For those who do not know what wi-spy is, it is a usb wireless network card which is bundled with software that helps you analyze all wireless channels for noise. Then you pick which one has the least, ensuring that you wireless network is running on the "best" channel. The original cost $200 - in comparison to any other wireless spectrum analyzers it was thousands of dollars less.

Wi-Spy 2.4x now has an external antenna with higher gain, better frequency resolution and a slightly increased frequency scanning range. And with a price tag of............ about $400.