Sure but then you have a targeting problem, which in the radio range is not trivial particularly when you've got intervening objects and no receiver providing feedback about signal strength.
Further if you knew what you were trying to do, you could set up your feedback transmitter in a room, record all the parameters for that room, then move to the next room, Etc.
The problem that Perlman was solving was a lot harder (a moving target) but hitting a nominally stationary target?