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ID = 56774
Great Britain (UK)
Brand: English Electric Valve Company Ltd. (EEV); Chelmsford
Tube type:  Beam Power Tube   Text 
Identical to C1149
Similar Tubes
Normally replaceable-slightly different:
  4PR60A ; 4PR60B ; 5D21 ; 715C ; CV427
Other class quality (otherwise equal):

Base TRANSMITTING & Power-TUBES/VALVES in gen Top contact with a cap.
Was used by Radar
Filament Vf 26 Volts / If 2.15 Ampere / Half indirect / Specified voltage AC/DC

Radial-beam tetrode intended as radar pulse modulator. 4-pin ceramic dish base.
20 kV max plate voltage, 18 A peak current, 330 kW peak pulse capability.
Unilaterally replaces 4PR60B and other tetrode modulators, as 715C, 5D21 and CV427.

Information source - - Manufacturers Literature   

5d21~~1.png C1149: Manufacturer's Literature
Emilio Ciardiello

Collection of



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