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QP22B

Information - Help 
ID = 11582
       
Country:
Great Britain (UK)
Brand: Mullard Radio Valve Co. Ltd.;
Tube type:  Double Pentode   Power/Output 
Identical to QP22B = K77B
Similar Tubes
Normally replaceable-slightly different:
  QPT2

Base British-7-Pin, old (M7A) (Codex=No)
Filament Vf 2 Volts / If 0.3 Ampere / Direct / Battery =
Dimensions (WHD)
incl. pins / tip
38 x 110 x mm / 1.50 x 4.33 x inch
Weight 49 g / 1.73 oz
Information source Taschenbuch zum Röhren-Codex 1948/49   
 
qp_22b.jpg
QP22B: Own Collection
Tor Steinnes

 
547_1.png
QP22B: Telefunken Werkstattbuch
Wolfgang Bauer

 
qp22b.png
QP22B: Mullard Maintenance Manual 1954
Achim Dassow


from Just Qvigstad

Usage in Models 1= 1933? ; 1= 1937? ; 2= 1938 ; 1= 1939? ; 8= 1939 ; 2= 1948

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):15


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