Besides having my Boom and Shake in the poorest place there is (a lot of traffic of all kinds, cars, trucks, planes, trains, you name it) it looks like I also have problem with a lot of RF that I can’t seem to get away from. i tried a heavy steel electrical cover and aluminum foil and it didn’t help. According to the install guide, it says if all else fails, try a better quality Ethernet cable. The question is, which Ethernet cable would provide better shielding than the one that came with the Boom? My ID is RBED8 for the Boom and R6458 for the Shake if you want to take a look.
“Generally, if the spurious tones exist, move the system away from any generators (wireless phones, cell phones, modems, microwave ovens, …). If that does not work, enclose the system in a metal box. If that still does not help, replace the Ethernet cable with a higher quality one.”