The modern audio market offers a huge variety of devices for listening to broadcasting. The question is what kind of FM radio are there?, is relevant not only for car enthusiasts, but also for music lovers who prefer the live sound of studios. Despite the development of digital streaming services, analogue broadcasting remains the most accessible and reliable source of information and music.
Format Frequency Modulation (frequency modulation) provides high quality sound in the range from 87.5 to 108 MHz. However, technical implementations of receivers can differ radically from each other in functionality, size and method of integration into a vehicle or home audio system. In this article we will analyze in detail all existing types of receivers.
Understanding the differences between device types will help you make the right choice when purchasing or upgrading equipment. We will consider both classic solutions and modern hybrid gadgets that can receive a signal even in conditions of poor air traffic.
Stationary car radios
The most common type of devices are built-in head units, which are installed in standard places in cars. Car radios 1DIN or 2DIN formats are full-fledged multimedia centers. In them, the FM tuner is just one of the functions along with Bluetooth, navigation and support for USB storage devices.
The quality of reception in such devices directly depends on the built-in antenna signal amplifier and the quality of shielding of internal circuits. Expensive models from brands like Pioneer or Alpine often have dedicated tuner chips with RDS functionality, allowing you to display track titles and provide navigation guidance via voice messages.
It is important to consider that the standard systems of modern cars can be software limited. Factory settings sometimes they block the ability to manually enter frequencies, forcing the user to rely only on automatic search. This can be a problem in areas with weak signals where fine tuning is required.
When choosing a new radio, pay attention to the tuner sensitivity parameter. A level of 1–2 µV is considered a good indicator, which allows you to catch stations even outside the city. It's also worth checking for support RDS-TMC, which can provide traffic alerts if the service is available in your area.
Portable and pocket receivers
If you need mobility, then you should pay attention to compact devices. Portable radios often run on rechargeable batteries or standard batteries, which makes them independent of the vehicle’s on-board power supply. Such gadgets are ideal for fishing, picnics, or use in the garage where there is no stationary equipment.
Modern models such as Tecsun or Sony, are equipped with telescopic antennas, which significantly improve the quality of reception compared to solutions built into the radio. Some devices support operation in the LW, MW and SW bands, which expands their functionality far beyond conventional FM broadcasting.
⚠️ Attention: When using portable receivers inside a vehicle while driving, make sure that the device is securely fastened. A falling gadget can roll under the pedals and create an emergency situation.
A special niche is occupied by protected models with standard moisture protection IPX7. They are not afraid of rain or splashes, making them an excellent choice for open Jeeps or motorcycles. The weight of such devices usually does not exceed 200–300 grams, and the operating time on a single charge can reach 20–30 hours.
For better reception on a portable radio in a car, try attaching a telescopic antenna to a metal part of the body using a suction cup if the design allows it, or use an external active antenna with a magnetic base.
FM transmitters and modulators
Owners of older cars that are not equipped with an AUX input or Bluetooth often wonder what FM radio upgrade solutions are available. The answer is FM transmitters. These devices connect to a smartphone via Bluetooth or a 3.5 mm cable, and then broadcast sound on a free FM frequency directly to the car's standard radio.
The principle of operation is simple: the gadget creates its own mini-station inside the cabin. You need to find a free frequency on the air (where there are no stations broadcasting) and tune the car’s receiver to it. The sound quality depends on the purity of the airwaves and the class of the transmitter used.
There are two main types of such devices:
- 📡 Light-up modulators — are inserted directly into the 12V socket, have a display and control buttons.
- 🔌 Compact Bluetooth adapters — powered by USB, controlled only from a smartphone, and do not have a display.
- 🎵 Hi-Fi transmitters — expensive models with support for aptX codecs to minimize quality loss.
The main disadvantage of this method is possible interference from powerful radio stations in large cities. If you live in a metropolitan area, finding a “clean” frequency can be difficult and the sound may be interrupted by crackling sounds. However, for country trips this is an excellent budget solution.
☑️ Selecting an FM transmitter
Digital hybrid systems (HD Radio and DAB+)
Technologies do not stand still, and analogues are being replaced by digital standards. Although the question “what FM radios are there” most often implies analog, modern tuners are often hybrid. They can receive a regular signal and automatically switch to a digital stream DAB+ or HD Radio, if available.
Digital broadcasting is devoid of noise, hiss and interference characteristic of the analogue format. The sound is transmitted in a format close to CD quality, and album covers, song lyrics and other graphic information are broadcast along with the audio stream. In Europe, the DAB+ standard is actively replacing classic FM.
In Russia and the CIS countries, the development of digital radio broadcasting is proceeding at its own pace, and coverage is not yet continuous. Therefore, having a hybrid tuner is more of a reserve for the future. Such devices are usually more expensive, but provide better reception stability in areas with a strong signal.
| Parameter | Analog FM | Digital DAB+/HD | Internet radio |
|---|---|---|---|
| Sound quality | Average (depends on interference) | High (CD-like) | Depends on network speed |
| Coverage | Wide (everywhere) | Limited (city) | Global (where there is 4G) |
| Traffic consumption | 0 MB | 0 MB | High |
| Add. data | Text only (RDS) | Graphics, photos, text | Full multimedia |
Comparison of characteristics of various receivers
To finally make your choice, you need to compare the key parameters of the devices. Sensitivity and selectivity - two main technical terms that are worth paying attention to. Sensitivity determines how weak a signal can be “seen” by the radio, and selectivity determines the ability to separate the desired station from the neighboring one.
Expensive models often have a function Noise Cancelling to suppress static noise. Another important parameter is the number of memory cells. If you travel frequently, the ability to store 30-40 stations will be more convenient than the standard 6-12 buttons on simpler models.
What is RDS and why is it needed?
RDS (Radio Data System) is a technology for transmitting digital information along with an analog FM signal. It allows you to display the name of the radio station, the name of the artist and the title of the track on the display of the radio. In addition, RDS can be used for automatic frequency reconfiguration when traveling between cities (AF function) and for emergency messages (EON).
Don't forget about ergonomics. Large buttons and clear menus are important on the road. Touchscreens look modern, but are more difficult to use on the go or with gloves. Mechanical encoders and tactile buttons are often more practical.
Reception problems and ways to solve them
Even the most expensive radio can perform poorly if the antenna system is not configured correctly. Antenna amplifier This is an often overlooked device, but it solves 90% of low or hoarse sound problems. If you are far from a transmission tower, a passive antenna may not be enough.
A common problem is interference from the operation of the engine or other electronic systems of the car. In such cases, installing ferrite rings on the radio power wires or checking the quality of the body grounding helps. Sometimes just cleaning the antenna connector contacts is enough.
⚠️ Warning: Never turn on a powerful antenna amplifier if you are in close proximity to a radio station transmitting tower. This can lead to overload of the tuner input stage and the appearance of severe distortion or even failure of the device.
For optimal reception in difficult conditions, use the Local/DX mode. In mode DX (Distance) increases sensitivity, which allows you to catch distant stations, but the noise level increases. In mode Local The tuner ignores weak signals, leaving only strong local stations with clear sound.
The quality of FM radio reception depends 80% on the condition of the antenna and the quality of its connection, and only 20% on the capabilities of the receiver itself.
Frequently asked questions (FAQ)
Why does the radio wheeze when the car is moving?
This phenomenon is called the "multipath effect". The signal is reflected from buildings and objects, arriving at the antenna from different directions with a slight delay. Digital tuners handle this better, but in analog FM it causes a characteristic crackling sound. The cause may also be a discharged battery, which creates interference in the on-board network.
Is it possible to listen to FM radio over the Internet?
Yes, most modern radio stations broadcast online. To do this, you need a smartphone in the car with a radio station application or aggregator (for example, TuneIn) installed and an Internet connection via a mobile network. This allows you to listen to your favorite station from any city in the world without being tied to local frequencies.
How to improve FM reception in a garage or basement?
In metal buildings and underground, the signal is shielded. To improve reception, you will need an external active antenna placed outside. At home, you can use indoor antennas with an amplifier connected to stationary receivers.
What is the difference between the 87.5-108 MHz and 64-108 MHz bands?
The range 87.5-108 MHz is an international standard (CCIR). The range 64-108 MHz (or 65-74 MHz) was used in the USSR and Eastern European countries (OIRT standard). Modern receivers usually support both bands, but to receive old Soviet frequencies you may need to switch the region in the settings Region.