radiomuseum.org

 
Please click your language flag. Bitte Sprachflagge klicken.

VT-221

Information - Help 
ID = 11822
       
Country:
United States of America (USA)
Brand: Common type USA tube/semicond.
Tube type:  Vacuum Pentode   Power/Output 
Identical to VT-221 = 3Q5GT = 3Q5
Similar Tubes
Other shape (e.g. bulb type):
  3Q5G ; DL33 ; Z8191

Base Octal (Int.Octal, IO) K8A, USA 1935 (Codex=Uzb)
Filament Vf 2.8 Volts / If 0.05 Ampere / Direct / Battery =
Description Heater also 1.4V / 0.1A 
Text in other languages (may differ)
Literature Taschenbuch zum Röhren-Codex 1948/49   
 
vt221.jpg
VT-221: RFJ
Roy Johnson

 
s_310_g.gif
VT-221: W.Sprick: Austausch-Röhren-Lexikon 1947
Günther Stabe

 

Usage in Models 1= 1942?

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):1


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]
  
rmXorg