Operators deploy fewer base stations in rural areas.The signal is vulnerable to significant attenuation due to terrain impact, and the vehicle body will also attenuate the base station signal by 15~20dB. If the vehicle is driving in the suburbs and the base station signal received in the vehicle is lower than -105dBm, mobile phones in the car will not work normally. Installing car amplifiers can improve in-vehicle signals even when the vehicle is traveling in an area where the base station signal is weak (In the area where there is no signal at all, even if it is installed, the signal in the car cannot be improved)

The main unit of the car amplifier is usually fixed under the passenger seat, and the car omnidirectional antenna with magnet base is mounted on the metal part of the car roof as the receiving antenna. Hide the lead wire of the receiving antenna into the sealing strip of the vehicle door frame. Then pull it into the vehicle and connect it to the BTS port of the car's amplifier.

Use a patch antenna with a self-adhesive sticker to attach it to the suitable position inside the vehicle as a coverage antenna. The signal quality in the vehicle can be improved by using the vehicle mounted 12V power supply to power the amplifier.