discovered and first produced radio waves in 1888 and by 1894 the modern way to
send a message over telegraph wires was first conducted. Marconi sent and received signals up to two
miles using radio waves. Marconi became
known as the “father of radio”. By 1899,
Marconi sent a signal nine miles across the
During World War II, the United
States Army first used radio signals for data transmission. This
inspired a group of researchers in 1971 at the
The first generation of WLAN technology used an unlicensed band (902-928 MHz ISM), which later became crowded with interference from small appliances and industrial machinery. A spread spectrum was used to minimize this interference, which operated at 500 kilobits per second. The second generation of WLAN technology was four times faster and operating at 2Mbps per second. Third generation WLAN technology operates on the same band as the second generation and we currently use it today.
In 1990, the IEEE 802 Executive Committee established the 802.11 Working Group to create a wireless local area network (WLAN) standard. The standard specified an operating frequency in the 2.4GHz ISM band. In 1997 the group approved IEEE 802.11 as the world's first WLAN standard with data rates of 1 and 2 Mbps.
Compiled by: Tammie Runnels (October, 2005)