Noise is the measure of RF energy, in the selected channel, that is not considered to be from a WIFI device. The value is measured from 0db to -120db and values closer to -120db are better (less noise). Typical noise environments range from -90 to -98db. Potential sources of noise for 2.4GHz Band are: Microwaves, Bluetooth devices, Digital and Analog Baby Monitors, Non-DECT Cordless Phones, Wireless Cameras (mixed frequency video), Zigbee Devices, Wireless audio/video devices, Alarm systems, Harmonics from LCD displays, X10 cameras, Municipal wireless networks, Wireless Gamepads, 2.4GHZ HAM radios, Non-802.11 Wireless Internet Services (like WiMAX), Home RF spread spectrum based network (non-802.11), Outdoor Microwave links, Fluorescent Lights/Bad Ballasts, Bad electrical connections or AC/DC power supplies, Treadmills, Wireless ceiling fan controllers and Garage Door Openers. Potential sources of noise for 5 GHz Band are: Wireless Cameras (mixed frequency video), Alarm Systems, Digital Baby Monitors, Wireless audio/video devices, Radar and Perimeters Sensors.
Potential sources of noise for 2.4GHz Band are: Microwaves, Bluetooth devices, Digital and Analog Baby Monitors, Non-DECT Cordless Phones, Wireless Cameras (mixed frequency video), Zigbee Devices, Wireless audio/video devices, Alarm systems, Harmonics from LCD displays, X10 cameras, Municipal wireless networks, Wireless Gamepads, 2.4GHZ HAM radios, Non-802.11 Wireless Internet Services (like WiMAX), Home RF spread spectrum based network (non-802.11), Outdoor Microwave links, Fluorescent Lights/Bad Ballasts, Bad electrical connections or AC/DC power supplies, Treadmills, Wireless ceiling fan controllers and Garage Door Openers.
Potential sources of noise for 5 GHz Band are: Wireless Cameras (mixed frequency video), Alarm Systems, Digital Baby Monitors, Wireless audio/video devices, Radar and Perimeters Sensors.