Potential Causes of Wi-Fi Interference
Anything that operates wirelessly on a 2.4GHz or 5GHz frequency has the potential to cause interference with your wireless devices. The following is a list of common offenders found in most households:
Microwave Ovens: The use of microwave ovens near your computer, Wi-Fi router or other wireless devices may cause interference.
Cordless Phones : When on a call a cordless phone that operates on a 2.4GHz or 5GHz frequency can cause interference for wireless devices and networks.
All Wireless Devices: Any wireless devices that operate on a 2.4GHz or 5GHz bandwidth can cause interference with your other wireless devices. This can include security systems, wireless speakers, baby monitors, Bluetooth earpieces, garage door openers or other Wi-Fi devices.
Some External Monitors: Some display screens or external monitors can emit harmonic interference – primarily on the 2.4GHz band between channels 11 and 14. If experiencing an issue with this try changing the access point to use 5GHZ or a lower 2.4GHz channel.
Direct Satellite Service: The coax cable and connectors used with satellite dishes can cause radio frequency interference (RF leakage) if damaged. If you’re experiencing interference and your cables display signs of tampering, try replacing the cables.
Wireless Barriers
Some materials can become barriers to the performance of your wireless device. To ensure a fully functioning wireless system you may need to consider the placement of your system or receiver in relation to the following materials:
| Barrier | Level of Potential Interference |
| Wood | Low |
| Synthetic material | Low |
| Glass | Low |
| Water | Medium |
| Bricks | Medium |
| Marble | Medium |
| Plaster | High |
| Concrete | High |
| Metal | Very High |
