Home wireless networks transmit signals in a narrow radio frequency range of about 2.4 GHz. It is common for devices on the same frequency to interfere with the wireless signal and slow down an internet connection. Electronics such as cordless phones, garage door openers, baby monitors, and microwaves can use this frequency range. Neighbors’ wireless networks can also use the same radio signals, disrupting an internet connection, especially in homes that share walls.
How to change your WiFi channel and avoid annoying neighbors
If your electronic devices or your neighbor's network are slowing down your home network and Internet connection, change the wireless channel on your router to a different frequency to avoid interference.
The 2.4 GHz Wi-Fi signal range includes several smaller bands or channels, similar to television channels. In most countries, Wi-Fi networking equipment provides a set of available channels for you to choose from.
For example, in the United States, any of Wi-Fi channels 1 through 11 can be selected when setting up a wireless LAN (WLAN). By strategically setting this channel number, you can help avoid sources of wireless interference.