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ID = 65360
Great Britain (UK)
Brand: British Tungsram Radio Works Ltd.
Developer: British Tungsram Radio Works Ltd. 
Tube type:  RECTIFIER TUBE (Detail uncertain)   Detector 
  Ca. 1925 up to 1945 very rare. ***
Identical to VT118A_GPO = CV1686
Similar Tubes
Other characteristic (electr. data):
  CV1687 ; D418 ; VT118B_GPO

Base Europe 3-Pin B3 (Eu H) Top contact with a cap.
Was used by Telephony
Filament Vf 4 Volts / If 0.18 Ampere / Indirect / Specified voltage AND current AC/DC

Used as a detector, rectifier and output tube. No grid pin

The VT118A_GPO and VT118B_GPO are selected versions of the D418. They differ in anode impedance, the VT118A_GPO has an impedance range of 2250 to 3000 ohms; the VT118B_GPO a range of 3000 to 3750 ohms.

Information source -- Collector info (Sammler)   
VT118A_GPO: Fin Stewart
Fin Stewart


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