IMPORTANT NOTE: currently I am working on updating this design that I will replace soon with the new files. The new version will only have two scales available ( 2W and 20W ), it will have an output for a voltmeter, a 40dB attenuated output for your tinySA or an oscilloscope. The dummy load resistor will be installed on a heatsink on the back of the enclosure ( not on the PCB board as it is now ). It will be more precise and it should work well on all HF bands. Not sure about VHF / UHF yet. You will have to provide the external hardware. PCB Way will not provide these on the assembled version. More details in the Blog Article ( coming soon ).

Here is the older design. A simple QRP wattmeter and dummy load that allows you to measure the RF output power. Designed for QRP with 1W to 10W scales or 2W to 20W. Optionally you also have an output to connect a voltmeter.

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