Coaxial cables can be divided into baseband coaxial cables and broadband coaxial cables (that is, network coaxial cables and video coaxial cables) in terms of usage. Coaxial cables are divided into 50Ω baseband cables and 75Ω broadband cables. Baseband cables are divided into thin coaxial cables and thick coaxial cables. The baseband cable is only used for digital transmission, and the data rate can reach 10Mbps. Coaxial cables are divided into thin cable RG-58 and thick cable RG-11. And uncommon semi-rigid coaxial cables and feeders.
The diameter of the thin cable is 0.26 cm, and the maximum transmission distance is 185 meters. When in use, it is connected with a 50Ω terminal resistor, T-connector, BNC connector, and network card. The wire price and the cost of the connector are relatively cheap, and there is no need to purchase hubs and other equipment, which is very suitable for setting up a small Ethernet network with relatively concentrated terminal equipment. The total cable length should not exceed 185 meters, otherwise, the signal will be seriously attenuated. The impedance of the thin cable is 50Ω.
The diameter of the thick cable (RG-11) is 1.27 cm, and the maximum transmission distance is 500 meters. Due to its relatively thick diameter, it has poor elasticity and is not suitable for installation in a narrow indoor environment. Moreover, the production method of the RG-11 connector is relatively more complicated and cannot be directly connected to a computer. It needs to be converted into an AUI connector through an adapter and then connected to the computer. Because the thick cable is stronger and the maximum transmission distance is longer than the thin cable, the main purpose of the thick cable is to play the role of the network backbone, connecting several networks formed by thin cables. The impedance of the thick cable is 75Ω.
This kind of cable is rarely used and is usually used to connect the module inside the communication transmitter. The transmission loss of this kind of line is very small, but it also has some disadvantages, such as high hardness and not easy to bend. Besides, the transmission frequency of such cables is extremely high, and most of them can reach 30Ghz. At present, the process is gradually improving, and some such wires with larger bending amplitudes have appeared. However, it is recommended to use semi-rigid coax cables with traditional copper tube outer conductors where flexibility is not required to ensure stability.
As a professional coaxial cable manufacturer in China, Hongsen Cable, whether you need thin cable, thick cable or semi-rigid coaxial cable, we can meet your needs. Contact us now and let us help you solve your coaxial cable procurement related issues.