Normally replaceable-slightly different:
  38161 ; CV641 ; F331A ; PR-861 ; SE-3124A ; WL-407

Base Pin-and-blade jumbo (3 contacts) Sidecontact and top contact.
Was used by Transmittertube (Radio)
Filament Vf 11 Volts / If 10 Ampere / Direct / Specified voltage AC/DC
Description

Tetrode version of 831, with one extra side cap on bulb for the screen grid.
GE, Machlett, RCA and Westinghouse known sources.

 
Dimensions (WHD)
incl. pins / tip
x 435 x 252 mm / x 17.13 x 9.92 inch
Information source Tube Lore (II)   p. 79
Tube Lore (I)   
- - Manufacturers Literature
Taschenbuch zum Röhren-Codex 1948/49

861_sock.png 861: Tabu Röhren-Codex, 1948
Anonymous 15 Collector

More ...

Just Qvigstad
860_1.png
861: RCA Technical Manual TT3
Miguel Angel Trujillo-Rodriguez

More ...
 
861.jpg

861
 

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