1880: It all started with the discovery of radio waves, which soon led to the telegraph and mobile phones . 1901: A brief letter between Britain and Canada was the first wireless Transatlantic message. 1922: With the discovery of FM frequencies, as well as the portable radio, a framework was established.
Read moreWhat are the 4 categories of wireless communication?
The four types of wireless networks — wireless LAN, wireless MAN, wireless PAN and wireless WAN — differ when it comes to size, range and connectivity requirements.
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