This product accepts a high definition HDMI AV signal and places it on a standard UHF television channel to be transmitted over 75Ω cable. HDMI material from a computer, DVD or Blu-Ray player, video game, HD video camera or similar source may be placed on any TV channel from CH14 through CH69. That signal may be combined with existing RF signals from outdoor television antennas or other ATSC modulators, set to different channels. Connections include HDMI input plus feedthrough output, and modulated RF output (female F) and loop through input. USB input is also provided allowing the playing of media files from thumb drives and similar storage devices, over the modulated output.