Antenna Definitions
Omnidirectional Antenna
Regular omnidirectional antennas provide equal coverage in a spherical pattern around the
antenna. For greater coverage, gain omnidirectional antennas focus radio energy
horizontally, sacrificing some coverage directly above and below the antenna. In either
case, place the antenna near the center of your coverage area, free of nearby
obstructions.
Directional Antenna
Directional antennas cover relatively long, narrow patterns in one direction. By
placing one at one end of your coverage area, you may communicate over very long
distances. Directional antennas are ideal for bridging the gap between buildings, to
extend coverage to any oddly-shaped area, or in any situation point-to-point
communications are required, such as along a long corridor.
Dual Gain Antenna
Dual gain antennas use different amplification levels for transmit and receive. Designed
specifically for ETSI-regulated countries where the maximum transmit power is limited to
100mW, the dual gain antenna amplifies a nominal amount on transmit, but a much greater
amount on receive. This increases the maximum distance over which such an antenna can
receive signals and increases their effective range for point-to-point applications. They
are useful for applications such as bridging between buildings or in installations that
are sensitive to RF signals. This is the only antenna with gain that is legal where
regulatory bodies limit radio power output to 100mW.
