Adding an INA219 power monitor to a chinese USDX+ transceiver

The (tr)uSDX has hardware to measure the power amplifier voltage/current/input power. Since the output power is also measured, it can calculate and show efficiency. This is very useful for tuning the class-E output stage, and is also useful in the field to see battery voltage and other parameters. I have an uSDX+ transceiver from China. Continue reading "Adding an INA219 power monitor to a chinese…