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YL1220

Information - Help 
ID = 20465
       
 
   
Tube type:  Double Tetrode 
Identical to YL1220
Similar Tubes
Normally replaceable-slightly different:
  8577
Heater different:
  QQE02/5

Base Noval, B9A
Filament Vf 13.5 Volts / If 0.28 Ampere / Indirect / Parallel, (AC/DC)
Description Zwei Heizfäden seriell (~ Heizfadenmitte), daher auch Betrieb mit 6,75 V und 0,56 A 
Literature Röhren-Taschen-Tabelle, (Franzis RTT)   
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no56_g_3.gif
YL1220: RTT Schwandt
Günther Stabe

 
yl1220_spec1a.png
YL1220: Valvo,Senderöhren, 1983
Anonymous 15 Collector


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