To test that, he used a NanoVNA and a clever test setup. He needed a test spot out of the antenna’s near field so he set up his workstation 18 feet away from the test antenna which was on a ...

[Learnelectronics] wanted to know, too, so he broke out his NanoVNA and found out that they were all bad, although some were worse than others. You can see the results in the — sometimes fuzzy ...