Specification. Axial ratio 1.5 Antenna directivity 2.2d Bi Radiation efficiency 85% Center frequency 5.8 G Hz Bandwidth 500 M Hz (5.6-6.1 G Hz) Matching VSWR (;1.2d B (at Center frequency) Diameter Ø16mmx 18.6mm Weight 4.3g Material plastic cover Connector SMA male Polarization RHCP/LHCP..