Couldn't this potentially dangerously amplify ambient RF if you follow the author's advice of re-using an antenna dish & covering it with a non-conductive reflective vinyl coating?
It certainly won’t amplify anything since the only powered component is the LED.
It might concentrate RF at the focus to some degree, but only if you put your head right at the focus, and even then it’s almost certainly orders of magnitude less exposure than using a cell phone.
It might concentrate RF at the focus to some degree, but only if you put your head right at the focus, and even then it’s almost certainly orders of magnitude less exposure than using a cell phone.