The high capacity H-12HDMI-ATSC-IPLL Encoder Modulator from Thor Broadcast has a sophisticated redesigned platform for enabling modulation of up to 12 HDMI sources and 12 CVBS CC(Closed Caption) sources simultaneously. This unit has the ability to ingest IP Transport Streams and multiplex them among the RF output channels, similarly you can also input a single ATSC(or other RF modulation standard) and add its transport streams among the QAM output. This unit comes standard with a plethora of options to help you add extra transport streams from various media to build your own RF headend quickly and easily without extra hardware. The H-12HDMI-QAM-IPLL supports MPEG2 and MPEG-4 AVC/H.264 video encoding and MPEG1 Layer II audio encoding (MPEG-2 AAC, MPEG-4 AAC Optional), Dolby Digital AC3, as well as AC3 pass through. This unit has the ability to multiplex, create, and add program streams to your RF QAM cable channels cost-effective design make this device widely used in variety of digital distribution systems such as CATV headend cable systems, creating your own digital signage systems, and adding HDMI sources to your existing QAM cable system in a single 1RU high density encoder modulator from Thor.