Features:1) High sensitivity2) 20Ch all in view tracking3) Fast position fixed, cold start: 3) Noise figure: 1.6dB max. (+25±5 degrees), 2.5dB max. (+85 degrees)4) Out of band rejection: 1,575.42±50MHz (25dB type), ±100MHz (35dB type)5) Reverse isolation: 50dB type 6) Output impedance: 50 ohmsInner packing:Gift box producing area:China