On December 23, 1900 Canadian-American physicistReginald A. Fessenden was the first to transmit human speech over radio waves using a spark-gap transmitter atBrant Rock, MA.
He said --
“One, two, three, four, is it snowing where you are Mr. Thiessen? If it is, would you telegraph back to me?”
Mr. Thiessen, one mile way, heard the transmission.
Mr. Fessenden’s voice was the first ever to be transmitted by radio waves and heard by another person.