This circuit was found in a British documentation from 1969. It can be implemented with modern transistors. The pass band is 6 MHz.
We found this easy start circuit in Electronics Now magazine from December 1993. The frequency is...
We found this circuit in an old American documentation. The circuit can be applied to modern...
This differential amplifier, found in a 1964 Electronic Design, has a gain of 30. The setting can be...