Today this frequency corresponds to the end of the FM band. However, in December 1958, when the circuit was published in Radio Electronics magazine it was the frequency used by American satellites.
This is a conventional double T oscillator, where the frequency is determined by the double T...
This simple audio signal tracer or follower can be made with a BC548 instead of the original...
I found this circuit in a 1992 Electronics Experimenter Handbook. The circuit can be easily...