This transmitter for the 40 meter or 7 MHz band was found in a magazine 73 for radio amateurs of the 90s. The circuit has a power of ½ W.
This circuit was obtained from an English magazine from 1979, but can be easily assembled...
The purpose of this circuit is used in communications and to respond to signals that are in the 2...
This circuit was found in the November 1989 Radio Electronics magazine. Power supply depends on...