[linux-audio-user] Radio Interference problems when recording

[jmacdermott at dopd.com]

This is a bit OT, but since I do all my recording on Linux machines, I thought
I'd see if anyone on the list can help...

I used to do all my recording in a basement, but since we've moved I got a new
computer setup in our finished attic.  64studio is loaded on it (and works
GREAT out of the box on my HP Athlon 64), and everything was working
tickety-boo, audio running in and out of my M-Audio 1010LT via an old, beat-up,
road-weary 16-channel mixing panel.

This basic setup (different computer and distro, same sound card, cables, mics,
etc.) was working fine at the old place in the basement.  But now when I plug
my mics (ie: Shure SM58) via XLR into the panel, I hear a LOT of radio
interference.  I never used to get any of this.

My first thought is that the location (way up in the air) is what is causing it.
 I already tried the cheapest/quickest/easiest fix, new cables.  That made no
change.

I will try plugging the unit into another outlet and see if that helps.  I have
the following questions for the more experienced readers on the list:

1) Could it be my beat-up old board?  Does a newer, better board (ie: modern
Mackie, etc.) have fewer problems with RF?  (I know it would be quieter!)

2) I'm afraid that the RF might be coming through the power lines.  Any tips on
eliminating this?

3) Is the location of my equipment (3rd storey attic) an issue?  Any way around
this without shielding the entire roof?  :-P

Thanks for any help!  Jay