i get really bad tv reception in my home, ok in the living room as i have cable tv but the rest of the house is a bit hit and miss. i have had a few companies around to give me a quote on installing tv sockets in the other rooms and keep getting conflicting advise. the last one said that to run 4 or more tvs off one roof ariel i need a amplifier which will need to have a power supply and switched on to get the tvs to get reception. no other companies have said this. who is right, can i get reception for say 5 tellys from one roof ariel, will i need a special roof ariel or will the one i have be ok. please can anyone help.