The nominal coverage of some radars is absent.
In any case, the maximum coverage is 200 km for the C-band systems and 100 km for X-band systems.
It would be useful, to exclude the inactive radars to avoid ambiguity.
See the following website for more details:
https://radar.protezionecivile.it

Apparently (according to Windy) the single-radar nominal coverage is about 250 km. Actually, the real coverage is 200 km. I suggest to correct this feature to avoid misleading the users