| NanoVNA – measuring cable velocity factor - VK1OD |
| NanoVNA – measuring cable velocity factor – demonstration - VK1OD https://owenduffy.net/blog/?p=18245 https://translate.google.pl/translate?hl=pl&sl=en&tl=pl&u=https%3A%2F%2Fowenduffy.net%2Fblog%2F%3Fp%3D18245 |