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A4AM7S

Information - Help 
ID = 22643
       
Country:
Spain
Brand: Castilla; Madrid
Tube type:  Vacuum Pentode 
Identical to A4AM7S
Similar Tubes
Normally replaceable-slightly different:
  AF7

Base Europe side contact P8A (Au P, 8SC) Top contact with a cap.
Filament
Information source

a4am7s_so.png A4AM7S: rtt
Anonymous 10 Collector


Just Qvigstad
 

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