Discussion and development of LNB that is used in conjunction with an rtl-sdr to downconvert L-band to a frequency more usable by the radio.
http://goughlui.com/2013/11/10/rtl-sdr-a-tool-for-visualizing-broadcast-satellite-signals/ http://digitalbitrate.com/dtv.php?mux=11470&pid=33&live=65&lang=en