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AC/S1VM

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ID = 22586
       
Country:
Great Britain (UK)
Brand: Mazda = Valve (Tube) brand GB (see also France)
Tube type:  Screen-grid Tetrode   RF/IF-Stage   Controlling (mu) 
Identical to AC/S1VM = VS4 = 4VMAC = VM4V
Base Europe 5-Pin , B5 (Eu O, F, O5A) 1928 Top contact with a cap.
Filament Vf 4 Volts / If 1 Ampere / Indirect / Specified voltage AC/DC
Information source History of the British Radio Valve to 1940   P. 148 & 193
- - Manufacturers Literature   Catalogue of Mullard Master Valves 1936/37
Babani, International Radio Tube Encyclopaedia
Taschenbuch zum Röhren-Codex 1948/49
vp5.png AC/S1VM: Fin Stewart
Fin Stewart

Just Qvigstad 		acs1vm_acsgvm.png
AC/S1VM: own collection
Peter den Boer
Usage in Models 1= 1932? ; 3= 1932 ; 6= 1933 ; 1= 1934
Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):11

Collection of

Howard Craven (GB)
 
gb_mazda_acs1vm.jpg

 
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