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ID = 20522
Tube type:  Double Tetrode 
Identical to YL1030 = QQZ06-40

Base Septar (1+6 pins) 2 Top contacts
Was used by Transmittertube (Radio)
Filament Vf 2.1 Volts / If 4.5 Ampere / Direct
Information source Röhren-Taschen-Tabelle, (Franzis RTT)   
YL1030: Own Photograph
Bryce Ringwood

YL1030: RTT Schwandt
Günther Stabe

YL1030: Valvo,Senderöhren, 1983
Anonymous 15 Collector

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