I recently tried to use my digital tv , it would not pick up any signal through the status 315 ariel, my tv normal channels worked fine but no digital signal at all, when i got home i tried it again and still no signal, even thou the channels were already stored from my home tv ariel were it works fine, do i need to do or buy anything extra, i prosume most are using dtv now and their must be a way round it .....any help please ladies and gents thanks