This circuit was found in a 1980s documentation for amateur radio. The circuit is for 9 MHz signals and values in parentheses for FI of 455 kHz. The circuit can be adapted to other frequencies.
This circuit is characterized by its low input impedance and voltage gain below the unit. The...
We found this circuit in old documentation. Modern equivalent operational amplifiers can be used....
We found this circuit in the Radio Electronics magazine of December 1972. It generates signals in 6...