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ID = 22606
Tube type:  Beam Power Tube   Power/Output 
Identical to CV428 = 5B/251M = 5B/254M
Similar Tubes
Other base and data slightly different:

Base Loctal-8, B8G (Sylvania, 1938) Top contact with a cap.
Filament Vf 6.3 Volts / If 0.9 Ampere / Indirect / Specified voltage AC/DC
Description This is one of a range of reliable beam power tubes from STC. The 5B/254G, 5B/254M (CV428), 5B/255M (CV391), 5B/256M (CV499), 5B/257M (CV2220), 5B/258M (CV2347), were developed from the 5B/250A (807)with similar characteristics to the 807. The range comprises single and double-ended and wire terminated versions and were widely used in military and civilian equipments for both audio and radio frequency applications up to 125 MHz.
Total anode and screen dissipation <25W.
Power outputs from a pair at 60 MHz class C can achieve 40W with anode voltages of 600. At audio frequencies a pair in class AB2 can achieve 80W rms. 

5b254m_1.png CV428: Datenblatt
Wolfgang Bauer

Just Qvigstad
CV428: Manufacturer's Literature
Emilio Ciardiello

More ...
Usage in Models 2= 1955?? ; 1= 1955? ; 2= 1960??

Quantity of Models at with this tube (valve, valves, valvola, valvole, válvula, lampe):5

Collection of

Documents about this component
  Manufacturer's Data Sheets 563 KB


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