Coaxial cables are now most popularly used for tv and internet connections in domestic setups. There is a variety of coaxial cable types available with slight differences in basic design which can alter the application.
Coaxial cables vs other cables
The most popular alternatives of coaxial cable in the market are either twisted pair or fiber optic. Coaxial cables are a popular choice because of their durability and easy installation as compared to more expensive modern fiber optic. However, they do have shortcomings, for example, longer coaxial cable experience more signal loss. However, they are better shielded from electromagnetic interference as compared to the cheaper option of twisted pair wires.
Basic design of coaxial cable
Basically, a coaxial cable has a core cylindrical conductor (usually copper) which has all other layers wrapped around it with a common axial point. The conductor is surrounded by a dielectric plastic insulator to prevent signal loss. Next is the braided layer of copper mesh which helps shield the signals from electromagnetic interference. Finally, all these layers are encapsulated in PVC plastic jackets to protect from any external or environmental damage. The difference in the thickness of each layer can make the difference in the cost and application of the coaxial cable.
Buying the correct coaxial cable
Before being concerned about the quality of cable you are purchasing you need to think about the type of coaxial cable you need to buy. The cable-type you need greatly depends upon the application you need it for. You will need to consider factors like impedance, ohms, and connections.
LMR195, LMR 240, and LMR400 are the 50-ohm coax cables with F-type connectors. They are thin cables, popularly used for short feeder runs outdoor installations, and have a double shield, and Black PE jacket. The main difference between the LMR195, LMR 240, and LMR400 is thickness or diameter, flexibility, and the maximum distance they will transmit up to.
LMR 600 and LMR 1200 are extremely thick coax cables used for outdoor or industrial installations. They are low loss 50ohm cable with N-type connectors and are recommended for over 150 transmission coverage requirements. They are ideal for jumper assemblies in wireless communications. These are better and tougher cables for heavier transmission load and rougher outdoor environments.
Installation of cables in the system
To establish a successful system or assembly the key is the installation of coaxial cables and connectors. Depending upon your assembly you will need to research the type of cable required, suitable connectors, and tools to install cables and connectors to establish the connection.
You will require to map to route and measure the length of the coaxial cable required. This will also guide you about the most suitable type of cable for you. Remember to add a few extra inches to cable length to account for turns and other possible stretches. Each cable type has a different set of connectors that will be installed on both ends of the cable. The most popular connectors used with coaxial cables are F-type, N-type, and BNC connectors. Here is a guide on how to install a connector on a coaxial cable. Time microwave cables are the best quality cables available in the market.