| Finding the electrical length of the branches of an N type T – #1-4 - VK1OD |
| Finding the electrical length of the branches of an N type T – #2 https://owenduffy.net/blog/?p=18359 https://translate.google.pl/translate?hl=pl&sl=en&tl=pl&u=https%3A%2F%2Fowenduffy.net%2Fblog%2F%3Fp%3D18359 |