5.8G Left Hand Polarized Spiral Aerial Monopole Directional Helical Antenna Square Copper Base For FPV SystemThe product is shipped based on the color or size of the main image of the product page.Description:Circularly polarized antenna with its big advantages in the wireless field plays an important role. Linearly polarized wave transmission environment is easy to cause deflection of the polarization decay, the circularly polarized wave encounters an obstacle in the reverse direction, because of the direct wave and the reflected wave have polarization isolation, the circularly polarized wave has a strong ability of anti-interference ability and anti-fog.Transparent antenna shell, clear to see its technologySpecifications:Gain: Copper Square Bottom Spiral: 16DBiDirectivity: DirectionalBest for: For video receiver.Package included:1 x 5.8G Left Hand Polarized Spiral Aerial1 x Extension cable