Siemens F2a Beam Power Tetrode for Audio Amplifier - Dissection
Tetrode für Endverstärker - Zerlegung
Tétrode pour amplificateur final - Dissection

Fiche technique • Data sheet • Datenblatt: F2a.pdf

Special thanks to Patrick Bouvyn © who provided us with this set of photographs.

 

 

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© Patrick Bouvyn