Thanks to IF, I discovered that there was a VHS Omnidirectionnal Range (VOR) very close to where I live.
After a bit of research, I found it and as I had never seen one with my own eyes, I decided to go and see it.
Here is Melun’s VOR (VOR MLN)
I couldn’t take a better picture as the access was prohibited and apparently dangerous
Danger of death"
VOR are physical facilities that allow planes to navigate and to know there position by all kinds of weather. These might disappear as GPS is getting more and more reliable.
If you want to learn more please watch El Famoso Captain Joe’s videos :