Unknown transmitters and sources of RF interference pose the biggest threat to a wireless network. An RF spectrum analyzer is the tool of choice to monitor, detect and track-down undesirable sources of RF interference. An RF spectrum analyzer is the only instrument capable of measuring raw RF energy. Also, a brief introduction to Wifi Logix — a new, handheld tool that uses an 802.11 chip to determine the “best” channel, based on available throughput.