Specifications Operating Voltage Range : 3.5~5 V DC (for active antenna) Operating Current Range : 8~14 mA @ 5 V DC (for active antenna) Frequency : 1575.42MHz ± 1.023 MHz Amplifier Gain : 3 & 29 dB ± 2 dB Bandwidth : 45 MHz @ 3 dB Noise Limiter : 1.5 dB VSWR : <1.8 @ 1575.42 MHz Câble : RG-174/U @ 3 M Connector : SMA Male or customized Antenna Polarization : Dextrorotation Circularity Polarization