[blackguardx]

The clause about accepting interference means that the device must not fail when recieving interference in a way that would cause it to radiate on another frequency. Product functional failure otherwise is not regulated in the US. The FCC doesn't care if your product bricks itself as long as it doesn't jam the spectrum.

I've been through this testing before. They blast your device with many different frequecies and measure what comes out.

The test was harder to pass in the old days when there many discrete mixers inside radios and poor isolation between the RX and TX paths through the duplexer.