Device that losslessly transforms a digital audio and video (HDMI) signal into a modulated FullHD signal (MPEG-4/H.264) into a DVB-T channel. This digital signal comes from external SD/HD source: satellite receiver, DVR/NVR, DVD, CCTV, etc. It is equipped with an HDMI pass loop to connect the input signal to the TV/monitor. The channel generated by the HDMI source can be mixed with the TNT signal and then distributed via a single coaxial cable. Its content can therefore be displayed on all receiver devices of the system. The device allows its setup via an app for Android 6.0 / iOS 13 or higher.