The two circuits shown show how to obtain an SSB / CW control for receiving this signal top at a common receiver. The circuits were found in an old American manual from the 80's.
September 2016 - can be found at Mouser Electronics the new amplifiers with digital variable gain...
The 4047 is a monostable/astable CMOS multivibrator. The basic con- figuration is triggered by the...
We find this circuit in American documentation from the 1980s. The accuracy of the circuit depends on the...