radiomuseum.org

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

 

You reach this tube or valve page from a search after clicking the "tubes" tab or by clicking a tube on a radio model page. You will find thousands of tubes or valves with interesting links. You even can look up radio models with a certain tube line up. [rmxtube-en]
  

Data Compliance More Information