You're correct, seems memory failed me on that one. Been while since I had seen it and misremembered . As to the intent of reply that the broadcast station should have been aware of the concept of using reflected radio waves, the rest of my reply is most certainly correct, and via the same of using precision timing, return strength, triangulation, etc. The details of the distant object can be determined and is not a new thing.

Well even an old episode of the Big Bang theory they portrayed bouncing a signal off the moon and timing it. It's the very basis for radar. Using a radio signal to determine an objects distance, speed, altitude, size, and direction of travel. Same thing their weather radar uses. So yeah, they should have know.

New to you, sure. But even Australia has very active ham radio operators who pursue using bounce/ reflected propagation.

This is somehow new? Ham radio operators of been using signal bounce for decades. EME (earth-moon-earth) , meteor scatter, aircraft. Buildings, etc.