I have a client that gets an SNR of 12 and then 20 min later will get an SNR above 40? He is science proff and his office is near some kind of lab. He nor I are sure if anything in that lab is producing RF but it just seems odd. There are 6 other clients associated to the same AP and they are averaging an SNR of 32. Is there a tool that can pin point RF out put by device?