radiomuseum.org

 
Please click your language flag. Bitte Sprachflagge klicken.

DL4_deForest

Information - Help 
ID = 28516
       
Country:
United States of America (USA)
Brand: DeForest-Tubes
Developer: DeForest-Tubes 
Tube type:  Triode, vacuum   RF/IF-Stage 
  Ca. 1925 up to 1945 rare.
Identical to DL4_deForest
First year 1926 ?? Saga of the Vacuumtube, Tyne Seite 301

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

Plate voltage 90. Designed as a special purpose RF amplifier-oscillator. First made 1926 with "Isolantite " base ( a type of ceramic). Tube was discontinued in 1928. There was no matching DV4 tube made.

 
Dimensions (WHD)
incl. pins / tip
34 x 107 x mm / 1.34 x 4.21 x inch
Literature - - Manufacturers Literature   
Saga of the Vacuumtube, Tyne   Page 301
-- Collector info (Sammler)
 
dl4_deforest.jpg
DL4_deForest: my collection
Giuseppe Antonio Tusini

 
deforest_dl4_sock.png
DL4_deForest: O.F.
Otto Frosinn

 
dl41_1.png
DL4_deForest: own collection
Peter den Boer



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]
  
rmXorg