Please click your language flag. Bitte Sprachflagge klicken.


Information - Help 
ID = 25326
United States of America (USA)
Developer: RCA (RCA Victor Co. Inc.); New York (NY) 
Tube type:  Transmitting Tetrode, air cooled   Power/Output 
Identical to 861 = VT-19 = 561_deforest = CWL861
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

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 & 214
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
861: RCA Technical Manual TT3
Miguel Angel Trujillo-Rodriguez

More ...


You reach this tube or valve page from a search after clicking the "tubes" tab or by clicking a tube on a radio model page. You will find thousands of tubes or valves with interesting links. You even can look up radio models with a certain tube line up. [rmxtube-en]

Data Compliance More Information