140 mm x 70 mm Aluminium Mounting Plate, Stainless Steel, Brass and Plated Stee l Clamps. Horizontal and Vertical polarisation mounting points. Horizontal and Vertical polarisation mounting points. Horizontal and Vertical polarisation mounting points. Parabolic, Yagi and Circularly Polarised are directional antennas.
Whip antennas are for most practical purposes omni or non directional when used v ertically .
An increase in antenna gain of 3 dBi is approximately equal to doubling the transmitter output power, received signal strength or range can be increased by raising antenna gain or transmitter output power. Range can be doubled by either increasing antenna gain by 6 dBi or quadrupling the transmitter output power.