Basic Facts about FM Radio Transmitter | FMUSER Broadcast


FM radio transmitter affects your life whenever and wherever. For example, if the FM radio transmitter doesn't appear, then the concept of FM radio won't exist. If you work in the field of radio broadcasting, or you are a radio broadcasting hobbyist, you must need to understand what is an FM radio transmitter. This blog will help you learn about it through some basic facts about FM radio transmitters.


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What Do You Need to Know about FM Transmitter?


FM radio transmitter is the core equipment in FM broadcasting. What should we know about it?


Providing FM broadcasting services  - FM radio transmitter, as known as an FM broadcast transmitter, is a kind of radio broadcast equipment that is used to transmit radio waves outward. It is used for modulating the broadcast content into radio signals and broadcasting it, and the listeners within the coverage can receive the radio signals with a receiver like FM radios. The most common application of the FM broadcast transmitter is the FM radio stations in the cities.


Requiring licenses - Generally speaking, the use of the FM broadcast transmitter is administrated by the broadcasting administrations in the local. If you need to use the FM broadcast transmitter, you have to get the license or permission from the broadcasting administration and use it in the permitted frequency range and power level. If you break the rules, you will be fined.


Also Read: Top 5 FM Radio Transmitter for Drive-in Broadcasting in 2021


Commonly Used Equipment in an FM Radio Station


In general, the FM broadcast transmitter can't work normally solitary, it needs other matched radio broadcasting equipment to form a complete FM radio station, and finish the task of broadcasting the FM radio signals. And here's the list of basic FM radio station equipment:


1. FM broadcast transmitter - The main task of the FM broadcast transmitter is to convert the audio signal into the radio signal and process the radio signal, such as removing the noise in the signals. Finally, the radio signals will be transferred to the FM antenna.


2. FM broadcast antenna - FM Antenna is one of the most important matched equipment. It takes the role of transmitting radio signals. If an FM radio transmitter works without connecting the FM antenna well, it will break down as it can't transmit the radio waves. 


3. Peripheral Equipment - In short, the main task of the FM broadcast transmitter is to process the audio signals. So it needs some peripheral equipment to achieve the purpose of broadcasting the FM signals. And we can divide them into 3 parts:


1) Audio storing part

The equipment in this part is used for inputting the audio signals into the FM radio transmitter. They are typical:

  • Computer;
  • Harddrive;
  • MP3 player;
  • etc


2) Audio signals processing part

In the audio signals processing part, the equipment is used for processing the audio signals and helping the operators process the signals. Generally, they are:

  • Mixer;
  • Broadcast Satellite Receiver;
  • Stereo Audio Switcher;
  • Broadcast Audio Processor;
  • Rack AC Power Conditioner;
  • Monitor Headphones;
  • Rack Audio Monitor;
  • Digital FM Tuner;
  • etc.


3) The cables connection part

In this part, the equipment is used for connecting each piece of equipment well and making them work together. This equipment is included:

  • Audio Cable;
  • USB Cable;
  • RS-232/486 Control Line;
  • Power Plug-in;
  • Network CableEquipment Label;
  • etc.


Last but not least, the accessories are important as well. They are used for connecting the equipment in FM radio stations and helping them work together.


Also Read: Complete Radio Station Equipment Package You Should Have for FM Broadcasting

Best Selling 50W FM Radio Station Package for Sale - More


What Applications are FM Transmitters Used for?

FM radio transmitter is distinguished into low power FM transmitter (0.1 - 100W) and high power FM transmitter (100 - 10kw), and they are used for different applications. 

And here's the list of applications:


  • Drive-in church;
  • Drive-in movie theatre;
  • Drive-in parking lot;
  • School broadcasting; 
  • Supermarket broadcasting;
  • Farm broadcasting;
  • Factory notice;
  • Enterprise conference broadcasting;
  • News programs; 
  • Outdoor live broadcast;
  • Live drama production;
  • Community radio;
  • Christmas light display broadcast;
  • Education broadcast;
  • FM radio stations;
  • etc.


Also Read: 4 Main Applications of FM Broadcast Transmitters

Frequently Asked Questions

1. Q: How Far Can an FM transmitter Work?

A: Around 100 - 300 feet for a low-power FM transmitter.


Actually, it is a complicated question. The working range for an FM radio transmitter depends on many factors, including receiver, obstructions, elevations, etc. A low-power FM transmitter can transmit a range of around 100 - 300 feet; while a high-power FM transmitter can transmit a range much larger than the former one.

2. Q: What is a Low Power FM Radio Station?

A: It means those FM radio stations working with lower than 100 watts.


The low-power FM radio stations are those working with 100 watts and transmitting a range of around three and one-half miles. They are important forms of FM broadcasting.

3. Q: Is a Low-power FM Radio Station Legal?

A: You need to consult the local radio broadcasting administrations.


In most countries globally, running a low-power FM radio station is required to apply for licenses from the local radio broadcasting administration, or you'll be fined. At the same time, different countries differ in regulations. Therefore, please consult the local regulations on community radio in detail.

4. Q: How does FM Radio Transmitter Work in Drive-in Church?

A: An FM radio transmitter works in the following steps: Receive the audio signals, convert them into the FM stereo signals, and the FM antenna broadcast them.


The steps are as the following in detail.

1) The Operators would prepare the audio resources and input them into the FM radio transmitter.

2) The audio signals would be transferred into FM signals when passing through the FM radio transmitter.

3) Then the antenna would broadcast the FM signals outward.



We hope this blog can help you build a basic acknowledge of FM radio transmitters. Do you have any idea of building up your own FM radio stations?  We provide turnkey FM radio station solutions with the best prices. If you want to buy any complete radio station equipment packages, please feel free to contact us







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