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1221

Information - Help 
ID = 9700
       
Country:
United States of America (USA)
Brand: Sylvania (Hygrade, GTE, Nilco); Emporium (PA)
Developer:  
Tube type:  Vacuum Pentode   Universal 
Identical to 1221
Similar Tubes
Other class quality (otherwise equal):
  6C6 ; 7E5_Pentode
Other base:
  1223
Predecessor Tubes 6C6  

Base 6-Pin-Base U6A, old, USA (Codex=Kf)
Filament Vf 6.3 Volts / If 0.3 Ampere / Indirect
Description

Low-microphonics version of 6C6.

 
Information source Taschenbuch zum Röhren-Codex 1948/49   
- - Manufacturers Literature   
Tube Lore (I)
  1221_umgebung.png
  1221: MK-Röhrentabelle
Daniel Consales
 
1221_sylvania.jpg
1221: My tubes
Anonymous 413 Collector

 
6f.png
1221
Emilio Ciardiello

 

from Just Qvigstad

Collection of a member from FIN

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