RF signal interference is an interruption to a wireless connection caused by a nearby source of radio energy. This interference disrupts a device’s normal operation and can cause a decrease in performance or may even cause the device to fail. RF interference can come from a variety of sources, including other wireless devices, power lines, electrical equipment, and even weather conditions.
An unexpectedly poor SNR (signal-to-noise ratio) could be due to interference. If calculations have suggested a good SNR, but they do not match reality, it is important to establish why. Spectrum interference is ubiquitous; therefore, spectrum monitoring should establish the cause of the interference.