radiomuseum.org

 
Please click your language flag. Bitte Sprachflagge klicken.

B_Moorhead-Europe

Information - Help 
ID = 28984
       
Country:
United States of America (USA)
Brand: Moorhead Laboratories (Pacific); San Francisco
Tube type:  Gas Triode   Detector 
  <1925 rare.
Identical to B_Moorhead-Europe = F_Moorhead
Similar Tubes
Other base:
  B_Moorhead-Shaw
First year 1919 Saga of the Vacuumtube, Tyne page 172

Base Europe 4-Pin (A, 4A, B4, since 1914)
Was used by Radio/TV-reception etc.
Filament Vf 4 Volts / If 0.7 Ampere / Direct / Battery =
Description

Family - according to Tyne: Type A is similar to SE-1444, also with hard vacuum for amplification. Type B is a similar tube, but with a low vacuum for operation as a detector with 18-40 volts on the anode. Type C is similar to Type A, except that the grid is constructed of 22 turns of molybdenum wire with a pitch of 0.3 inch, instead of nickel - and for anode voltages of 80 - 500 volts. Type D is the unbased Electron Relay (ER) previously made by Moorhead. Type E is the British standard Type R, similar to Type A, but with spherical bulb and European standard four-pin base. Type F is similar to Type E, but with a low vacuum like the Type B. Type G is similar to Type C, but has a spherical bulb and an European standard four-pin base. It is the same as the British standard Type B tube.
The base on this tube was made by the Shaw Insulator Company, which was associated with Moorhead Laboratories

 
Text in other languages (may differ)
Dimensions (WHD)
incl. pins / tip
x 110 x 54 mm / x 4.33 x 2.13 inch
Literature Saga of the Vacuumtube, Tyne   page 172
-- Collector info (Sammler)   
 
moor_bbrit.jpg
B_Moorhead-Europe: Bill Condon collection, with kind permission of Mrs V Condon
Fin Stewart

 
b4_1~~31.png
B_Moorhead-Europe: Fin Stewart
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]
  
rmXorg