(1) Before installation, check the continuity of the antenna and the center of the coaxial connector with a multimeter, and the insulation of the outer and center of the coaxial connector.

(2) When the communication equipment is installed in a vehicle, the antenna is usually installed on the roof of the vehicle. For iron-clad cars, the antenna usually uses the roof as the ground network, and the ground wire should be fully confirmed when installing.

(3) When loading the car, the cable can be led into the car through the car beam. If it is introduced from the gap of the car cover, it is better to use the fake hole in the engine room; if it is introduced from the window, the opening and closing of the door window must not be damaged.

(4) During loading and unloading, the superposition of direct radio waves, reflected radio waves, and refracted radio waves will occur in undulating areas and cities, especially in large cities, resulting in multipath effects, which will cause radio wave fading and distribution fluctuations. This phenomenon manifests itself as communication equipment receiving

The effect is good or bad, it will change as the position of the communication device moves. The reception is poor in some places, and moving a few meters may become very good. At this time, the car should move around to find the location with the best communication effect.

(5) When the communication equipment is installed and used in the vehicle, because the antenna height is very low, do not park the vehicle near the obstacle along the communication direction line or under the high-voltage power line.

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