If the satellite receiving antenna is placed outdoors and there are no tall buildings around, it is easy to be struck by lightning, and lightning may enter the room with the signal line, causing damage to household appliances. Moreover, the huge electromagnetic pulse generated by lightning may also interfere with TV signals.

So if this is the case, install a lightning rod on the roof, do a good job of grounding and protect the satellite antenna; Or in thunderstorm weather, unplug the indoor antenna for isolation.