dv3 tv

i bought bush dv3tv with video recorder but i cant seem to tune in the digital channels every time i try i only get bbc1 to channel five, can anyone help me here as to why it will only tune 5 channels, the video is also connected to the tv via a scart plug.
appreciate any one out there with an answer

The thing about USB DVB-T receivers is that they're just that - receivers. The real work is done in the software, which demultiplex and process the transmission.