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6/100

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ID = 19499
       
Country:
France
Brand: Métal; France (tubes)
Developer: Métal; France (tubes) 
Tube type:  Triode, vacuum   Universal 
  <1925 rare.
Identical to 6/100 = 6/100Am = 6/100Amp
Similar Tubes
Other base:
  6/100_Y4
First year 1924 Saga of the Vacuumtube, Tyne page 400, 401

Base Europe 4-Pin (A, 4A, B4, since 1914)
Filament Vf 4 Volts / If 0.06 Ampere / Direct / Battery =
Description

In 1924 marketet tubes having both a name and a number. This tube: 6/100 Micro-Mètal. Note G-D-E-R etched on tube: Groupement pour le Dèveloppement des Èmissions Radiophoniques (Group for the development of broacasting), which existed from 1924 to 1929. This Organization was formed to give financial assistance to broadcasting stations before they had income from advertising. Funds were raised by a tax on all tubes sold in France - whether domestic foreign. Supporting manufacturers could brand their tubes with this mark.

 
Text in other languages (may differ)
Literature Saga of the Vacuumtube, Tyne   page 400, 401
 
6100metal.jpg
6/100: own collection
John Koster

 
b4sockel_6.png
6/100: KoBi
Konrad Birkner † 12.08.2014

 
metalinlalmanachsmall_7.png
6/100: own collection
Peter den Boer


Usage in Models 3= 1927 ; 1= 1928?

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):4


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