This device works perfectly, unless your SAT antenna is 'too' well regulated. Without going into technical details, note that if the distance between your antenna and receiver is very short, you will meet a malfunction. The signal is too strong and the receiver told you that the signal is too weak. Actually no, it is 'too hard'. I added to my installation a small attenuator 'and since everything works. Other negative points, getting started is quite long. The chains browser in real time and you can not surf to a chain and confirm to change the channel. it changes in real time. Sometimes destabilizing if you go to TF1 DISCOVERY. Finally, the USB port does not read the external files. only to be used to record a string. Note that as any machine canalsat ready (channel thank you!) We can play recorded files ONLY and only on the machine that recorded the program. If you have two identical receivers, you can not read the programs recorded by one on the other and vice versa. But this device does the job. Very good image quality. For a secondary device, or small budget, this is perfect. It also has a remote infrared receiver, but you can do without it, it's optional.