Hi Geever,
it didnt work in the stable version 2.2.1.
Now i downloaded the development version 27596 using a link from the thread "develompent version..."
Version 28412 did not work for me as well, i got an error "intl.dll is missing".
Atm i am trying this version 27596 and radar coverage is shown when the button designed for it is used
.
Unfortunately, first ufo i shot down, first bug: the loading screen appears and it freezes ;(.
Try to shoot down the ufo a little bit later now, hope it will work then..
Thanks for the answers so far, will report if i encounter other bugs again.