Here's a good link on grounding. The primary focus is lightning, but it's
still good:

http://www.polyphaser.com/ppc_PEN1016.asp


"Tim Shoppa" wrote in message
om...
(Tim Shoppa) wrote in message
. com...
I've got a few PC's in nice metal cases. I can actually run most of my
receivers near the PC without too much problem, as long as the receiver
is
powered by batteries. But the instant I hook my sound card to the
receiver,
or I run the receiver off of AC power, all the SW bands are filled with
S9 hash generated by the computer and network equipment.

The RX-320 arrived Thursday, I hooked it up to the PC and got nothing
but hash all over the bands. Then I looked at the ground my AC house
wiring is hooked to (it's about a 40 foot run of wire from the AC
entrance panel to the cold water pipe! Maybe it was technically compliant
with the NEC when the house was built but it wasn't worth crap...) and
decided I had to be able to do better. So I went to Home Depot,
invested about $10 in some 1/2" copper pipe, and drove several 5-foot
lengths near a handy window.

Using this ground makes a world of difference. All the nasty noise
went away. I learned my lesson!

Tim.