My toner has picked up music playing on return air vents that were metal all of the way back to the unit.
I don't have an absolute reason why but I do know that it has never effected my LAN lines in an installation even though I could "hear music" when toning them out.
Every day is a good day.......some are just better than others!
Proud to say that my property is protected by a high speed wireless device!
