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M_bigril

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ID = 50040
       
Country:
France
Brand: La Radiotechnique (RT); Paris, Suresnes
Tube type:  Dual-Grid Tetrode 
  Ca. 1925 up to 1945 rare.
Identical to M_bigril

Base French Bigrille 5 pin (D)
Filament Direct / Battery =
Description

On glass: RT logo, Radio Micro Bigril type M.

 
Dimensions (WHD)
incl. pins / tip
38 x 100 x 37 mm / 1.50 x 3.94 x 1.46 inch
Weight 48 g / 1.69 oz

Usage in Models 1= 1928

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):1

Collection of

 
rtbigrilm.jpg

M_bigril
 

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