Who can read is a clear advantage. I had hoped that the device amplifies the signal. But it can not. So my disappointment is indeed understandable but pointless. It functions, as it will be described. Line losses are minimally, ie negligible. The installation is well described and the components make a quality impression. the cable length should be sufficient lockker in most cases. I recommend the "sample installation", not yet final to secure the components and also to drill holes. First through the open window, light well, cellar hatch etc. be carried out and hang freely to see if the "external signal extension" provides a satisfactory result! For the price absolutely recommendable, but hold only under certain conditions can be used. So, just who is "out there" but a good signal has in the application (shielded interiors, concrete buildings with high Stahlarmierungsanteil in the walls etc.) reinbekommt not a good sign, may access here! Price / performance ratio = good.