What are the FCC emission standards for EMI regulation?
Today, FCC regulations are primarily concerned with peak emissions at any given frequency, not the average emissions over a given frequency spectrum. Thus, a circuit designer should focus their EMI design efforts with reducing the peak emissions at any given frequency within the frequency spectrum, not the overall average emissions within the spectrum. Figure 2 shows a FCC Class B plot of power (dBµV/m) versus frequency (MHz) for the peak emission requirements (at 10 meters).
