Spectrum Analysis

Possibly Bluetooth? Its something FHSS

Bluetooth devices communicate using low-power radio waves on a frequency band between 2.400 GHz and 2.483.5 GHz

Hmmm. Definitely Bluetooth. Headphones playing Beat106. That might do it.

 

802.11g                                                                    802.11ac??                                                                                                         802.11b