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.
June 2017 - In its huge line of available components, Mouser Electronics highlights the new...
The circuit below was found in the March 1990 issue of Radio Electronics magazine. The circuit...
This transistorized astable for LEDs was found in the January 1992 issue of Radio Electronics...