If I use the VHF radio, for that time the screen of the TV will disappear. Is my easyDVBT broken or what is happing there?

Reason for that is the following. Imagine, that a VHF would “over the easyDVBT” directly transmit with 20W. The TV or the receiver would immediately be broken. Therefore the easyDVBT unit needs to disconnect all other connected units, (except the VHF Radio) in the moment when the VHF Radio is transmitting.