WirelessMon Main Window
Main Window with MetaGeek Wi-Spy: This shows the signal level is quite high on channel 1 even though there are no access points, the culprit appears to be a wireless video camera in an adjacent office.
WirelessMon Map Window
The graph window
Glenn Fleischman explains in his Ars Technica article the affordable ways of understanding the airspace around your wireless networks. One of the products featured in the article is Wi-Spy DBx and it's dual band ability to find interference beyond Wi-Fi. Thanks Glenn!
We got word from our buddies at Visiwave that Wi-Spy DBx has been integrated for use into their Site Survey software with great success. So, now you can analyze RF interference locations for the 802.11a/n spectrum just like the 802.11b/g spectrum that VisiWave has long supported. Check it out: http://www.visiwave.com/index.php/ScrInfoWiSpy.html