The X-AIR 5.8 MK. II is TrueRC's latest redesign of the X-AIR 5.8GHz antenna. This antenna features aerospace-grade PCB material and the latest computer-aided engineering. The MK. II is almost 1/4 of the original X-AIR and about the same wide coverage. The high axial ratio makes it perfect for far off venture without antenna aiming adjustment.SpecificationsBandwidth: 5.1GHz-6.7GHzGain: 9.5-10.5 dBicPolarization: RHCP or LHCPBeam-width*: 120degBeam-width @-3dB**: 68deg. Connector: SMA maleDimension: 32 x 32 x 16mmNote: 45deg SMA or RP-SMA adapter is not included.*Coverage where reception is at least equivalent to an Omni.**Coverage where at least 70% of the max range is obtained.Includes1 x TrueRC X-AIR MK. II 5.8GHz Antenna - RHCP