Recommended · for some experience
#196: How a Directional Coupler in an SWR meter works
Why people recommend it
Explains the working principle of a directional coupler using a homemade example like those inside SWR meters, cited in discussions of reflected power.
Watch for: Assumes some transmission line background
In their words
However, later I was watching w2aew's description of how a directional coupler works and I'm a little confused.
Buck8pe on electronics.stackexchange.com, Oct 2019. CC BY-SA.
