Send us Fan Mail Perfect-looking terminations and clean certification results can still hide the interference that slows networks weeks later. We break down EMI, RFI, and crosstalk in plain terms, then lay out the practical install rules that protect performance and your reputation. • why EMI is invisible but disruptive to Ethernet signals • common EMI sources on job sites, from lights to motors to transformers • the real cost of downtime and why customers only remember perf...