The true genius of these types of products is the shopper fills in the blanks in the information with what they imagine it is doing.That seems to be in contradiction with what they state in the manual (as quoted in my first post). So we can assume this thing only works powered but has some limited storage capacity. What could it possibly do? Analyze the received high frequencies, and then what? How do you then "attenuate" them? Does it work like a scrambling device? But outside wifi and cellular frequencies, as users report that it does not interfere with those ?