Splitting coax signal.

[Gingerbread Man]

I live in a area surrounded by forest and come any bad weather, it's quite likely that my TV signal suffers.

I currently have a TV aerial going to a box on the outside of my house where it splits into two. One feed going to the bedroom and one feed going to my lounge TV.

My amp in the lounge can play radio, but using any standard radio aerial doesn't pick anything up. The TV coax cable runs right past the amp. Can I put a splitter into this and tee off for the amp radio and then onto my TV.

Would this A: work? and B: would it affect my signal even further?

[Gingerbread Man]

Thought it might not work well. Oh well, I've internet radio and DAB in the other room.