The resistors R1 and R2 consist of 8 220 ohms x 2 W resistors connected in parallel. The dissipation must be higher for high transmitter power. The indicator can be the multimeter.
Found in a 1980s publication for amateur radio, this circuit employs an MC1596G which is a...
This circuit is based on an uncommon Texas component today, as found in an American 1980s...
Activating a relay from pulses (from a monostable, for example) can be useful in many types of...