radiomuseum.org

 
Please click your language flag. Bitte Sprachflagge klicken.

PR1

Information - Help 
ID = 28684
       
Country:
Russian Federation
Brand: Tversk Station, Nigniy-Novgorod
Developer: Tversk Station, Nigniy-Novgorod 
Tube type:  Triode, vacuum   Audio Frequency 
  <1925 very rare. ***
Identical to PR1
First year 1919 ?? Saga of the Vacuumtube, Tyne page 273
Predecessor Tubes TM  

Base Europe 4-Pin (A, 4A, B4, since 1914)
Was used by Military and/or Government
Filament Direct / Battery =
Description

Tube designed by Mikhail Alexandrovich Bontsch-Brujewitsch. He studied the design of the French TM tube and developed a similar style tube. The main difference was that the anode was a sheet of aluminium. This was necessary as normal metals used in anodes was not available at the time. According to Tyne, the tube was perfected towards the end of 1919.

 
Text in other languages (may differ)
Literature Saga of the Vacuumtube, Tyne   Pages 272-273
 
b4_1~~62.png
PR1: Fin Stewart
Fin Stewart

 

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