This 1967 General Electric circuit makes use of an array of 3 (integrated) transistors for an amplifier stage. The circuit has a 500 mV output.
Of course, the range of this transmitter found in a 1992 documentation is not exactly 4 km, as it...
This is the receiver for the CB1364E transmitter. Other receivers can be found in this section of...
This circuit was found in Motorola documentation from 1968, using high power transistors and...