One hundred years ago in 1912 a new type of 5 KW wireless was introduced. It had a spinning wheel with arcing contacts that broke the sparking RF circuit up into audio pulses. It modulated the AM band radio frequency signal.
The system transmitted a beep beep beep instead of a crackle crackle crackle. It was easy to hear and the sound of the signal was much different from other natural sources of RF static. Those signals are out there just now at 100 light years in 2012. Will we soon be getting a reply? Frank Znidarsic
