This circuit is from a 1977 Signetics integrated circuit manual. The output transistors can be BD136 and BD237 and the symmetrical supply can be from 6 to 12 V. The voltage gain is 10.
Suggested by Siliconix in documentation from the 90s, this amplifier has its gain digitally...
The L1 and L2 coils of this receiver depend on the waveband you want to receive. Normally L2 has...
We found this circuit in a 1967’s Electronics World. The circuit can be made with modern...