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Every person who owns a car wishes to have a DVD player in his car. But it should have a good DVD player that possesses all the features. Today, high-tech DVD players are designed with lots of useful features that meet our purpose. These car DVD players are a great source of amusement especially when you are going for a long trip. The various functionalities at the user end include television watching, GPS and operating different CD and DVD formats.

One such feature is so called “AF’. It is the short form of “Alternative Frequencies”. Now you might think that what exactly does AF mean? Look for this feature also while buying a car DVD player.

Some people think that there is any mystery behind this functionality of AF. However, this is not true as many shopkeepers offer this feature throughout the world. Those who love a particular station to listen to, is a great choice for them. It happens many times that a particular station signal becomes weak and it cannot be sensed by the player. For instance, you are on a drive and there is any spillover or interference from nearby radio frequency that distorts your loving station signal.

To be very true, there is nothing so confidential about the above mentioned function “AF” as many shopkeepers who sell car DVD players worldwide provide this function. Its’ function is very much appreciated by the player owners who love to listen to their favorite band however, do not get the benefit when one of the band’s signal gets very weak and is not sensed by the player. Suppose you are on a drive and due to any interference from other radio frequency your station’s signal gets blocked.

Hence, AF allows the radio tuner of car DVD player to retune to other higher frequency band which is taken from the same station or sent from other station when your last signal begins distorting. So, AF offers complimentary signal to any particular radio station signal by scanning any other broadcast signal.

This all happens so perfectly that the player switches over only when it has found other signal that is receiving the same station. This move will be unnoticeable and seamless.

Hence, AF provides this excellent feature. As a result the DVD player will not turn off until there is other signal which is carrying the previous station.

Everything has its pros and cons. same is true with AF functionality of car DVD players also. Sometimes they show spillover effect in which the present signals that the DVD player is carrying whether in terms of hiss or static or radio station information loss on the screen.

It also affects some activities of the player like static, hiss or radio station information is sometimes lost on the screen. Consider these factors also before you go to buy car DVD player.

Therefore, many people who go to buy a car DVD player not only look for the other available features but also AF as it offers a great function. Earlier car DVD players had only limited features but now-a-days, the advanced car DVD players are a great source of amusement for the users especially when they are going on a long drive. So, if you are also looking for a good car DVD player, this is the right time to go for it.

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