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An Illustrated Guide to Mobile Technology pdf pdf

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Figure 6: Graphic from Thomas Edison’s 1891 United States patent application # 465,971 illustrating ameans to do radio frequency communication between ships and between ship and shore.
Figure 8: Radio transmission (red arrow) by Marconi in 1898 from his first permanent station on the Isleof Wight, England to Bournemouth, England over a distance of 22 Kilometers.
Figure 10: A schematic of spark gap based radio frequency transmitter of the kind used by Marconi toperform telegraphic transmissions.
Figure 12: Reginald Aubrey Fessenden (1866-1932)
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