We found this circuit in a 1967 IEEE documentation. The circuit uses discrete components of the time based on the 1.13 MHz frequency used with oscilloscopes at the time.
This Popular Electronics circuit can be found in various versions on this site and in this...
The purpose of the diode in this oscillator circuit is to limit the amplitude of the output...
This circuit can be used as a shield based on 555. The calculation of the timing network is done...