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FM500

Information - Help 
ID = 12727
       
Country:
United States of America (USA)
Brand: General Electric Co. (GE); Bridgeport CT, Syracuse NY
Developer: General Electric Co. (GE); Bridgeport CT, Syracuse NY 
Tube type:  Screen-grid Tetrode   Audio Frequency 
Identical to FM500
Similar Tubes
Normally replaceable-slightly different:
  UY224

Base UY-Base, 5 Pins (USA, April 1927) (Codex=Ha) Top contact with a cap.
Was used by Industrial
Filament Vf 2.5 Volts / If 1.7 Ampere / Indirect / Parallel, (AC/DC)
Description

This tube was designed as an industrial version of the UY224. It was described by GE as a screen grid pliotron, AC. 

 
Dimensions (WHD)
incl. pins / tip
x 123 x 45 mm / x 4.84 x 1.77 inch
Weight 48 g / 1.69 oz
Information source Taschenbuch zum Röhren-Codex 1948/49   
- - Manufacturers Literature   GE Vacuum Tube Designations 12/10/1930
 
s_225_g_20.gif
FM500: W.Sprick: Austausch-Röhren-Lexikon 1947
Günther Stabe

 

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