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Homebrew PWR/SWR Meter: Part 2 - Directional Coupler Idea

Video looking at an initial idea for a directional coupler. Please note that this is not suppose to be a competition or commercial grade device. My aim is to keep the costs down, but still have a functional power/SWR meter at the end. The aim now is to condition the DC before feeding it into the Arduino. I did not mention in the video that I placed the directional coupler between the antenna tuner and the dummy load. I did not see any increase in the tuner's SWR meter as a result of the directional coupler. Details at: https://zl2ctm.blogspot.com/2019/01/h...