This circuit was found in Sgnetics documentation from the 80's. The circuit also has loudness control. The power supply must be symmetrical.
This an old commercial receiver found in a year 1958 magazine. The circuit uses some transformer...
May 2017 - Mouser Electronics announces the availability of new Toshiba SSM6K N Channel MOSFETs...
This circuit was obtained from an American 80's documentation. The balanced mixer can be shown in...