My homebrew CW/SSB receiver for 20m band based on NE612 chip.
The crystals in the ladder filter are not perfectly matched. The tuning potentiometer is recycled and has mechanical flaws so I shoud hold it with my thumb while tuning. :-)
For all, who would like to receive the schematics and PCB, please send me a PM with your e-mail address.
Because there are lot of requests, there is the schematics of this receiver: https://twitter.com/BalageJ/status/216531997563174913/photo/1