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D4_Philips

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ID = 44375
       
Country:
Netherlands
Brand: Philips; Eindhoven (tubes international!); Miniwatt
Developer: Philips; Eindhoven (tubes international!); Miniwatt 
Tube type:  Gas Triode   Detector 
  <1925 rare.
Identical to D4_Philips = D-IV = Detector_Star = PR11_UV-Condor
Similar Tubes
Other base:
  D1
Base UV-Base (4 Pins+Bayonet, USA 1914 WE)
Was used by Radio/TV-reception etc.
Filament Vf 3.5 Volts / If 0.5 Ampere / Direct / Battery =
Description

This tipless type is only made second half of 1924 and in 1925. The text on the glass: "Sold for amateur use only" indicates that this tube was made for the American market.

 
Text in other languages (may differ)
Dimensions (WHD)
incl. pins / tip		 45 x 98 x 35 mm / 1.77 x 3.86 x 1.38 inch
Weight 43 g / 1.52 oz
Information source -- Collector info (Sammler)   Banneitz, TB der drahtl. Telephonie u.Telegr. 1927
- - Manufacturers Literature   H732 15-1-1924
b4b5base_1.png D4_Philips
Peter den Boer

Just Qvigstad 		d4data.png
D4_Philips: own collection
Peter den Boer
More ...

Collection of

Peter den Boer (NL)
Jehu Bloodworth (USA)
 
d4_1.jpg

D4_Philips
 
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