With the advent of compact digital music players, FM transmitters are becoming more popular. FM means frequency modulation , and this type of transmitter allows portable devices such as MP3 players, to communicate with the FM radio. Will allow You to hear all your favorite songs and podcasts stored on your MP3 player through the speakers of the car stereo or any other FM radio you have. Most FM transmitters plugs into the headphone Jack, so can work on any device with a 3.5 mm port, while the other is designed to work with microphones and they work as a system WHILE in the office. FM transmitters conveniently compact devices, and often placed in the pocket and their service is extremely simple. All you need to do is to connect it directly to an ipod or similar device, and the Converter converts the audio into an analog audio signal which can be heard on FM radio. Then tune your radio to the frequency corresponding to the sensor with two modes of operation, and you will hear loud and clear music. In the United States FM transmitters operate at a frequency of 87.7 MHz and 107.9 MHz. Some sites help to find unused channels in Your city. You may have to click on all these channels before you find one that responds to your tunes, but when you find it, you can count on the fact, as the frequency start. In addition to the cutoff frequency of Your music will interfere with the live stream and you will hear a little of his personal collection, a little mysterious and show a lot of noise. Even with the appropriate frequency there are other factors that can affect your signal. The story of transmitters The first transmitters was published in 1887 and created radio waves using spark high voltage between the two conductors. These original devices could not, however, transmit sound and send information through radiotelegrafii . They tended to be very noisy, and 20 years. Twentieth-century transmitters vacuum tubes lashed to these more primitive technology, because they can transmit sound using amplitude modulation , and therefore, there was AM radio. Modulation in the media is a process in which a message signal, for example, audio, moves inside another signal that can travel. In 1993, a man named Edwin Armstrong created the transmission frequency modulation (FM), which was less interference, less static and noise than AM. The first FM radio station went on the air in 1937. This year there were also several major radio, because the artist previously known from television work, in the end, found it a suitable environment to explore. WC Fields was in his first radio show “Chase and Sanborn Hour” in 1937, and NBC released the “Charlie McCarthy Show”. Special features that you should look for If you are going to travel a lot, consider a transmitter with auto scan . When crossing state borders, the frequency will change, but auto scan will help to find locally valid. Another handy function of programmed radio station – they allow you to save the desired channel for cities and States that usually go. In the case of particularly long trips you’ll appreciate the inverter is equipped with a lighter adapter with a USB port so you can charge your device on the way. If you want to be able to use the transmitter during movement, such as while traveling, camping, and you want to control the music from the entire page – search for transmitters within wide limits. Most transmitters have a range of 10 to 30 feet, and it’s okay if you only listen to audio files in the car but didn’t see their needs if you go home with the device. It is also important that the distance between the transmitter and the antenna of the car, so it is best to place the device in front of the car. In saying this, if you want to relax in the back seat, while controlling the music, buy the model with the remote control. If you live in a densely populated area, you may have difficulty finding the light station, with which you can connect. In this case, the search models in a wide range of frequencies. Ideally, your device offers a full range of channels from 88.1 to 107.9 and doesn’t miss anything. Some more advanced models have noise filters that remove noise and interference to Your music. For ease of use, you will receive a device with a radio data system (RDS). RDS just displays information about what you listen to – for example, the name of the song and artist on the radio screen. This is much better than waiting for 20 seconds of a song before you know it, you like it or not.