How much do you know about RF coaxial cable and what common types do you know about it? In the following, the coaxial connector factory will focus on popularizing some common types of RF coaxial cable for you. I hope that after our explanation, you Can have a deeper understanding of RF coaxial cables.
There are many different types of coaxial cable products that support a wide range of professional applications, such as satellite communications, industrial, military, and marine applications. The three most common types of non-industrial coaxial cables are RG6, RG11, and RG59, of which RG6 is most commonly used in CCTV and CATV applications in corporate environments. The center conductor of RG11 is thicker than RG6, which means that its insertion loss is lower and the signal transmission distance is longer. As everyone knows, the thicker RG11 cable costs more and is not easy to bend, which makes it not suitable for deployment in the house, but more suitable for long-distance outdoor installation or straight backbone links. RG59 is more flexible than RG6, but its loss is higher. Except for low-bandwidth, low-frequency analog video applications (rear-view cameras in automobiles) with short distances and limited wiring space, it is rarely used for other applications.
The impedance is also different-generally 50, 75, and 93Ω. 50 Ω coaxial cable has high power handling capability and is mainly used for radio transmitters, such as amateur radio equipment, civil band radio (CB), and walkie-talkies. The 75Ω cable can maintain the signal strength well and is mainly used to connect various types of receiving equipment, such as cable television (CATV) receivers, high-definition televisions, and digital video recorders. The 93Ω coaxial cable was used as an IBM mainframe network in the 1970s and early 1980s, and it was rarely used and expensive. Although the 75 Ω coaxial cable impedance is most commonly encountered in most applications nowadays, it should be noted that all components in the coaxial cable system should have the same impedance to prevent occurrences at the connection point that may cause signal loss And reduce the internal reflection of the video quality.
The digital signal 3 (DS3) signal used for the central office (also known as the T3 line) transmission service also uses a coaxial cable, including 75Ω. The 735 type cable has a coverage distance of up to 69 meters, while the 734 type cable has a coverage distance of up to 137 meters. RG6 cable can also be used to transmit DS3 signals, but the coverage distance is shorter.