The 5.8 GHz omnidirectional antenna is perfect for your FPV racing copter. The design is very and specially designed to withstand harsh crashes and protect the antenna. The pressed root of the antenna ensures that it does not break from the antenna's connection end. The protective case is made of virtually unbreakable material to maintain the antenna's shape without deformation. The bright color makes it easy to spot the copter in a crash, especially in tall grass or in! Center frequency: 5.8 GHz Bandwidth: 500 MHz (5.55-6.05 GHz) Matching: S11 Less than -20 dB, VSWR Less than 1.22 (at center frequency) Axial ratio: Less than 1.3 Radiation efficiency: 95% Color: black Material: plastic + metal Size: Length: approx. 85 mm Package contents: 2 x FPV Flat Panel Pagoda Antenna (Hole) Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture to differ slightly from the real thing. The allowed measurement error is +/- 1-3 cm.