Cesar Cadenas/ZDNET Follow ZDNET:  Add us as a preferred source  on Google. ZDNET's key takeaways Adjusting a router's antenna can help boost Wi-Fi signals. The ideal setup depends on your home space, potential obstacles, and the angle of the antennas. For optimal performance in a multistory home, place the antennas at 30 degrees and the router in a central location. The more things change, the more they stay the same. When I was a kid, I had to constantly adjust the rabbit-ear antenna on my old CRT TV to get a clear picture. As technology advanced, I figured those days were behind us. Most people watch their favorite shows and movies over Wi-Fi . You would think Wi-Fi is better than old TV signals, but you may need to adjust your Wi-Fi router's antennas to maintain a strong, consistent signal. Also: Traditional Wi-Fi router vs. mesh: How to decide between the 2 popular networking options Simply plugging your router into a modem and dropping it wherever there's space isn't enough.…