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.
Originally suggested by Electronic Design in a 1965 documentation for use with oscilloscopes, this probe has...
This circuit uses currently uncommon components, including the 10.7 MHz (FI) filter. This circuit was...
This optical tachometer with LASCR was found in a 1965 General Electric documentation. The diode at...