The antennas contains a high performance GPS patch antenna and a high tech low noise amplifier; Provides excellent signal amplification and out-band-rejection for the receiver. Features:  1. Using dedicated filters for efficient signal transmission and high precision.  2. It adopts dual LNA two-stage amplifier, which has good signal strength and supports multiple devices at the same time. The broadband input is 1575-1602MHZ. 3.USB port GPS receiver. Can be used for common smart mobile phone, laptop, desktop computer, tablet  PC etc. 4. Easy installation. Simple operation, only the relevant interface is plugged, turn on the power.  5. With magnetic mounting base. Specifications: Center Frequency: 1575.42MHZ±1MHZ Bandwidth (MHz): 10MHZ Input Impendence (Ω): 50 V.S.W.R: ≤ 1.5 Consumption Electric: <10mA Polarization Intensity: R.H.C.P Supply Voltage: DC3.3～5.0V The Sound Coefficient: ≤1.5dB Axial Ratio: 3Db Gain (dBi): 29dB±3dB(LNA) Max Input Power: (w) 5 VSWE(Output VSWE): ≤1.8 Operating Temperature -40℃～+85℃ Storing Temperature -40℃～+90℃ Cable Length approxi. 5M/15FT(receiver part)+ 1M/3FT(transmitter part) Package size: 13 * 13 * 3cm / 5 * 5 * 1in   Package weight: 142g / 5oz  Notes: Before powering on the product, make sure that the receiving part and the transmitting part must be separated by 2 meters to be energized. Otherwise, the receiving part will not work properly due to self-excitation damage Product installation and connection method 1. Fix the receiver in a place with good signal outside the car, and lead the feeder into the car near the transmitter. 2. Fix the transmitter in the car and the navigation, mobile phone, electronic dongle and other applications are relatively close for a better signal reception. 3. The male receiver of the GPS receiver is connected to the output female of the transmitter, and the relevant wiring is checked. It can be powered on.   Package List: 1 * Antenna Transmitter 1 * Receiver 2 * Adhesive Sticker