I am interested in testing RFI originating from LED T8 replacement bulbs, which are seated in troffers. Original ballasts have been removed from the troopers. Is there a simple test that can be performed without special test equipment? The goal is not necessarily gain a quantitive measurement, but to understand if and what frequency bands are impacted.
The issue is not critical (yet), however, I would like to know if there are simple / inexpensive methods to test. I am seeking tests that can be performed with equipment under $100. I would think that the most important spectrum to guard are the cellular and wifi bands: a UBNT Nanostation might be repurposed.