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QBL4/800

Information - Help 
ID = 21994
       
 
   
Tube type:  Transmitting Tetrode, air cooled   VHF 
Identical to QBL4/800 = 4X500A

Base SPECIAL TUBEBASE in general Top contact with a cap.
Was used by Transmittertube (Radio)
Filament Vf 5 Volts / If 13.5 Ampere / Direct
Description

Philips equivalent of 4X500A VHF transmitting tetrode.

 
Information source
 
qbl4800.jpg
QBL4/800: RK
Rudolf Kernchen

 
qbl4800_sock.png
QBL4/800: Valvo,Senderöhren, 1983
Anonymous 15 Collector

 
qbl4800_spec1a.png
QBL4/800: Valvo,Senderöhren, 1983
Anonymous 15 Collector



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