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History of the manufacturer  

Helo, Helsinki

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Name: Helo, Helsinki    (FIN)  
alternative name:
Radiotehdas Helo, Helsinki
Abbreviation: helo

Radiotehdas Helo, Helsinki, MeRa


This manufacturer was suggested by Lasse Nirhamo.

Some models:
Country Year Name 1st Tube Notes
FIN  28 unknown RE084