December 23, 1900 he transmitted his own voice over the first wireless telephone from Cobb Island in Washington DC.

December 23, 1900 he transmitted his own voice over the first wireless telephone from Cobb Island in Washington DC.

December 23, 1900 he transmitted his own voice over the first wireless telephone from Cobb Island in Washington DC.









a. Guglielmo Marconi
b. Lee De Forest
c. Nathan B. Stubbefield
d. Reginald Fessenden










Answer: D