Another note.
I was reading this very helpful thread:
http://forum.sounddomain.com/forum/u...c;f=5;t=008251
I now also think that powering the car antenna amp with the accessory on may also possibly cause noise? How many amps do you think it draws? I was possibly thinking of powering it with the PC power supply.
Another thing I might do is ground the dlink unit to the grounding distro block.