While out in the field I noticed that when there is 802.11 activity on some of the upper UNII-3 channels a ghost of the signal appears down in the UNII-1 range.
Once I got back to the office, we fired up our trusty Agilent spectrum analyzer to see if we could duplicate the situation. The WiSpy clearly shows these ghost signals but the Agilent does not.
Unfortunately for my good friends at Metageek, I must trust the Agilent over the WiSpy.
Tried to upload a sample recording of these false readings, but it fails. The file is 2.3MB, and the uploader says that the max file size to upload is 9.54MB. If someone at Metageek wants to get the recording, send me an email so that you can see this incorrect output and hopefully fix it in a future release.