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ID = 27509
Great Britain (UK)
Brand: GEC, General Electric Co Ltd., GENALEX; London
Tube type:  Half-Wave Mercury-Vapor Rectifier   Power-supply 
Identical to AH221
Similar Tubes
Other shape (e.g. bulb type):
Normally replaceable-slightly different:
  CV1435 ; CV5

Base Edison giant, E40 = 40 mm-Goliat Top contact with a cap.
Was used by Transmittertube (Radio)
Filament Vf 4 Volts / If 11 Ampere / Direct

Meets CV5 and CV 1435 Specification. <20kV PIV. Ipk <5A. Mean Ia <1.25A.

Dimensions (WHD)
incl. pins / tip
63 x 270 x mm / 2.48 x 10.63 x inch
Weight 113 g / 3.99 oz
Information source Universal Vade-Mecum, Electron Valves and Semiconductor Devices   Section 63, p. 86

edison_rect.png AH221: Manufacturer's Literature
Emilio Ciardiello

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