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1642

Information - Help 
ID = 5837
       
Country:
United States of America (USA)
Brand: Common type USA tube/semicond.
Tube type:  Double Triode 
Identical to 1642 = 2C21 = 2C21/1642
First Source (s)
1942 : Tube Lore (I)

Base 7-Pin-Base-general, old, USA (Codex=Mb)
Filament Vf 6.3 Volts / If 0.6 Ampere / Indirect / Parallel, (AC/DC)
Information source Essential Characteristics, GE 1973   
Taschenbuch zum Röhren-Codex 1948/49   
 
1642_ken.jpg
1642: My Collection
Danko Tkalec

 
1642_so.png
1642: ARRL Handbook 1972
Michael Schlör

 
2c21-1642_1_3.png
1642: Manufacturer's Literature
Emilio Ciardiello



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