Classification of coaxial cables

1、According to the impedance, it can be divided into 50 ohms (RG8/RG58/RG-11), 75 ohms (RG-11), 93 ohms (RG62).

2, according to the diameter of the cable, can be divided into coarse and fine cable.

Coarse cable is less flexible because of its thicker diameter, and is suitable for larger local networks, which have a long standard distance (maximum transmission distance up to 500 meters) and high reliability.

Because the installation does not need to cut the cable, so you can flexibly adjust the computer access location as needed, but the thick cable network must be installed transceiver cable, installation is difficult, so the overall cost is high.

The installation of fine cable is simpler and less expensive, but since the cable has to be cut off during installation, the basic network connector (BNC) has to be installed at both ends and then connected to both ends of the T-connector, so when there are many connectors, it is easy to produce bad hidden problems, which is one of the most common failures of Ethernet in operation.

3、According to the transmission mode, it can be divided into baseband coaxial cable and broadband coaxial cable.

Baseband coaxial cable: used for data transmission, within 1Km, the rate can reach 1-2Gb/s.

Broadband coaxial cable: used for 300MHz~750MHz analog signal transmission (FDM).

One of the main differences between broadband and baseband systems is that broadband systems require analog amplifiers to periodically strengthen the signal because of the wide area covered.

These amplifiers can transmit signals in one direction only, so packets of messages cannot be transmitted in the reverse direction between computers if there are amplifiers between computers. The cable is poor, but it has the advantage of having been widely installed.

4, according to the use, can be divided into cable, wireless access to the feeder, broadband data network.