Antennas for FM Radio: Features, Model Overview, Connection

When choosing a radio, attention should be paid to not only the main design, but also an antenna. Today in our article we will talk about the features of the antennas for FM radio, their varieties and the rules of connection.

Peculiarities

Despite the fact that today computers or at least televisions are very popular, there are still broadcasting fans. In order for FM radio fully and correctly performed all its functions, it must be equipped with a specially intended antenna. Currently, a large number of analyzes are represented in the market, which provide high signal reception quality. They differ in size, appearance and functional features. Consider some of the most common options:

  • Rod devices made in the form of an ordinary rod or have a rounded form;
  • Wire Antennas are curved;
  • Design of telescopic aggregates consists of special metal rods, which in its appearance resemble telescopes (from here and the name of this species);
  • Retractable aggregates Most often installed in cars, they have a special retractable design with a host element.

Thus, each consumer will be able to choose a type of antenna that will meet all needs. This factor must be taken into account when buying a device.

Antennas for FM Radio: Features, Model Overview, Connection

Antennas for FM Radio: Features, Model Overview, Connection

Review models

Currently, the market presents a wide variety of antennas models for radio (street, frame, narrow, indirect, with resistance in 75 ohms and other varieties). Today in our article we will look at the best and most popular specimens.

Anli A200MU (N, 8DB, 1.80m, 420-512mhz)

The market value of such a device is about 8,000 rubles. Antenna is suitable for installation at a standard base station for functioning by radio channel. In addition, there is an active intensification of the signal in 8 DB. The height of the device is about 2 meters, so it will contribute to an increase in the transfer area of ​​the transfer of corrections to work in RTK mode.

Antennas for FM Radio: Features, Model Overview, Connection

Antenna for Radio MP3 Players – 1TopShop

The antenna refers to the type of retractable and Plugged type 3.5 mm. The outer case of the device is made of metal and plastic, so The unit has a moderate strength level. The device is suitable for mobile and automotive radio.

Antenna can be attributed to the category of monofirectional.

Antennas for FM Radio: Features, Model Overview, Connection

RH-660S

This is a double telescopic antenna model for radio. It is made of plastic and copper. Perceived frequency range – VHF: 136 ~ 174 MHz / UHF: 400 ~ 470MHZ. The maximum power of the device is 10 W.

Antennas for FM Radio: Features, Model Overview, Connection

REXANT 34-0551

This model of the room antenna for radio Equipped with a special suction cup, which simplifies its operation. The device can perceive radio broadcasts in 2 bands: VHF and FM.

The antenna works great in combination with any devices equipped with a coaxial connector.

Antennas for FM Radio: Features, Model Overview, Connection

Antennas for FM Radio: Features, Model Overview, Connection

How to connect?

The process of connecting an antenna to the radio can be carried out in several ways. Consider the main ones.

Direct way

Thus, telescopic antennas are usually connected to. These antennas are an integral component of a radio receiver. It should be borne in mind that With this method of connecting the so-called “phase of the Earth” is the case of a radio device. The level of active resistance is about 30 ohms. At the same time, reactive resistance can be completely eliminated – this effect is achieved by rewriting the contour of the resonance. Keep in mind that this type of antennas is asymmetrical.

Antennas for FM Radio: Features, Model Overview, Connection

Antennas for FM Radio: Features, Model Overview, Connection

Nonresonant food

In this case for connecting Antennas is used specifically designed for these purposes. It carries out directional radio waves. It is worth keeping in mind that Wave resistance should be equal to its antenna.

If you select this type of connection, then you will get rid of losses and create the highest level of radio signal.

Antennas for FM Radio: Features, Model Overview, Connection

Antennas for FM Radio: Features, Model Overview, Connection

Resonant nutrition

For such a connection you will need feeder, The length of which must be half less than the length of the wave. By itself, the wave resistance indicator is not key, since the antenna is agreed. The device perceives the frequency that is by its nature is carrier.

Antennas for FM Radio: Features, Model Overview, Connection

The connection method should be chosen depending on your preferences, as well as the technical and functional characteristics of the antenna itself.

How to make himself?

The antenna of the considered type is not necessary to buy in the store, it can be done with your own hands. To do this, you will need some materials. Among them:

  • Transformer core (you can take a previously used element, for example, from the old TV);
  • fixing material (for example, tape or tape);
  • foil (you can take the material from copper or brass);
  • Copper wire (needed 1.5 meters);
  • Pins for connecting.

Antennas for FM Radio: Features, Model Overview, Connection

Antennas for FM Radio: Features, Model Overview, Connection

Antennas for FM Radio: Features, Model Overview, Connection

    So, first of all It is necessary to put the initial layer of the winding, which will be a ferrite core. From above this element cover with tape and foil. Now it is necessary to wind up 25 turns of the wire – they will be a blank for the screen. The wire is recommended to wind out with overlapping in 1 centimeter – it will contribute to high-quality isolation.

    At 7, 12, as well as 25 turns need to make a mandatory. The contour needs to be combined with the rest of the items, and the edges of the wire insert into the pins. It should be borne in mind that the decoration of the 7th turn must be introduced into the grounding socket, and the 12th and 25th – connect to the antenna terminals.

    At the end of these processes, it is necessary to configure the reception of the radio signal according to the active scheme. For this, a simple selection of winding connects to a connected contour.

    Thus, Antenna is the most important element of the radio. It is very important to pay close attention to this item and carefully approaching it.

    About how to make an FM antenna with your own hands, look in the following video.

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