Every cable generates some signal loss (up to 0.5dB/meter!). It is inevitable, no matter the quality nor the length of the cable. However, we can reduce it to a bare minimum by using as short cable as possible. We hope that you now understand why the answer „The shorter the cable, the better” is right. That is why integrated solutions like antenna and router in one enclosure are very efficient due to a very short connection between them. Not only you don’t have to choose the right length, but you can also be certain that every other parameter matches e.g. cable resistance. Want to know more.