The unit handles up to 150 watts and is commonly used in demanding mobile wireless networking, fixed-site installation, and land mobile radio. The Mobile Mark Y42400WB wideband Log Periodic UHF Yagi antenna offers an excellent VSWR less than 1.5:1 over 400 to 800 MHz at 9 dBi gain. VSWR greater than 3:1 makes an antenna extremely inefficient.

Operating outside that frequency increases the VSWR and reduces efficiency dramatically. Yagi antennas are most efficient - measured by the ratio of radiated power to input power applied to the antenna feed point - when they operate at resonance.

Others offer coverage of bands between 200 - 250 MHz, 320 - 340 MHz, 406 - 512 MHz, 440 - 480 MHz, 698 - 930 MHz, 806 - 960 MHz, 866 - 960 MHz, and 900 - 930 MHz - which gives you options for virtually any application. You’ll find dual-band yagi antenna models designed for Wi-Fi that cover both the 2.4 and 5 GHz bands. Westward Sales offers more than a dozen Yagi antennas that cover the most in-demand frequency bands. With gain typically in the 8 to 12 dBi range, the Yagi antenna will pull in signals from the tower and send outgoing signals to it to improve cell phone communications. For instance, if you need to increase cell phone signal strength within a building, install an outdoor Yagi antenna and aim it at the nearest cell tower. They’re economical and suited for outdoor installation. When you need a highly directional antenna with substantial gain, Yagi antennas are the choice. Yagi antennas usually have a narrow bandwidth, which means they are efficient only over a small range of frequencies. Together they work to produce waves of RF energy focused in a particular direction. Yagi directional antennas have a driven element, a dipole, with several coupled parasitic elements known as reflectors and directors. Yagi antennas are highly directional and made of several short elements mounted across an insulated support.

Build yagi antenna wifi antenna