My modem is cranking out some bad RFI thru the phone line. I cant even listen to the radio in my car when I pull into the garage when the computer is turned on. I have checked ground and I have positively identified it as the modem. Will a regular telephone RFI filter work if the modem is the source? If not, then what do I do besides throw out the modem and get a new one? Thanks all. Tom KD5TIE