UNusual FM ratio detector

[aurelZ]

Hi
Most of us know what is ratio detector but i recently found this one on
a japanise site where guy explained that work, so i quickly made a replica then is found that
not work ,,well maybe he use extra powerful RF out ...
any comment on that ????
https://qhodo.at.webry.info/201001/article_7.html

 

[aurelZ]

And update to one transistor fm superhet