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What are the functions of a car antenna?

1 Answers

Tabitha

07/29/25 11:12pm

Car antennas serve the purposes of signal reception and static electricity discharge. Signal Reception: They receive signals from external sources to ensure the proper functioning of communication devices; in remote areas, they can enhance the signal strength of communication equipment. Static Electricity Discharge: During dry weather, cars are prone to generating static electricity. The car antenna can discharge the static electricity accumulated on the car's body, safeguarding passengers and the vehicle's electrical circuits. Considering the mobile usage conditions of cars, except for devices like ETC used in specific locations, general car antennas should be non-directional. Additionally, a single-axis antenna should have a length equivalent to 1/4 of the received radio wavelength, with the typical installation length on a car being around 1 meter. Precautions for installing car antennas: Vehicle body grounding; noise considerations; drainage or waterproofing considerations; wind resistance noise.

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