Outdoor Transmitter Telescope Radio Fm Antenna For Car
- Transportation:
- Ocean, Land, Air, Express, Others
- Port:
- SHENHZEN, GUANGZHOU, HONGKONG
Quantity:
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Basic Info
| Place of Origin: | CHINA |
|---|---|
| Productivity: | 20000000 |
| Supply Ability: | 200000 |
| Certificate: | ISO9001 |
| Transportation: | Ocean,Land,Air,Express,Others |
| Port: | SHENHZEN,GUANGZHOU,HONGKONG |
Product Description
Product Description
The antenna of car radio has different shapes, but it is actually a subtle product of the game of industrial design, functional requirements and cost control. In terms of aesthetic shaping, automobile manufacturers are well aware of the value of antenna as a "mobile visual symbol"-since BMW introduced shark fin antenna into mass production models in 2002, with its smooth arc design, it not only reduced the drag coefficient by about 0.005Cd, but also made it a symbolic element of brand sense of science and technology; Retro models, such as Volkswagen T2 and Jeep herdsman, retain the classic long pole antenna shape, and pay attention to both functionality and nostalgic style through retractable design to attract specific consumer groups.
From the technical dimension of signal reception, the FM AM Antenna shape needs to be accurately adapted to the characteristics of different frequency bands. The FM band (87.5-108MHz) is easily blocked by high-rise buildings, tunnels and other environments because of its short wavelength. With the effective receiving length of 1.2-1.5 meters, the traditional roof antenna can improve the signal capture efficiency by about 30%. However, the low-frequency signal in AM band (535-1605kHz) is sensitive to directionality, and the annular built-in antenna or rear window printed antenna (such as integrating metal wires into glass by etching technology) can effectively suppress electromagnetic interference and ensure the pure sound quality.
At the level of engineering realization, safety and cost factors also dominate the design trend. Taking the high-speed driving scene as an example, the hidden shark fin Shark Antenna can reduce the wind noise by 25%-30% compared with the traditional long pole antenna; Although the research and development cost of the composite antenna integrated with tire pressure monitoring, GPS and other functions increases by 20%-30%, the number of parts is reduced through functional integration, which in turn reduces the later maintenance cost. Economical vehicles generally use printed antennas with a cost of only 5-10 yuan, giving consideration to signal stability and cost performance, and achieving a balance between technology and market demand.
Faced with a wide variety of car radio antennas, consumers should choose based on the actual use scenarios and vehicle characteristics. If you often drive in remote areas with weak signals, the external long-rod antenna with high gain can significantly improve the radio reception effect; If the appearance is simple and beautiful, the integrated shark fin antenna or the printed antenna hidden in the rear window glass is a good choice; For car owners who need more high-speed driving, the antenna with low wind resistance can effectively reduce noise. It is worth noting that there are differences in antenna interfaces and signal protocols of different models. Before replacement, it is necessary to carefully consult the vehicle owner's manual or consult the 4S shop for adaptation information to ensure that the antenna specifications match the vehicle.
When selecting the antenna of car radio, the material and process details can not be ignored. High-quality antennas are usually made of copper or alloy materials with good conductivity, and the outer layer is treated with anti-oxidation to ensure the stability and service life of signal transmission; The cheap plastic antenna not only has poor signal receiving ability, but also is easy to age and break at high temperature. In addition, professional installation and debugging is very important for antenna performance. Some models need system matching after antenna replacement, otherwise there may be noise, signal interruption and other problems. It is recommended to leave it to experienced technicians to achieve the best radio reception effect.
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