There are two types of antennas, directional and Omni-directional.
Omni directional antennas provide a 360° donut shaped radiation pattern to provide the widest possible signal coverage in indoor and outdoor wireless applications. An analogy for the radiation pattern would be how an un-shaded incandescent light bulb illuminates a room. Types of Omni directional antennas include "rubber duck" antennas often found on access points and routers, Omni antennas found outdoors, and antenna arrays used on cellular towers.
Directional antennas, as the name implies, focus the wireless signal in a specific direction resulting in a limited coverage area. An analogy for the radiation pattern would be how a vehicle head light illuminates the road. Types of Directional antennas include Yagi, Parabolic grid, patch and panel antennas.
Directional antennas are primarily used for point to point communications including long range connectivity applications between two facilities or devices.
The range of a directional antenna depends on the gain (dBi) of the antenna, Line of Sight (LOS) conditions, antenna frequency; transmit power of the connected radio, weather conditions and the presence and severity of EMI and RFI.
Directional antennas are used in commercial, industrial and military applications typically outdoors where harsh weather conditions are present.
L-com manufactures directional antennas with harsh environments in mind. We offer UV-stable, UL flame rated radome covered directional antennas as well as non-radome stainless steel directional antennas designed to stand up to the extremes. Other features include rugged mast mounting kits designed to stand up to high winds and vibration and drain holes in the radome versions for moisture control.
Single mode cables have a small diameter 9 micron core allowing one pathway of light. Multimode cables have two different large diameter core sizes 50 and 62.5 micron allowing multiple pathways of light.
VPI, (Video Products Inc.), offer a full range of RJ45 Connector Covers.
All VPI connector covers and anti-dust caps protect cable ends and ports from physical damage, dust,dirt, grime and liquid, when not in use. They are compatible with standard RJ45 ports.
The ENVIROMUX® Remote Power Reboot Switch allows you to remotely reboot and control power (on/off) to a server or other powered device over IP. The Easy-to-use web interface makes controlling power from anywhere in the world child's play.