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FM Transmitter Static Problems

Posted by Gizmo Guy on 8th Jan 2020

Best Fm Transmitter with No Static

An FM radio transmitter is a device that transmits audio from your phone in the form of FM frequencies. Many FM transmitters have a range of only a few yards, enough to reach from one end of a home or backyard to the other.

FM radio signals may suffer static from any number of causes, such as weather and geography, walls, or the location of your stereo antenna. Range won’t impact how well the device performs in your car, but weather and radio congestion might.

Most radio transmitters use what is called frequency modulation (FM) to differentiate between the source signals. FM waves are more static resistant than amplitude modulation (AM), but the FM receiver’s performance can be adversely affected by its proximity to other electronic devices. When other electrical devices are too close to the FM tuner, static can develop and interfere with broadcast quality that is the root of the fm transmitter static problem. 

There is no best station / frequency for your fm transmitter. The problem is, anything that emits an electrical field will produce static noise from your car’s audio system, and, unfortunately, there are a lot of systems in your car that can emit an electrical field. They include but are not limited to, your car’s windshield’s wiper motor, to the alternator, and even the FM transmitter system itself. 

In some rare cases, it is possible to experience static whether you’re playing the radio, audio CDs, or even auxiliary audio sources. In such cases, the most likely culprit is a ground loop shortage, or some other component is introducing the static and humming noise into the system.

If the problem only occurs when your car’s engine is running, and the pitch rises and lowers with the RPM, then the problem lies with the alternator. This kind of problem can be easily fixed by installing a static filter.

On the other hand, if you have a persistent static problem regardless of whether the car is running or not, then the problem lies with the station's transmission or your audio system’s reception. In such cases, the only thing you can do is avoid those stations.

If you own a luxury / german car and you know that those garbage from Ebay or Amazon will NOT WORK.

Why? luxury / german cars are made differently, the high end stereo has special filter that filter out the radio noise, but interfere with those transmitter sent out.

You ended up with distorted sound filled with high pitch noise that can only be mask with high volume.

I discovered the problem when I tried to connect new iPhone to the older Mercedes Benz I inherited from my dad.

I want to keep the car as “ original “ as possible, but I want to be able to listen to my music and my podcast, but the old benz has no Aux connection.and the only option is thru the tape player which came with long ass wire that is ugly and irritating and it sounded horrible.

Frustrated with no option, I came up with my own device. The Gizmo Guy Gadget

If the static only occurs when listening to the FM output, and not with audio CDs, then it could be as simple as a faulty antenna, or, again, your proximity to the source station.

One way to pin down whether your static problem emanates from a faulty antenna or your proximity to the source station is to drive around and see if the problem decreases or increases as you get closer or farther away from the source.

After you have ascertained that the problem is not external, but internal, the next try to pin down the source of the FM static by checking the head unit’s grounding connection.

Also, when grounding the head unit, make sure you don’t ground other components in the same place, as this practice could cause ground loop feedback.

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How to get  rid of static noise on an fm transmitter by doing these: 

  1. Keep all devices, like cellphones or two-way radios at least 20 feet away from the FM tuner. Today’s cellphones are programmed to send out a ping for location purposes, and this pinging can interfere with FM receivers. One way to find out whether or not your cellphone is the culprit, place your cellphone next to the FM tuner and listen for any static interruptions when the cellphone pings.
  2. If your FM tuner has an analog dial, set it to your favorite station, adjusting it until you have the best reception. During the day, the quality of an FM signal will degrade due to changes in atmospheric pressure. Consequently, you may have to make periodic changes throughout the day.
  3. You might have to buy a larger external antenna. Most FM receivers come with attachments that allow for larger antennas. Use the modified attachment to connect the FM receiver and see if that doesn’t solve your static problem.

When all else fails, an FM transmitter can be a nostalgic and low-cost way to extend the life of your car’s audio system. Rather than buying and installing an expensive, new head unit, or FM modulator, an FM transmitter lets you expand your listening options at a relatively cheap price, and you’ll barely have to break a sweat installing it.

Full Review of the  Best FM Transmitter No Static by Namia 

However, the best way to ensure you get the best performance out of your FM transmitter is not to go too cheap. Although most FM transmitters are relatively cheap, there are some important features you should be on the lookout for.

The most important feature to lookout for is manual tuning, since it is this feature that allows you to zero-in on the absolute best reception while avoiding unwanted stations. Be aware of transmitters that come with only a handful of preset frequencies, or don’t even allow you to change the broadcast frequency period.