Wi-Fi Signals. When building a network, you will be using Wi-Fi technology, which has some unique characteristics you will need to know. There are two types of Wi-Fi signal, based on the frequencies they use: 2.4GHz - A lower frequency, this is the more common Wi-Fi technology in use today. Many devices use it, so the signals can become more ... If your Wi-Fi is running slow or just drops out altogether in certain rooms, there are solutions you can try to fix the problem without buying a new router. For example, Windows 10 updates in early 2020 had bugs that stopped some users from connecting to their Wi-Fi networks.