Parabolic Grid Antenna: HyperLink HG2419G
Homepage: http://www.hyperlinktech.com
The HyperLink HG2419G is also a very high-performance tool. This high-gain, ultra-efficient antenna is extremely well-engineered. The antenna is built from durable, galvanized welded steel, and is coated with a light gray UV powdercoat, making it not only strong, but also attractive.
Hyperlink makes three versions of this antenna: a 15-dBi, a 19-dBi (the model we tested for this book), and the granddaddy of them all, a 24-dBi model. In addition to offering high gain, this antenna is also extremely selective. By offering an eight-degree beam on the 24-dBi models, the antenna minimizes interference and maximizes power. As with most directional antennas, this one is best for point-to-point links connecting multiple networks. In our tests with the HG2919G, we were able to connect to our test access point with a solid connection from well over three times the distance, on an unamplified signal, using stock antennas on the access point. Please see Figures 1.7 and 1.8 for screenshots showing signal strengths.
Figure 1.7. Base—Using the built-in antenna.
Figure 1.8. Using the HG2419G antenna.
The HG2419G can be mounted to a standard mast up to 2.5" in diameter, and the elevation can be adjusted up to fifteen degrees. This allows you to use it in a wide range of situations, and makes it optimal for rooftop mounting. With its capability to select horizontal or vertical wave patterns, high gain ratings, tight beam width, and rugged construction, this antenna is one of the best on the market.