Fessenden's request for a faster, more powerful unit was assigned to Ernst F . W . Alexanderson, who in August 1906 delivered an improved model which operated at a transmitting frequency of approximately 50 kHz, although with far less power than Fessenden's rotary-spark transmitters.
32.
This was followed by tests that included, in the fall, Eugenia Farrar singing " I Love You Truly " . ( Beginning in 1904, the U . S . Navy had broadcast daily time signals and weather reports, but these employed spark transmitters, transmitting in Morse code ).
33.
He was one of the first researchers to realize, from experiments like the above, that the existing technology for producing radio waves, the spark transmitter, was not usable for amplitude modulation, and that a new kind of transmitter, one that produced sinusoidal " continuous waves ", was needed.
34.
When Reginald Fessenden contracted with the company for a steam turbine, Weagant applied for a job, and from 1908-1915 worked at Fessenden's National Electric Signaling Company's station at Brant Rock, Massachusetts, working on the design of the 100-kilowatt spark transmitter for the United States Navy's first high-power station at Arlington, Virginia.
35.
In September 1915, Reynolds, then living in Minneapolis, Minnesota, was issued his first license, for an amateur radio station with the call sign 9WH . This initial station employed a spark transmitter that could only transmit the dots-and-dashes of Morse code, moreover, with the entrance of the United States into World War One in April 1917, all civilian radio stations were ordered to cease operations for the duration of the conflict.
36.
Meanwhile, White set in motion a series of highly visible promotions for American DeForest : " Wireless Auto No . 1 " was positioned on Wall Street to " send stock quotes " using an unmuffled spark transmitter to loudly draw the attention of potential investors, in early 1904 two stations were established at Wei-hai-Wei on the Chinese mainland and aboard the Chinese steamer " SS Haimun ", which allowed war correspondent Captain Lionel James of " The Times " of London to report on the brewing Russo-Japanese War, and later that year a tower, with " DEFOREST " arrayed in lights, was erected on the grounds of the Louisiana Purchase Exposition in Saint Louis, Missouri, where the company won a gold medal for its radiotelegraph demonstrations . ( Marconi withdrew from the Exposition when he learned de Forest would be there ).
