The circuit presented is from the Motorola Linear Databook of 1990. The integrated circuit is a transconductance operating and the power supply need not be symmetrical.
This receiver was found in a 1968 publication, but can be mounted with a BC548 and BC558 in place...
Found in 1965s General Electric documentation, this circuit is intended for the control of servos...
The integrated circuit used in this 90's circuit is not very common today. An equivalent...