You mentioned Class B for industrial applications. Is the intent of Class B to hold down the amount of RFI coming out of the computer and bothering other things? Or is it more to prevent strong RFI in the environment from screwing up the computer?
I guess for ham radio we are concerned with both - I get noise in the receiver generated by the computer (and all the other assorted electronics lying around) and also have had RF get into the computer and mess up the keyboard.
