My brothers business card calls him a “Senior Test engineer”
At work he has a lab that is set up with not only frequency generators but also one of every cell phone, router or anything else he can think of that will generate a signal.That’s so he can make sure that the product his company makes isn’t interfered with by anything else.
He swore to me that he can bring in a hot cup of coffee in the morning leave it untouched all day and it’ll still be hot at the end of eight hours
Tell him to turn the AC on.