well to be specific with my setup in case you're interested in reviewing in your lab...
<tablet>---2ft---<crack>---2ft---<ap>
- audio cables are UNplugged.
- headphones (sennhd650) plugged in
- tablet (ipad3) speakers off
- everything is sitting on a glass desk
- AP is 3 antenna. different settings like 2.4ghz(G) vs 5(N) and channel settings make little difference.
- position of tablet/AP doesnt really matter since its all broadcast anyway.
i hear noise relative to the current level of activity in the video being viewed on the tablet. turning off the tablet immediately stops the noise... what ill do next is find some block of copper or aluminum and position it inbetween the AP and crack entirely then just the tube(s) to narrow down a solution.
do you have any vendor recommendations or sell shielding directly yourself?