We found this circuit in the March 1999 issue of Electronics Now magazine. The indicator used is an analog type. The values indicated depend on the calibration.
This circuit for the 27 MHz or 11 meter-band had its assembly described in an article in Radio...
This circuit uses a feedback integrator. We found it in Ferranti's transistor manual from 1974....
This simple receiver was found in a book on transistors from 1954. The coil determines the...