Ryan Woodings, Chief Geek at MetaGeek, LLC kindly donated a Wi-Spy 2.4x spectrum analyzer to me, thus allowing me to work on getting it supported in FreeBSD like I did with their earlier product. Thanks!
I must say, the Wi-Spy 2.4x simply rocks. It’s resolution is much better (3x) than that of 1st generation Wi-Spy and the external antenna is of course a nice addition as well. Below is a photo of my two Wi-Spys for comparison.
Here’s a screenshot of the current development version of spectrum-tools (formerly wispy-tools). The top graph is from my new Wi-Spy 2.4x, the bottom graph is from my 1st generation Wi-Spy – you can clearly see the improved resolution and amplitude range of the Wi-Spy 2.4x.
The yellow line is the current signal level, the green is the average signal level and the blue is the peak signal level.
My patch which adds support for the Wi-Spy 2.4x to the FreeBSD kernel can be found in usb/116057.