radiomuseum.org
Please click your language flag. Bitte Sprachflagge klicken.

VT-21

Information - Help 
ID = 28906
       
Country:
United States of America (USA)
Brand: DeForest-Tubes
Developer: DeForest-Tubes 
Tube type:  Triode, vacuum   Universal 
Identical to VT-21
First year 1917 ?? Saga of the Vacuum Tube, Tyne page 120, 122, 131

Base UY-Base, 5 Pins (USA, April 1927)
Was used by Radio/TV-reception etc.
Filament Vf 4 Volts / If 1.1 Ampere / Direct
Description

This tube was made for the US Signal Corps. 15057 tubes were madeand supplied between March 8, 1918 and September 18, 1918. for the US Military. the tube was developed in 1917.

 
Tube prices 2 Tube prices (visible for members only)
Information source Saga of the Vacuum Tube, Tyne   p. 120, 122 & 131


Just Qvigstad

Collection of

 
20200226_191617.jpg

VT-21
 

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