FET simple mixer (CB8760E)

We found this simple mixer in a 90s Radio Electronics. The used FETs are still common. The inputs are high impedance.

4-Transistors MW Radio (CB18289E)
This 1956 direct amplification radio circuit was found in a documentation from Sylvania that...
400 Hz 741 Oscillator (CB17028E)
This conventional oscillator with the 741 can be precisely adjusted to produce a 400 Hz signal. The...
Crystal receiver with folder (CB8495E)
This circuit uses two diodes in a doubling configuration to receive medium-wave range signals. The...