This circuit was obtained in a QST magazine from the 90s. The circuit makes use of components that are uncommon today. The circuit includes a gain selection switch.
Two potentiometers mounted at right angles, so that they can be operated by a lever, form a very...
The purpose of this modified astable is to make the initial pulses have the same duration as the...
This circuit was found in an American 80's circuit board. The components used are current except the...