Please click your language flag. Bitte Sprachflagge klicken.


Information - Help 
ID = 79074
United States of America (USA)
Brand: Baker-Smith Co., Inc.; San Francisco, CA
Developer: Baker-Smith Co., Inc.; San Francisco, CA 
Tube type:  Triode, vacuum   Detector 
  Ca. 1925 up to 1945 very rare. ***
Identical to Detector_Huppert
Similar Tubes
Multiple differences or of other kind:

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 While acting as consulting engineer for the Baker Smith Co of San Francisco in 1926, Henry K Huppert designed a major variation of the UX201A tube. (Huppert had worked earlier in the 1920's for the A-P Radio Laboratories, where he designed the2 in 1 and solenoid tubes). The tube was not given a type number but simply known as a detector. The element structure differed from the standard tube in that there were two straight wire filaments connected in series and mounted vertically to the base and each was contained in its own tubular shaped grid. The tube was claimed to have a very low inter-element capacity. The tube was described in Radio News, July 1926 but no examples have so far been located. No patent has been found. The tube was not mentioned in Tyne's "Saga of the Vacuum Tube". No information has been located to say if Baker Smith made any of these tubes, however they were well known for their range of Sylfan tubes. 
Dimensions (WHD)
incl. pins / tip
x 108 x 45 mm / x 4.25 x 1.77 inch
Weight 47 g / 1.66 oz
Information source Radio News   July 1926

Just Qvigstad
Detector_Huppert: Radio News July 1926
Fin Stewart



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