Receiving Digital

[itsallyellow]

Not quite sure were to post this. Also posted on 'Internet & Techonolby'. I have a Free View box and I live in South Leicestershire. My aerial picks up West Midlands/Sutton Coldfield. My pick up isn't the strongest and I struggle to get channels like Film4 and FTN. Is there any thing I can buy to boost my signal, if so what is the best product to help me get better reception other than getting an actual digital arial fixed to my house.