The Trunking Systems and the Working of Other Radio Systems for Security and Entertainment

In the past when the mobile phones were not available and it was not within everybody’s means to have landlines with the STD and ISD connections. The Telephone Exchange used to offer the use of trunk calls, to where ever you needed.  This was possible with help of the Trunking systems.

The idea of trunking , in which a main telephone  switch board with many connections that use a same  sound wave length  can use instead of each one being allotted a different personal  link. A miniature form of the trunking system can be seen in offices where a telephone operator and intercom systems are used. 

With the use of the two way radio handset, called walkie talkie, nobody can complain about the communication amongst the working team or other group members. But, yes, one has to watch the area coverage by the walkie talkies. The walkie talkies were originally designed for the exclusive use of the police and security force.  Later on the commercial models of the same were sold in the market for the use in many professional fields like construction.

The PMR radios were replaced with an advanced version called DMR radio or the digital mobile radios. The DMR offers talking, information and various other facilities and aspects. The chief motto of the DMR is to offer an easy to handle, minimum price factor and inter usable feature with all the other brands.  

Instead of using many radio sets and other connecters to improve the reception range of the service repeaters are used at intervals to increase the area of reception of conversations, information and other features. Tetra or the terrestrial trunked radio is movable radio working on two frequencies. Tetra was patterned mainly for the use of various departments of the governing bodies and other SOS services. 

An Array of Radios Available for People to Use for Entertainment and Work

Covert radio is a small radio used for security purposes. But of course it can be used for wrong ulterior purposes. It all depends on the user. It would be a welcome step, if it is used to safeguard personal belongings. This piece of radio is to be worn by a person in hidden manner.

The tetra version of covert radio is the latest introduction in the market. The compactness of the model makes it very easy for people to wear it without being spotted by anybody. This is an ideal model that can be used to spot a wrong move in the locality.

Covert radio can be operated from a long distance. This device can identify the voice of the people selected. In case of long session of vigilance use it’s quite a surprise that this tiny instrument can seek the person requiring help and also the people using it.

A radio that can be used to send and get a talking session is called a 2 way radio. A two way radio permits the user to chat with the other radio users on a same radio station. The 2 way radio is available in cell phone, held in a hand or a radio kept on a table. With the television and other electronic goods switched over to the digital technology the two didn’t lag behind and lo! Digital two way radios emerged.

The PMR radio or the professional mobile radio is a version of a two way radio that is used by professionals to enhance their business or career. A licence free radio can mean that licence is not necessary or it is not charged. This radio can be used by anybody who wants to get in touch with family or friends without worrying about the call /roaming charges.

The Current Scenario of the Uses of Trunking System and Two Way Radios

In the latest methods of interacting with people, the trunking system makes available a set of connections, in various wavelengths, instead of providing individual connection to each person. A specimen of this can be seen in the telecommunications or the ‘VHF’ radios that the security force uses. This technique can be used in computer network.

Trunking system also means the links of buttons and routes in the telecommunication department. A maximum output is gained using few connections. It is also used by the government to support the fire extinguishing department, police and other security departments with the 2 way contacting system, if a same frequency or wave band is shared.

An improvisation of this can be noticed in the use of trunked radio. A two way radio method is used by a large group of individuals instead of using a personal set.  Whenever a group member wants to chat with another person from the group, an unused channel is located and used to converse with the others. The main unit controls and helps the working of the other radios in the system. The chief aim of the system is the proficiency of service a classic example of this is the Tetra Radio.

Terrestrial Trunked radio popularly known as Tetra Radio is a specialized 2 way radio with a walkie talkie gradation. Tetra was mainly created for the exclusive use of the ‘government ‘organizations, armed force and the railways and al the SOS teams. The radio works on TDMA using 4 radio routes. Tetra is designed to justify the European standards.

DMR Radio or the Digital Mobile Radio is an improved version of the professional mobile radio (PMR). DMR offers audio, video coding and other added services. The main purpose of the DMR is to be cost effective, to be able to connect with all types of types of radios. The specifications are mainly to help the buyers with a range of radio solutions. This model is useful at construction sites where the other forms of mobile communications fail to offer the expected services.

The two way radio is a radio that can offer both functions of sending or getting alerts. The 2 way radio is also called a walkie talkie. The instrument can be used within a coverage area of 2-5 miles. Mobile phones are apt instances that fit the definition of a two way radio because it uses two wave lengths to send and get the talk exchange.

Metro Communications offer the best services in supply of the communication service to the residential, commercial complexes and industrial houses. They have all the PMR/DMR models, because the company believes in satisfying every customer. The success of the company lies in their efficient and fast work to satisfy a customer.

Are Walkie Talkie Radios Really Helpful for Mass Safety and Security?

Mass safety and security should always be in hands of responsible people. But even they need proper communication and coordination to conduct thins at right time, which is only possible with wireless radios. These types of radios enable police, military and such governments to communicate without any limitation of wire, network or data. These systems are known as PMR radio systems (professional mobile radio systems).

They work on two way communication system and so are also known as 2 way radio. Such latest radios have trunked and digital message transfer system. The trunked system allows them to communicate to more than one person at a time (i.e. point to multipoint) and also one to one (i.e. point to point). While digital message transfer systems helps them to communicate through legible messages. These types of systems are nothing but open digital platforms for PMR radios and are known as digital radio (DMR).

There may not be a better system of communication than this, which is also capable of breaking network barriers like high-rise buildings, mountains, and such. That is why such wireless radios are given to organizations and systems that are involved in public safety and security like police, frontier guard, ambulance, fire services, etc. A police radio / safe radio / covert radio can also be used by private companies for mass or individual security reasons. These radios are easy to operate and are comparatively cheaper than other means of communication. License is required to use such systems and so they are used only for safety and security reasons.

Radio Systems That Gives You Extra Security

Security officials are like the backbone of every, city, state and country. Their need should be given priority, especially when it is for the better of people. For their frequent and interruption free communication they should be given latest portable radio. These radios should have all the latest facilities that allow it to work even in remote areas or the areas where there is lots of frequency disturbance. These systems for metro communications is capable of working in weirdest frequency interruption and that is why it is necessary that the systems are of best quality with latest networking systems enabled.

In metropolitan areas where there are high-rise buildings it is necessary that the best 2 way radio should be used that too with the support of repeater system. The repeater system transmits the frequency at high altitude so that it can reach far distance without any problem or interference.

Taking this system further to another level many companies have started combining trunking system. The digital radio India is best useful with this system as the system allows people to communicate in mass along with sending visible messages that analog networking radios were not capable of. Moreover, this system is affordable and is capable of working in tense network areas. This system is very useful for civil security purpose, it is equally useful for private security purpose, but for mass security it is the right thing to adopt.

PMR solution is the latest technology that these companies provide and is best seen with TETRA radio (Terrestrial Trunked Radio) system, because it allows people to communicate in group and also one to one. In India, airport radio is also mostly of TETRA system.

Development of Digital Two Way Radios

Information and Technology has developed rapidly within last decade and now in 21st century the means of communication has reached a level where there is no barrier to it. Now people are free to use individual network lining and can avoid any bad audio quality or fading problems. There are trunking systems that allow better radio frequencies without any line breakage or fading. These systems are comparatively cheaper to older individual lining system.

The digital radio broadcasting technologies now has developed better systems and networks for digital two way radios giving the PMR radio better options to connect and work. These are 2nd generation radio systems and as they are two way, you can both transmit and receive message. These radio systems are most useful for security agencies for individual and mass protection. Police, fireman, military and such security agencies use these types of radio mobile systems. 

These systems can be of different types, depending upon their use they can be mobile, stationary base, and walkie-talkies. To work these types of radio the networking system needs different levels of support and backup. Such supports should be provided without any interruption and for this a direct satellite network connection is also maintained specially in the case of military and high level security systems. In mountain areas the network gets blocked by different blocks and frequency mix and to solve this problem repeaters are used. A repeater takes the message and retransmits it to higher level so that the message goes without any interruption to long distance.

Digital Mobile Radio (DMR) is an upgraded open digital radio system for Professional Mobile Radio (PMR) and to support them the ETSI (European Telecommunications Standard Institute) made Terrestrial Trunked Radio (TETRA) system. It is a two way receiver and is best for mass security purpose, because with this system one can transfer and receive message from point to point and from point to multipoint and vice-versa. These radios can also be operated hands-free and so can be referred as covert radio. 

A digital licence free radio is latest addition to two way radio system that gives you charge-free communication facility. This system is used for private use and they work with the help of repeaters and internet. The only drawback of this radio system is that they work only within few kilometres range that too if the area is clear and viable for PMR and DMR frequencies.

India Needs Tension Free and Latest Walkie Talkie Systems

India has second largest population in the world, and with such population the security concern obviously increases. Indian government has already started using PMR Solutions for better communication between the security professionals. Railway, airways, and marine department of India have been using latest PMR metro communications since a decade. But the development never stops, with time threat and terrorism increased. To control the chaos and maintain order and peace Indian security system also has to upgrade from PMR to Digital Mobile radio (DMR).

It is not that the PMR is outdated technology; in fact PMR and MPT trunked radio is one of latest and most useful technology. The same technology is used in Digital mobile radio, but because PMR is limited to audio messages and DMR allows audio, video, and other forms of communication with additional facilities, DMR is preferred. The advanced method of trunking is used in TETRA radio. TETRA (Terrestrial Trunked Radio) uses Time Division Multiple Access (TDMA) that allows the transceiver to send and receive message to more than one channel (system) at a time.

Repeaters are installed in places where high rise buildings, mountains or cliffs are available. The repeater receives the message and re-transmits the same on higher altitude so that it can reach far distance without being destroyed or tempered. A marine radio has all these facilities, but there is no end for improvement. The system with TETRA support is also capable of communicating short data services and status message that was not previously possible with analogous system.

These are two way radios and are generally referred as security radios. Development in security is necessary and Indian government should select the best two way radio India for the security of 121 million people living in India. With the focus on tension and network free system which is quite possible with the help of TETRA and repeaters. There is not much difference between the price of a professional mobile radio (PMR) and digital mobile radio (DMR), so why not choose the best available digital radio India. Motorola, Hytera, vertex Standard, Simoco group, Radiodata, and Tait Communications are among the best international companies that manufacture PMR and DMR devices.