Monday, June 2, 2008

FM Transmitters

The Palm can be an excellent way to carry your music collection everywhere. With its large storage space, either through an SD card or internal memory (eg of the LifeDrive 4GB), can be transported hundreds of hours of music without having to carry another device to comply with this task. However, it is unusual to be able to connect our audio Palm of your car, share holders limitation other portable music players (iPod, Zen, etc).

Only newer cars have a USB port to plug in our Palm full of music. The normal thing is to have a player / CD changer, and if the car has some time even tape reader cassette . What to do then?

Algunos coches traen un puerto USB para el sistema de audio
Some cars bring a USB port for the audio system

The solution to listen to music from our Palm in the car, and forget about carry tapes or CDs, are FM transmitters. They emit FM music our reproduced Palm, like a radio station anymore. So we have only to tune the radio in our car and problem solved. The device is connected to the car cigarette lighter socket for power, and the headphone jack on the Palm to get music.

Transmisor FM para el coche
FM Transmitter for car

Of course, the more hands may prefer to build your own FM station, following the instructions on this page .

Esquema del transmisor de FM
FM Transmitter Scheme

The emission range of these devices is a few meters, enough to reach our antenna but not so that it can be taken as an illegal radio station (radio spectrum is regulated, and FM radio operates at a frequency that is not free, in contrast, for example, WiFi). Yes, we have to choose a frequency that is not already occupied by another chain of music, to avoid interference.

One thing to note is that the quality of the music will be the one that allows FM transmission: enough but not comparable for example to a CD. FM modulation, besides being analog audio frequencies disposed extremely high or low signal to accommodate the bandwidth allocated to the channel.

Although manufacturers often advertise their producer as "iPod compatible" or "compatible with Treo" really Culqui FM transmitter that uses the headphone jack is compatible with our Palm. They connect to stereo we want to use via its 3.5 mm jack, the speakers or headphones for a lifetime. Just have to keep in mind, if you use a Treo, it brings a 2.5mm jack, so you have to buy an adapter from 2.5mm to 3.5 mm, but not something that is expensive or difficult to get.

So he ended up having to carry CDs or tapes all day.

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