Best FM transmitter

The 6 Best FM transmitter

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Many people will know it: you jump from station to station, but nothing interesting runs on the car radio. How nice it would be if you could simply listen to the music of your MP3 player or smartphone. But this usually proves to be difficult, because many of the newer car radios do not have the necessary connections to be able to use an MP3 player or a smartphone. Using headphones in the car is out of the question, as it can firstly be banned and secondly life-threatening. Do what, then? The solution to the problem is relatively simple

Our Top FM transmitter Pick

Car Parts & Accessories: FM transmitter Video Guide

An FM transmitter is a small mobile transmitter that can transmit any audio signal on a VHF frequency wirelessly. If you now connect an MP3 player, smartphone or tablet to an FM transmitter, the car radio receives the signal and plays it back. In order for the transmission from MP3 to the car radio to work smoothly, a few things should be taken into account. The small FM transmitters have only been permitted here in Germany since 2006. Only devices that have a CE test mark and whose power does not exceed 50 nW are permitted. In addition, the area of application (Germany) must be noted on the device and the packaging. Also the transmitter range was strongly limited by the legislator and may not be more than 3 to maximally 5 meters with a FM transmitter outside of the vehicle. In the interior of the vehicle the range is limited by the interior equipment and the sheet metal body again considerably. The transmitter should therefore always be placed close to the car’s antenna and the small transmitter needs an unoccupied, free frequency to transmit the music of the MP3 player or smartphone without interference. In metropolitan areas with many large radio stations, however, the free slots can be extremely limited. In order not to reduce the sound and reception quality, the transmitter should be able to access the complete spectrum of available frequencies in the German broadcasting range. If the car radio search is activated, it can happen that the car radio automatically tries to set a new station. To prevent this, you have to deactivate this function.

With the low transmission power allowed for a transmitter in Germany, it’s understandable that you shouldn’t expect too much from the sound quality. Since the FM transmitter transmits the audio signals analogously just like a normal radio station, the familiar noise and crackling can also occur in the event of interference. Since the transmitters can also lose transmitting power at low battery power, it is advisable to always have a set of charged, strong batteries at hand. In the vehicle itself, the transmitter can be connected to the cigarette lighter via a suitable adapter, the transmitter is always automatically supplied with sufficient energy by the vehicle’s electric circuit.

To increase the sound quality, a transmission via Bluetooth would be optimal. Unfortunately, most FM transmitters on the market are not yet equipped with this technology and most car radios are not able to receive audio signals via Bluetooth. However, there are now retrofit kits available for a large number of car radios that can be easily and uncomplicatedly connected to your own car radio. For radios that have a 3.5mm jack connector, the DBPOWER B233 would be a good choice. The DBPOWER can be connected to two smartphones at the same time and even functions as a hands-free kit. If the radio cannot be retrofitted and the sound quality is severely impaired, it can sometimes be helpful with older car radios to set the volume of the MP3 player or the connected smartphone a little quieter, but higher with the car radio.

An external equalizer can also help to improve the sound. This way you can adjust the sound to your personal preferences. The settings for the transmitter can be set and saved separately, eliminating the hassle of resetting each time the transmitter is started.

After the market for FM transmitters was opened in Germany in 2006, a large number of different models are available in almost all price segments. There are devices with an integrated MP3 player that are operated via a memory card, transmitters with hands-free systems that simultaneously operate the smartphone and transmit the music, transmitters integrated into navigation devices or devices that can be used not only in the car but also at home. Here is a brief overview of price and recommended transmitters with different functions.

The Belkin CarAudio Connect FM Transmitter is in a higher price range. The Belkin Transmitter connects to the smartphone via Bluetooth and has a USB port to charge the smartphone while driving. With hands-free function for safe telephoning. When a call is received, the transmitter automatically switches off the music so that you can hear the person you are talking to clearly through the radio’s speakers. The Belkin is easily controlled at the touch of a button.
The TeckNet® Universal FM Transmitter/Radio Transmitter is a small but powerful transmitter without a lot of bells and whistles. Compatible with most smartphones and Iphones, it easily transmits the audio signals to the car radio. The setting is made via only two buttons and can be followed via a small display. The set frequency can be stored and an adapter for the cigarette lighter is included.
The Patuoxun Radio Receiver, with LCD display, is a wireless transmitter for wireless use. Simply plugged into the headphone jack of the mobile phone or MP3 player, the small transmitter transmits the audio signals to the nearest radio and the JETech Wireless FM Transmitter has an automatic scan function. If both operating buttons on the device are pressed simultaneously, the transmitter automatically searches for an interference-free frequency and displays it in the display. In the included cigarette lighter adapter is an additional USB port, with which you can charge the smartphone.

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