Found in July 1975, Radio Electronics magazine this circuit can use any operating circuit, including the 741. The circuit must use a symmetrical power source.
Found in American documentation from 1968, this circuit has an acute cut-off of the frequency to...
This circuit was found in a 1994 documentation, but it can be easily assembled today, as it uses...
This RF wattmeter was found in an American 1980s documentation. The components are common and the...