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VT100_GPO

Information - Help 
ID = 20778
       
Country:
Great Britain (UK)
Brand: Mullard Radio Valve Co. Ltd.;
Developer: Mullard Radio Valve Co. Ltd.;  
Tube type:  Triode, vacuum   Audio Frequency   Controlling (mu) 
  Ca. 1925 up to 1945 very rare. ***
Identical to VT100_GPO = CV1670
Similar Tubes
Normally replaceable-slightly different:
  HL1320 ; HL13C ; VT100B_GPO

Base British-7-Pin, old (M7A) Top contact with a cap
Was used by Telephony
Filament Vf 13 Volts / If 0.2 Ampere / Indirect / Series, AC/DC
Literature -- Collector info (Sammler)   
 
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VT100_GPO: Telefunken Werkstattbuch
Wolfgang Bauer

 

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