Document converti depuis ve2cuy.com/blog — dernière modification : 2010-05-23
Here is a one tube AM radio with a RF section (6EA7 H-MU) and a AF section (6EA7 L-MU). The AF section is able to drive a speaker.
For a one tube radio, we get decent reception. Listen for yourself:
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▶️ Vidéo YouTube : Voir la vidéo
In the video, H-MU section (RF) drain 0.21ma and L-MU (AF) drain 18.9 ma.
B+ is around 150 volt.