I should imagine that it would be quite illuminating to get hold of a Frequency Scanner and spend a couple of hours wandering around the hospital (any hospital). Could be a whole new career opportunity for so-called "consultants":- auditing the airways!
I remember we once did something similar, but with magnetic fields. We were worried about possible interaction between the planned MRI and the elevators! Drawings were made showing the mysterious (to the lay-person, aka architects, that is) "lines-of-force". Of course, the (expensive) Faraday cage was the solution.
