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ID = 28859
United States of America (USA)
Brand: DeForest-Tubes
Tube type:  Triode, vacuum   Power/Output 
  Ca. 1925 up to 1945 rare.
Identical to DL14
Similar Tubes
Normally replaceable-slightly different:

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 =

This tube was originally listed as a DV4. The DV4 was not made by de Forest according to available references. As the illustration shows, it has a UX base and is actually a DL14. First made 1927 with "Isolantite" base (a type of ceramic) and discontinued 1928. Plate voltage 180.

Dimensions (WHD)
incl. pins / tip
44 x 107 x mm / 1.73 x 4.21 x inch
Information source Vintage Radio 1887-1929, Greenwood's Classic Pictorial Album   Pages 301, 302 & 305
Saga of the Vacuum Tube, Tyne   

ux_base_standard~~27.png DL14: Fin Stewart
Fin Stewart

Just Qvigstad

Collection of



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