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Spheria

Information - Help 
ID = 42873
       
Country:
Belgium
Brand: Unknown - CUSTOM BUILT; Belgium
Tube type:  Triode, vacuum 
Identical to Spheria = RE074 = A409

Base Europe 4-Pin (A, 4A, B4, since 1914)
Filament Vf 4 Volts / If 0.06 Ampere / Direct
Dimensions (WHD)
incl. pins / tip
42 x 90 x mm / 1.65 x 3.54 x inch
Weight 40 g / 1.41 oz
Tube prices 1 Tube prices (visible for members only)
 
spheriabild1.jpg
Spheria: Meine Sammlung
Rudolf Osterkamp

 
3_b4~~49.png
Spheria: own collection
Peter den Boer

 
spheria_1_ug_ia_diagram.png
Spheria: own measurement
Walter Barteczek



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