By: Jack Wylde
Submitted: 2010-02-24 23:15:23 | Word Count: 508
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.
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The mechanism in which this works is so simple. Its just like how to turn the dial for selecting the type of music which you would like to be played in your system. There are many stations when you tune some may be very strong but some may be weak. On turning the dial you can see the signal fade in or fade out. There is specific license for all the radio stations to work on. It is given by the FCC.
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.
A connection should be established between this antenna and the tuner. So for that one needs to use a very thick wire that can be buried in the body of the car. There should be absolutely no interference as with any phone or any other connections. There is automatic powering system in few types of antennas. Through the tubes of the antenna one can use a small motor that can be useful in operating a small strip of gears which are very simple in usage. There are many new types introduced in the market. These days steel of paper thickness is also available in the market.
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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