Antenna is very essential for a radio. The air surrounding us in very silent. The activities that are electromagnetic cannot be captured by the ears of normal human being. All the waves including the one from TV, radio, communication through wireless and even transmissions of the internet are in this environment where we all live, sleep and eat. The human body is not affected by this kind of electromagnetic waves. And hence it does not have the capability to sense its travel. So it is very essential to use a device that could capture all these signals. But how do auto radio antennas work?

But what exactly is known by a radio antenna. A device which is is used for capturing this waves which wander the air surrounding us is known as an Antenna. An antenna has a tubular structure which is generally made up of stainless steel. Most of these antennas are generally telescopic. They can change their length and height as they wish. Longer antennas and lower frequency broad casts are required for transmission of AM radio.

We must realize that the atmosphere around us carries many waves. It carries the waves which are being transmitted. These are detected by a component in the radio. It is called antenna. It is made up of steel of stainless steel type. It is a tubular structure generally thin. They can be extended or reduced in length.

The olden model cars still have a antenna which resembles the one that can be seen in the old hand usage type of radio. They are made up of thick and long steels rather than a small thin one being used these days. They are also very strong and heavy. In the case of self radios that are self contained there is same location for both this and then the tuner of the radio but this is not the case with new age cars.

We all happily enjoy music in radio. We have never thought how such a broadcast happens. Nowadays many stations have come up. As we keep tuning we will observe clearly how these antennas picks up radio waves of a particular station. Each station works at a particular assigned frequency. A license has to obtained from FCC which regulates the communication of radio stations. Only waves that are strong can be caught by the antenna of the radio.

There are lot of differences between an ordinary radio antenna and radio antenna of car because the car is not stationary. A heavy wire should be connected that runs through the body of the car that remains shielded. We may have doubt why shielding should be done. This is done to prevent interference of external waves. These external wave can be anything right from cell phone or even various power lines in the road. Only when this interference is stopped there can be smooth flow of radio waves to tuner from the antenna of the radio in the car.

A very important caution to be taken is to fold the antenna as much as possible before sending it to any kind of wash or for service. Because that may cause any kind of breakage or repair to it leading to a problem in reception of signals.

Hence one must know how do auto radio antennas work?

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