What should I pay attention to to protect the car antenna?

发射 The antenna works best when the antenna is in the center of the roof, but the antenna is very high, and it is easy to be hung on the antenna when crossing the tunnel or tree-lined road. Let ’s look at what needs to be paid attention to the car antenna?

1: Do not use fake antennas (because the quality is not guaranteed), either use diamond antennas or use association antennas. Ensure that the antenna itself has a standing wave ratio of less than 1.5. And ensure the impedance and reactance match.

2: Do not use the antenna on the ground. The standing wave will be very large after the ground is down, which will damage the machine.

3: The antenna cannot be used indoors, and it also causes high standing waves. It is also harmful to the human body.

4: Try not to disassemble the antenna as much as possible, it will easily cause bad contact and high standing waves, which will affect the life of the machine.

5: Please pay attention that the joint can not enter the water on rainy day, if it enters the water, it will also stand at the high wave. Always pay attention to the inspection of the joint. There is no loose condition.

6: Always check the exit end of the feeder for damage. It is recommended to replace it if it is damaged, because it will cause radio wave leakage, standing waves, and endanger human body. If it breaks 100%, it cannot be launched.

7: Low power transmission by the team or short-distance communication will also increase the service life of the platform. Also good for your own health.

8: If it is a car antenna, the output voltage of the rectifier on the car to the battery must be guaranteed below 15V. Usually can be measured with an electric meter. It should be noted that the voltage is generally around 12.5V when the flame is off, and the voltage to be speeded should be around 13.5V. Increase the speed by 3,000 rpm. As long as it does not exceed 14V, it means that the rectifier has no problem. The radio is also well protected.

9: No longer deviate from the transmission module of the radio, and transmit from frequencies other than the center frequency of the antenna, because the more deviated, the larger the standing wave. It is even more impossible for a 400-megabit antenna to transmit above 2 meters, and vice versa. This situation is serious and the machine is OVER.

10: The antenna is damaged and cannot be transmitted if it is broken. There are also some invisibles, such as the resistance of the antenna root used as a matching cannot be burned, otherwise the antenna will not match, and it is easy to form high standing waves.