Where did you buy it? I wonder if it's fake. I've never seen a Stanley be bad. Not that they're amazing, but this is pretty bad.

My point is that the phones would interfere with the speakers used for the pilots' radios. I'm not sure if it was the speakers themselves, the radio part, or just because all of that was more sensitive, but I know that pilots were complaining about it.

It's also partially a hold-out from older tech cell phones that definitely used to interfere. I used to have a cell phone around 2005 that if placed anywhere near a speaker that was powered up but not transmitting audio, would cause noticable interference any time there was a phone call coming in. I could tell my phone was about to ring about 1 full second before it actually rung. I've been told that pilots around that time were having similar issues, but it seems like that's not the case anymore.