A Guide To Antenna Cables

Antenna cables have been used to describe a cable designed to provide RF coverage

in enclosed or confined areas where point-source antennas are not practical. These cables have been used as a way to provide RF coverage for two-way radio, paging, cellular and, most importantly, radio communications for police and emergency workers in the event of an accident or fire within a tunnel or enclosed area.

An antenna cable is a type of coaxial (coax) cable, which is a cable with a copper central core and several layers of insulation. The primary function of an antenna cable is to transfer audio and video broadcasting signals. One of the foremost purposes of any antenna cable is to deliver a good international quality level output.

When planning a network that incorporates wireless, varying facility sizes, construction materials, distance between transmission points and physical obstructions must be accounted for. With both directional and omni-directional antennas (also referred to as range extenders), low-loss cables, mounting hardware, and other accessories, installers can customize a wireless solution that meets the requirements of even the most challenging applications.

Pluralities of antenna cables are provided that extend between the building and the various antennae. Each cable extends preferably from an antenna to a security area of a building via an antenna portal. Each security area has at least one antenna cable that extends to it and each security area has telecommunication equipment that is connected to one of the antenna cables.

The importance of using a low-loss antenna cable is often overlooked. The signal loss in an antenna cable (dB) can cause a huge reduction in efficiency. For every 3 dB lost in the antenna cable, the transmitter power will be reduced to half before reaching the antenna.

It is important that the insulation on the antenna cable does not become cut or nicked during the installation procedure. (Damage to the cable can allow water to wick up into the antenna housing, causing the antenna to fail and preventing the tuner from operating.) Do not route or pull the cable against sharp edges or around sharp corners. The antenna cables can be different lengths so aim to get an antenna cable that is the right length for the job.

by: Chris Cowper

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