SDR by DVB-T usb dougles

Last month I received a twit from following @SDR_News about a cheap $20 SDR. Information show in youtube by balint256 "$20 ultra-cheap Software Defined Radio with RTL2832". The youtube inform download software at http://spench.net/r/USRP_Interface. I doing following in this page and complete install and run. First time with sample rate 2Mbps in setting ExIO_USRP. It can't change frequency when run it. Now I running at ~0.9Mbps but reduce a bandwidth for monitor, So it OK for performance. Next improve station for support.