radiomuseum.org
Please click your language flag. Bitte Sprachflagge klicken.

D400A

Information - Help 
ID = 49614
       
Country:
United States of America (USA)
Brand: DeForest-Tubes
Developer: General Electric Co. (GE); Bridgeport CT, Syracuse NY 
Tube type:  Gas Triode   Detector 
  Ca. 1925 up to 1945 rare.
Identical to D400A = 5VD_vanHorne = UX200A = 00A = SX200A = 200A = TC200A

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

Tube fitted with "isolantite" base ( a type of ceramic) For use as a supersensitive detector in amateur receiving sets.

 
Dimensions (WHD)
incl. pins / tip
45 x 108 x mm / 1.77 x 4.25 x inch
Weight 47 g / 1.66 oz
Information source - - Manufacturers Literature   1927
70 Years of Radiotubes and V.   Page 166
Tube Lore (II)

4a_ux4~~16.png D400A: own collection
Peter den Boer


Just Qvigstad
d400asmall.png
D400A: own collection
Peter den Boer

More ...
 
de_forest_d400a.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