John and John, the RFI is known to be a problem with the tyoe of power supply current source method ( switcher?) for LEDs…..its prob not the LEDs, as they run on DC.
As Petr briefed some of us, the LED strips he got do not need any legacy “ballast”, & I’m not sure if the old ballasts were removed. The web forums out there discuss RFI for the scenario in detail. AM systems (AV radios) more affected than legacy FM systems ( police/fire/EMT).