This circuit was found in a 1980s documentation for amateur radio. The circuit is for 9 MHz signals and values in parentheses for FI of 455 kHz. The circuit can be adapted to other frequencies.
This circuit was found in an English magazine from 1979. The magazine no longer exists, but the...
This circuit generates signals in the range of 50 kHz to 1 MHz with a rectangular waveform. The...
We found this circuit in the October 1974 issue of Radio Electronics magazine. Note the waveforms...