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ID = 22521
Tube type:  Transmitting Tetrode, air cooled   beam power 
Identical to 7580 = YL1170 = QEL2/200

Filament Vf 6.3 Volts / If 2.6 Ampere / Indirect
Information source
Christian Schaufelberger

7580: Valvo,Senderöhren, 1983
Anonymous 15 Collector

7580: Valvo,Senderöhren, 1983
Anonymous 15 Collector

Usage in Models 1= 1964?? ; 1= 1965??

Quantity of Models at with this tube (valve, valves, valvola, valvole, válvula, lampe):2

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