QRQ CW - AM Modulated @64Khz - demod by Rohde's Detector circuit, filter output through W3NQN filter

custom w3nqn QRQ CW filter

https://imgur.com/zauJdeV

https://imgur.com/fxZoPUz

Rohde's AM Detector Circuit

http://www.pan-tex.net/usr/r/receivers/elrpicamdetect.htm

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