cheapernet
Under the IEEE 802.3 10Base-2 standard, also known as Cheapernet or Thinnet, a low-cost Ethernet variant was described in the 1980s that worked with a thin coaxial cable.
Cheapernet had length and connection restrictions compared to classic Ethernet, due to the coaxial cable's attenuation of about 4.6 dB per 100 meters (Yellow Cable 1.7 dB/100 m), and used the inexpensive BNC connectors to connect adapter cards to the LAN segment.
Coaxial cable, also known as Thinwire Ethernet cable, had greater flexibility over the bulkier Yellow Cable due to its smaller diameter and simpler shielding.
However, the Cheapernet cable did not correspond to the classic RG-58 cable in all parameters. The external distinction is possible on the basis of color: the RG 58 is black, the Thinwire Ethernet cable is gray and, unlike the RG 58, has braided and foil shielding. The cable has an impedance of 50 ohms, a propagation speed of 0.65c, a diameter of 4.9 mm and a permissible attenuation of 46 dB/km. The cable is extremely flexible and features a bending radius of 5 cm.