( I ) Product Overview Nominal frequency :L1: 1575.42±1.023 (MHz) L5: 1176.45±12 (MHz) Center frequency (with adhesive tape on 27 square ground Plane): L1: 1577±2.5 (MHz) L5: 1176±2.5(MHz) -10dB Bandwidth min:L1: 10(MHz) L5: 3 (MHz) VSWR at CF max:1.8 Gain at Zenith:L1: 1.8dBi Typ L5: 0.5dBi Typ Polarization Model:RHCP Impedance:50 (Ω) Frequency Temperature Coefficient max:20(ppm/deg.℃)