The creation and development of radio systems at one time produced a real revolution in the world of show business. These are simple, but at the same time, the brilliant devices freed the performers, singers and actors from the need to keep the microphone, gave them the opportunity to move freely on stage, gesturing and complementing their vocal numbers choreographic productions. About what is radio systems that they are and how to choose the optimal model, we will tell in our review.
Radio systems are a sought-after view of sound equipment. As a rule, they include a set consisting of a microphone, a built-in transmitter, as well as receiver. The whole design connects to the recording device or to the mixing console. There are a large number of varieties of radio systems that can be used in versatile events.
The principle of operation of radio systems is simple: For information transfer, certain sound frequencies are used here, In this case, one device can serve several frequencies – the most expensive models are capable of doing it even in parallel. The devices of the highest category are characterized by an increased degree of protection of the radio channels used from interference, “jamels” and wiretapping.
In hand-type transmitters Usually apply dynamic vocal microphones. They are intended to interact with a person’s voice.
Alternative to them are made Compact petrolery microphones or headsets, which often use circus actors, as well as theatrical artists – during the execution of their numbers they need maximum freedom of action and unoccupied hands. Similar devices easily can be hidden under a wig or hairstyle, and the transmitter can even be fixed on the body under clothes or directly on it.
Many users are interested in the quality of the sound quality of such radio systems, especially in cases when it comes to manual models. It should be noted that in this aspect, progress today has reached truly amazing heights.
Today for a small cost you can buy a high-quality microphone, which is suitable for use in a variety of spheres.
According to the type of radio signal, the device is analog or digital, as well as wired and wireless. In its purpose, they are divided into vocal and instrumental, petrolery and head.
Depending on the number of antennas, single-channel, two-channel, and sometimes even quadant systems. At the same time, the greater the number of antennas, the more stable will be the received signal, since the sound is broadcast for each of them.
According to the number of transmitters, microphones can function or with one, or immediately with several, the second approach is considered more practical. But the cost of such products will be much higher.
Let us dwell on some of them. Analog radio systems are divided into two groups:
- VHF – operate in the range of 174 – 216 MHz;
- UHF Systems work in the frequency range of 470-805 MHz.
UHF belongs to a more professional category and there are several reasons:
- practically not subject to third-party interference coming from other equipment;
- can receive a signal at a considerable distance, since the UHF signals are much faster through the atmosphere;
- In this corridor a little more unoccupied frequencies, while part of the frequencies in the VHF corridor is assigned to the share of digital television.
By the way, the last type of signals should be considered a little more. Digital systems are relatively new, but have already received a number of serious advantages in comparison with analog:
- In digital systems there is no need for an incoming signal, which leads to a serious quality loss;
- During signal broadcast, there is no RF interference;
- The digit is equipped with 24-bit convectors;
- Digital signals have a much larger dynamic range;
- they are easy to use, they are distinguished by accuracy.
Before selecting the optimal radio system for you, you should decide on what kind of purpose it is necessary for you. And already depending on this, select the configuration so that it contributes to solving specific tasks.
Tool radio systems able to interact with practically with any tools. However, in most cases, they are in demand among guitarists, as well as bass guitarists. The models include a special set consisting of a receiver and a native radio station – it is attached to the belt belt, it connects to the tool itself by a shortened cable. In separate radio systems, the transfer is connected directly to the exit of the guitar, in this case it costs completely without a cord.
Vocal Radio Systems allow singers, actors of a conversational genre, as well as leading and lecturers to keep freedom of movement. As a rule, the kit includes radio microphones and base. In some cases, a mixer connection is required, as well as an amplifier and some other headset.
Petcharge is a compact microphone with a clip, it is fixed to the user’s clothing. Among the main benefits of petrolery microphones, miniature can be distinguished, maximum comfort in use, but most importantly – they can be applied in the most unfavorable acoustic conditions, for example, in a situation where there is some other equipment and the microphone nearby. The design of the petakers minimizes any background noise and sound distortion. One of the distinguishing characteristics of these models is increased speech intelligibility. The list of advantages of petrolery microphones does not end, you can also note:
- the ability to combine them with the most different equipment;
- convenience of fasteners;
- imperceptibility when wearing;
- opportunity to use on the street.
Users who need free hands during operation, also often acquire head microphones. Such a model implies fixation on the head unchanged at one point near the mouth, due to this sound quality remains steadily high.
Where are used?
Radio systems found their use in those sectors where it is necessary to provide a speaker or a human speaker with a qualitative increase in voice sounding, but at the same time maintain its autonomy and freedom of movement on various locations. That is why the device is universally used at festival sites, during concerts, in lecturing, training audiences, conference rooms, as well as at sports facilities. Blog players are popular for bloggers.
In addition to the above, with the help of radio systems, communications within the members of one professional team. For example, on the set, at airports and on any protected objects, where they constitute a good alternative to the radio.
Among the variety of radio systems, the most popular are the following.
SAMSON AIRLINE Micro Radio System
It includes two basic models. The first allows you to install a smartphone on a video camera and a camera, it is used to record sound in high quality and synchronization with a writable video record. The second model looks like a compact transmitter that is fixed to the ear. The basis of the radio system is a portable receiver. The model is optimal for fitness instructors and coaches on aerobics, it is also often used during seminars and conferences.
The models of this brand have waterproof radio transmitters, batteries, which for a long time support the device in a working condition, as well as convenient docking stations, with which, if necessary, you can quickly recharge the device.
Such radio systems are characterized by a rich set of accompanying accessories, and stylishly look and have a very decent quality of assembly.
Sennheiser Radio System Digital 9000
This digital type radio system consists of an 8-channel module, as well as several transmitters, due to which high-quality data transfer is provided. Such a solution, according to the manufacturer, brings the quality of the microphone to wired devices, and the modular design allows you to improve the radio system if necessary.
There is a built-in option for automatic signal loss compensation and sound spectrum analyzer. Includes a belt or pocket transmitter, allows you to connect a paste microphone.
Radio System Shure PG Series
These are installations of the UHF- range, they contain directly transmitter, which is fixed on the belt, handmade vocal microphone or headset.
ULX Standart Radio System
Designed for conferences and seminars. It is a pocket or waist transmitter containing a petitioner that is attached with a thin cord.
How to choose?
The type of microphone is not the only technical and operational characteristic on which attention should be paid when buying a radio system. It is very important to clarify Sound radiation diagrams. This parameter fully reflects the number of directions in which the installation captures the sound. If the equipment is unidirectional, then at the time of operation it will have to be kept smoothly towards the source of the sound, while the heads of the omnidirectional devices are able to receive signals from all sides.
Singers who use special floor monitors, usually prefer manual transmitters with a cardioid or supercardoid diagram – it is such models to zero the risk of interference. Omnidirectional microphones more often used in the organization of presentations and seminars.
However, if the performance will be held on the open area, the omnidirectional chart will be more disadvantaged, since the wind movement will cause significant interference.
His features are available when choosing radio systems of each type. So, when buying an instrumental microphone, it is necessary to take into account that standard speakers include a receiver, as well as a transmitter and a small cord, with which the system connects to the musical instrument. If you do not want to use a cable, you should choose a wireless system.
Be sure to specify the number of antennas, as well as the perceived frequency range. What it is more, the bigger the radius of the headset. Not bad if the system provides automatic frequency selection – such a solution allows you to reduce the appearance of background noise.
Standard vocal type radio system includes a wireless microphone and directly database. Most often, the performers choose manual microphones, but if they are fundamentally important for them to free their hands, it is better to give preference to the products with a loop or headband.
The working range of such systems usually does not exceed 100 m if the parameter is exceeded, sound interference may occur.
During the purchase, rate the power source – it may be batteries or batteries. With intensive use, the battery will quickly discharge.
Preference is better to give such models in which several microphones can be connected to a single database. It will cost much cheaper than the acquisition of a large number of separate systems immediately.
The main advantage of petrolery microphones is their miniature sizes, due to which the speaker system practically does not attract attention. When choosing the optimal model, you need to evaluate the proposed products by such criteria as:
- convenience of fixation;
- additional functionality;
- duration of autonomous work;
- sound sensitivity;
- Ability to align with another microphone acoustics.
Head microphones usually prefer specialists from call centers and lecturers. It is very important for them that the device is soft and easy. Otherwise, with a long-term sock, the user may have discomfort.
Overview of the STAGG SUW30 Radio Systems See More.