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ID = 20501
Tube type:  Double Tetrode 
Identical to QQE03/32
Similar Tubes
Normally replaceable-slightly different:

Base Septar (1+6 pins) 2 Top contacts.
Filament Vf 12.6 Volts / If 0.65 Ampere / Indirect / Specified voltage AC/DC
Description Heizfaden-Mittelanschluss, daher auch Betrieb mit 6.3 V und 1.3 A 
Weight 55 g / 1.94 oz
Information source Röhren-Taschen-Tabelle, (Franzis RTT)   

sp9_g_3.gif QQE03/32: RTT Schwandt
Günther Stabe † 19.8.20

QQE03/32: Valvo,Senderöhren, 1983
Anonymous 15 Collector

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