Zyxels highest gain sector antenna. The 18dBi EXT-118 is a decent patch antenna complete with cable and mountings. Applications consist of longer distance point to point links or highly focussed HotSpot coverage.
Zyxel antennas are good, especially this one.
Manufacturers Description
Wireless network antennas typically perform best in open environments with the least amount of obstructions possible. Performance may be significantly impaired if antennas are mounted near metal surfaces, concrete walls, or other high-density materials. To meet the challenge of these and other severe environments, Zyxel offers performance-enhancing antennas for its Zyxel family of wireless modems.
Zyxels extended reach antennas allow users to get the best wireless performance out of the most difficult environments. With Zyxel antennas, customers will enjoy greater reach and better transmission quality for their wireless networks.
Technical Specification
Frequency range: 2400 MHz - 2500 MHz
Gain: 18 dBi
VSWR: 1.5: 1 Max
Polarization: Linear, vertical
HPBW / horizontal: 30°
HPBW / vertical: 30°
Front to back ratio: 15 dB
Downtilt: 0°
Power handling: 10W (cw)
Impedance: 50 Ohms
Connector: N female
Survival wind speed: 216 km/hr
Temperature: - 40°C to +80°C
Humidity: 95% @ 25o C
Lightning protection: DC ground
Radome colour: Light gray
Radome material: ABS, UV resistant
Weight: 0.7 kg
Dimensions: 300 x 300 x 50 mm