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.
This circuit is from a Poptronics, American magazine from August 2000. The circuit can be...
This simple circuit uses a 200 uA microammeter of the type found as VU, being able to measure...
This circuit consists of an echo or reverberation chamber for sound systems and must be...