Please click your language flag. Bitte Sprachflagge klicken.


Information - Help 
ID = 9709
United States of America (USA)
Brand: Common type USA tube/semicond.
Developer: RCA (RCA Victor Co. Inc.); New York (NY) 
Tube type:  Vacuum Pentode   RF/IF-Stage 
Identical to 1851 = RK1851
Similar Tubes
Other shape (e.g. bulb type):
  1851GT ; R219
Different connections:
Other base and data slightly different:
First Source (s)
Apr.1938 : -- Original-techn. papers.

Base Octal (Int.Octal, IO) K8A, USA 1935 (Codex=Uka) Top contact with a cap.
Filament Vf 6.3 Volts / If 0.45 Ampere / Indirect / Specified voltage AC/DC

Television RF/IF pentode. 300V max plate, 150V max screen, 9000 micromhos Gm. Small control grid top cap.

Information source Taschenbuch zum Röhren-Codex 1948/49   
-- Original-techn. papers.   Electronics, April 1938

1851: Internet
Miguel Angel Trujillo-Rodriguez

374_12.png 1851: Telefunken Werkstattbuch
Wolfgang Bauer

More ...

Just Qvigstad
1851: Manufacturer paper
Tomasz Szczesniak

More ...
Usage in Models 1= 1938? ; 2= 1938 ; 3= 1939 ; 2= 1946 ; 1= 1950 ; 1= 1951??

Quantity of Models at with this tube (valve, valves, valvola, valvole, válvula, lampe):10

Collection of



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