I just got a refurbished Dell D505 with XP Pro to handle some of my legacy programs that wont run on this 64-bit Win7 OS. The PA-10 PS with it puts out a lot of trash 50-150 MHz (and probably elsewhere). What ferrites (material, size) and number of turns thru would be the best bet on its cords to reduce/eliminate that RFI ? 73, Pat - WA5IYX