Hello Dennis. Well first – you’ve mentioned if old ballast were removed. So my question is before I replace the lights and you used old tubes with old magnetic ballasts did we have RFI problem? If not then probably new lights cause the problem. When I install new LED strips I cut off old magnetic ballasts inside fixtures and connect LED strips directly from power wires inside the fixtures to LED strip using power cord included as accessories with LED strips. Each LED strip has a small ballast (called “driver”) inside each strip. I just finished chatting with a technical support and already purchased a “RFI EMI noise cable clips”. I’m going to install them this Saturday and will see if the RFI problem stop. Petr