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, suggested by Philips Components (1980), uses a fast voltage comparator and requires...
The integrated PLL XFl2211 (Exxar) is used to decode data transmitted by tones R1, C1, C2 and C3...
This circuit of a Popular Electronics from the 90s makes use of components of the time. The...