Please click your language flag. Bitte Sprachflagge klicken.


Information - Help 
ID = 19499
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:
First year 1924 Saga of the Vacuum Tube, Tyne page 400, 401

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

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)
Tube prices 1 Tube prices (visible for members only)
Information source Saga of the Vacuum Tube, Tyne   page 400, 401
6/100: own collection
John Koster

More ...
6/100: KoBi
Konrad Birkner † 12.08.2014

6/100: own collection
Peter den Boer

More ...

from Just Qvigstad

Usage in Models 3= 1927 ; 1= 1928?

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

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]