The Linksys extender's frequency bands and WiFi channels improve signal transmission and faster internet connection. The fastest internet speed is offered by the dual-frequency bands that practically all Linksys extenders enable. On the other hand, WiFi channels help to maximize network performance and prevent signal interference. Therefore, to utilize these functions, access the advanced settings on the administration site after completing the Linksys ac1200 setup. Verify that both bands are turned on and operating properly. Select less-used or less-crowded WiFi channels for your network in addition to that. Moreover, those channels need to be distinct from the network channels used by your neighbors. By doing this, the networks will experience the least amount of overlapping and interference. Try to perform or repeat the same process on a periodic basis to keep the performance flawless and seamless.