ウェブ10BASE5. 10BASE5 (also known as thick Ethernet or thicknet) was the first commercially available variant of Ethernet. The technology was standardized in 1982 [1] as IEEE 802.3. 10BASE5 uses a thick and stiff coaxial cable [2] up to 500 meters (1,600 ft) in length. Up to 100 stations can be connected to the cable using vampire taps and share a ...