[hpsdr] reducing computer radiated emissions

[David McQuate]

My Core 2 Duo on a Gigabyte main board in a CoolerMaster case radiates 
all sorts of junk, from somewhat noisy discrete signals to hash covering 
tens of kHz, that changes when I move the mouse, and when the DSL modem 
/ router sends out ARP queries once a second.

Mercury's input is by 20-feet of RG-58 coax, connected to a 4:1 toroidal 
balun, open-wire feed-line and an off-center-fed dipole, one end of 
which is, unfortunately, only about 20 feet from the computer.

I've placed snap-around ferrites on the power cord, ethernet cable, 
monitor cable, USB, keyboard & mouse cables, without noticeable improvement.
The ethernet cable is more than 100 feet long, the DSL modem being 
pretty far from my shack.

Have others solved this sort of problem?
What did you do?

Thanks!
73,
Dave