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W443_4pin

Information - Help 
ID = 21043
       
Country:
Netherlands
Brand: Longlife, the Hague
Tube type:  Vacuum Pentode   Power/Output 
  Ca. 1925 up to 1945 rare.
Identical to W443_4pin = RES174d = B443_4pin
Similar Tubes
Other base:
  W443
Production stop Feb.1938

Base Europe 4-Pin B4 + side contact
Filament Vf 4 Volts / If 0.15 Ampere / Direct / Battery =
Description

The "Röhren-codex" lists this tube as a Thermion tube, but the brand is Longlife. The type on the picture is a Longlife Superior type W443.

 
Information source - - Manufacturers Literature   Sept. 1935

w4434pin_so.png W443_4pin: rtt
Anonymous 10 Collector


Just Qvigstad

Collection of

 
w443superior.jpg

 

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