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.
This circuit can handle 25 A unde a 32 V voltage using a hight power old transistor. This...
This didactic circuit from a 1977 Radio Shack documentation shows how to use the 741 as a...
It can be obtained from Mouser Electronics new crystals for surface mounting from AVX with...