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DL5

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ID = 28517
       
Country:
United States of America (USA)
Brand: DeForest-Tubes
Developer: DeForest-Tubes 
Tube type:  Triode, vacuum   Audio Frequency 
  Ca. 1925 up to 1945 rare.
Identical to DL5
Similar Tubes
Normally replaceable-slightly different:
  C509A
First year 1926 ?? Saga of the Vacuum Tube, Tyne
First Source (s)
Aug.1930 : Philips Bulletin R1164, p. 32
Base UX-Base (4 Pins (2 thick, USA 1924, UX)
Was used by Radio/TV-reception etc.
Filament Vf 5 Volts / If 0.25 Ampere / Direct / Battery =
Description

First made 1926 with a black bakelite base. This was changed to "isolantite: (a type of ceramic) in 1927. The tube was discontinued in 1928.

 
Text in other languages (may differ)
Dimensions (WHD)
incl. pins / tip		 34 x 107 x mm / 1.34 x 4.21 x inch
Tube prices 1 Tube prices (visible for members only)
Information source - - Manufacturers Literature   
Saga of the Vacuum Tube, Tyne   Pages 301 & 302
-- Collector info (Sammler)
deforest_dl5_sock.png DL5: O.F.
Otto Frosinn

Just Qvigstad 		dl51.png
DL5: own collection
Peter den Boer
More ...
Museum "Das Rundfunkmuseum"

Collection of

Otto Frosinn (D)
Robert Gillespie (USA)
Pedro Prieto-Castro (E)
Peter Kahlich (D)
Bernard Sinambela (RI)
George Papaiz (CDN)
John Koster (NL)
Geri Meier (CH)
 
dl5deforest_klein_1.jpg

DL5
 
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