There is a popular saying in radio circles that to get a good communication signal, we must first have a good platform, but a good platform is not as good as a good antenna, and finally a good antenna is not as good as a good position, which shows the importance of a good transmitting position for radio activities. But the installation in the car is different, because the car is moving most of the time, so it seems impossible to ask the geographical location. Therefore, we should make full use of the space on the vehicle to meet the second condition, that is, erect the antenna. The first thing to consider in car erection is the foundation support of antenna erection. There are many kinds of antenna supports, that is, antenna seats, which are used in different erection positions, such as plane type, rain trough type, jacket type, suction plate type and so on. , need to choose according to different vehicles and personal needs. Flat type: generally made of stainless steel, suitable for the trunk and front hood of vehicles. Rainwater trough bracket: mostly made of stainless steel, installed at the drainage trough on the roof. Jacket bracket: In order to prevent rust, it is also made of stainless steel and installed on the rearview mirror or roof rack of the truck. Of course, there is also the longest-watched suction antenna base. The biggest advantage of this antenna pedestal is that it is easy to erect and can basically adapt to various positions of vehicles. There are two kinds of suction cups. One is based on a strong magnet, which can be adsorbed on the metal plate of the vehicle. For the protection of vehicle paint film, a thin cloth is wrapped at the bottom of the suction cup for protection. The other is to use vacuum suction to absorb on a clean plane, which is simple to install and easy to retract.