DMR Tier III: the open standard for radio communications

The basis of the post is to make you consider what in life is significant and what does getting the new Two way Radio really represent to people

Private mobile radio is fast becoming an essential communications solution to support the operational needs of utilities companies, airports, oil and gas pipelines and emergency services.

When compared to public cellular services, it delivers improved coverage, reliability and resistance, contention, security, group communications and performance.

The digital landscape is crowded, though, with a number of public safety digital standards such as TETRA, P25 as well as low cost digital solutions including DMR (Digital Mobile Radio), dPMR (digital Private Mobile Radio), NXDN and PDT (Professional Digital Trunking).

DMR is coming out on top thanks to the open standard nature of DMR Tier III trunking, which is driving its emergence, ongoing development and adoption across global markets.

But do open standards matter? While open standards are less important in the small system market, they are critical to the long-term case for the radio system in the medium to large systems sector, and it is here that open standard DMR Tier III will dominate.

Essentially, DMR Tier III trunking features a control channel on each radio site and allocates traffic channels on demand making it frequency efficient and enabling a large number of users to share a relatively small number of channels. Radio sites can easily be inter-connected, usually using IP connections, making it possible to deploy systems ranging from a single site to hundreds of sites spread over a large geographical area.

The open standard way

The DMR standard includes the facility for implementers to provide ‘manufacturer extensions’, enabling manufacturers to provide proprietary features within the framework of the DMR air interface definition. This allows them to complement the standard set of DMR call functions with their specific facilities.

This has the advantage of enabling customers to request specific functionalities to support the manufacturer’s business operation needs and also enables them to provide innovative features that differentiate their solutions from others implementing the same standard.

One disadvantage to this offering is that interoperability can only be possible for those features that are fully defined by the standard and that customers using manufacturer extensions are effectively locked in to a single manufacturer solution rather than enjoying the vendor choice that a standard enables.

To address the pros and cons, the DMR Association (DMRA) has struck a balance between robustness and cost with their interoperability process, which focuses on testing the conformance of products against the published standard that describes the over-air signalling. The DMRA facilitates testing between a terminal manufacturer and an infrastructure manufacturer, and the two parties carry out the testing against a standard test specification. Test results and logs of all messages sent over air are recorded during the testing and then are inspected by one or more independent third parties during a detailed review meeting. Only after the independent third parties are satisfied that the equipment under test has conformed to the open standard specification is an interoperability certificate issued.

Ongoing standards development

Whilst this facility can be useful, extensive use of manufacturer extensions would call into question whether DMR was a standard that delivers interoperability (and therefore vendor choice) or whether it results in proprietary solutions rather than following an open standard.

The answer to this lies in the work of the DMR Association. The DMRA has a technical working group – made up of competing manufacturers – who collaborate to ensure the standard succeeds. Any proprietary features from the manufacturers, which are believed to have wide market appeal or have useful features the standard doesn’t yet specify, are debated in the group. They are then developed to further advance the standard to the benefit all of the manufacturers and indeed the customers who choose to implement DMR technology.

The DMRA is further developing the standard to meet future market demands by identifying important new features and ensuring these are developed and included in new releases of the ETSI standards.

The future of DMR Tier III

Open standards are critical to providing long-term support and stability to customers. The adoption of the standard by a critical mass ensures its longevity over other similar competing technologies that have lower levels of support by offering the market vendor choice and maintaining low costs.

Is DMR Tier III radio communications’ open standard for the future? Yes. Due to DMRA’s authority, the robust and well-supported interoperability programme and the long-term commitment of a large number of manufacturers, it is emerging as the most successful low cost digital technology for complex projects – and therefore the open standard that no other private mobile radios can contend with.

Source – http://www.telecomstechnews.com/news/2014/apr/25/dmr-tier-iii-open-standard-radio-communications/

Icom Radio Earpiece: Technology at its Best|Where to get a Icom Radio Earpiece}

We’re residing in a world that revolves around technology’s latest innovations. Communication forms the backbone of every business in the world. Global operations function effectively on quality based communication systems. Discrete communication systems are setup for the purpose of sending, receiving and regulating information to the right destination. If you wish to ensure steady communication between recipients, secure and effective equipments must be utilized. Of this, the two way radio is a popular tool in demand. If you’re an avid user of the two way radio, then combining this technology with the Icom radio earpiece brings about effective communication. 

Benefits of Icom Radio Earpiece

The earpiece technology comes alongside a microphone that allows you to convey information across. The Icom radio earpiece is comfortable and doesn’t expose the two way radio during usage. While keeping the radio attached to your belt, the earpiece easily conveys sound waves as input and excellent output. Now imagine having a radio that is almost portable and doesn’t risk the chance of being dropped or exposed to environmental hazards? Extend the usage and life span of your radio by using Icom radio earpiece that has become a popular choice today. The earpiece can be easily accommodated inside the clothing for its small size and lightweight. Four distinct kinds of two way radios have been presented that occupy four types of Icom earpiece connectors. 

The available Icom radio earpiece connectors have a sleek design that performs tasks while using two way radios. The earpiece has been configured particularly for certain task however it can easily be compatible with a number of other features. It is important to check if the Icom radio earpiece is compatible with the type you own. The radio earpieces offer quick communication with instant connectivity. A good example is when you have a straight pin connector that functions well with marine radios. If such a connector is used for domestic radios, the audio quality can differ greatly. 

Every radio purchased is unique and is meant for transmitting information in distinct environments. Hence while choosing the kind of earpiece you want, there are certain assets considered before purchasing. The Icom radio earpiece offers optimum level of consistency and performance based, it is the best. The earpieces improve sound quality in environments like fleet and transport, healthcare, real estate, security, shipping etc. Icom has ensured that its particular edition of two way radio earpieces performs certain tasks. 

Features of Icom Radio Earpiece

Besides having excellent compatibility with two way radios, the brand composes the earpiece from high quality cables with durable surface. Such material protects the cable from wear and tear and offers a decent strain relief. Icom radio earpieces are lightweight yet are protected from damage in worst case scenarios. You wouldn’t want to lose connection while using the radio however the Icom earpieces have excellent connectivity. 

The earpieces can easily withstand consistent collisions and will continue working despite undergoing strain. They have the capacity to work reliably in every condition. This particular radio earpiece is different because it has a tough framework. Unlike other weak cables that get damaged after withstanding massive strain, Icom makes a massive difference. 

The earpieces have been designed in such a manner that they care encased inside your ear canal consisting of a microphone that is composed of high impact polycarbonate. This ensures that communication is uninterrupted and noise proof. The acoustic tube can be easily replaced and removed if it gets damaged. The button or controller that allows one to communicate is placed in your hand than on the collar. Knowing its capabilities, security companies have begun utilizing this gadget for its hi-tech features comfort. 

Conclusion

It comes with a smart three wire design having separate connections with the microphone and the main control system (push to talk button) ensures that your conversations are instantly connected. Any kind of interference caused by external agents is eliminated making the gadget absolutely noise proof. Enjoy connecting with clients, colleagues while coordinating events and communicating with your loved ones. The Icom radio earpiece is a modern invention that has surpassed expectations in the world of communication. For two way radios, the Icom earpiece technology has been claimed as one of the best communication tools of the world. The durability and snug fitting makes it the ideal earpiece for ensuring prolonged communication. 

What Is Covert Surveillance?

With very little information on the internet about earpiece’s, it is very rare when we get a chance to re post, with permission, an article from this industry.

Covert surveillance occurs when someone or something is being observed without knowledge. People who are under surveillance are most often under suspicion. Locations and buildings are primarily observed because of suspicious activity or to obtain information about a suspect.

covert surveillance Covert surveillance is generally performed by government agencies, private investigators or business owners. Intelligence organizations such as the Central Intelligence Agency (CIA) of the United States and the United Kingdom’s Secret Intelligence Service, also called MI6, participate in surveillance to obtain information for national security interests such as counter terrorism. Law enforcement agencies such as the United States’ Federal Bureau of Investigation (FBI) or the International Criminal Police Organization (INTERPOL) also perform surveillance. They concentrate on observing suspected criminals.

Private investigators perform covert surveillance for a variety of reasons. Husbands and wives hire private investigators to prove or disprove suspected infidelity. Businesses hire private investigators to observe employees who are suspected of fraudulent activities or former employees that may be breaking confidentiality agreements. Insurance companies are notorious for using private investigators to put claimants under surveillance to ensure they are not submitting a fraudulent claim.

Many business owners participate in covert surveillance of their employees and customers. Observing employees while they are working gives business owners valuable information, such as employee production and employee theft. Covertly observing customers can aid in marketing and research efforts and most importantly account for loss due to theft in retail businesses. Retail businesses can also use information obtained through covert surveillance to prosecute shoplifters.

A surveillance operation may be carried out in a number of ways. Agency employees and private investigators may choose to observe a subject without the aid of sophisticated technology, using things such as binoculars and cameras. However, in an age of modern technological conveniences, it is safer, cheaper and more convenient to use surveillance equipment.

Closed circuit television systems (CCTV) are one of the most popular ways to carry out covert surveillance. Cameras come in all sizes and can be placed inconspicuously almost anywhere. In order to obtain audio, wire taps can be placed on phones or audio surveillance equipment may be hidden in a suspect’s office, home or vehicle. Other ways to perform covert surveillance include aerial surveillance and the use of global positioning systems (GPS). A GPS placed on a person or moving vehicle can be tracked to monitor movement to specific locations. Similarly, aerial surveillance carried out by national governments can track objects on the ground.

 

What is an Acoustic Transducer?

What will you do if i stated I had found a earpiece short article that isn’t only fascinating but educational also? I knew you wouldn’t believe me, so here it is the educational, excellent and fascinating editorial

An acoustic transducer is an electrical device that coverts sound wave vibrations into mechanical or electrical energy. They have various practical applications, including sound recording and sound playback. A specialized model, called an ultrasonic acoustic transducer, can be used to measure distance to, as well as the mass of, an object.

Common types of acoustic transducers used in sound recording include microphones, earphones, and guitar pickups. These create electrical energy when moving parts inside the transducer, such as electrical plates or ribbons, are exposed to sound vibrations. The electrical energy produced inside the transducer is sent first to an amplifier.

The amplifier then sends this energy to its final destination, usually a loudspeaker or recording device. The loudspeaker reproduces the sound at a level that the human ear can hear. A recording device will retain the electrical signal information. The recorder will send the stored signal to a loudspeaker during playback.

An ultrasonic acoustic transducer can be used to measure distance or the mass of an object. The most common type is the piezoelectric acoustic transducer. These include a piezoelectric ceramic element that creates and distributes ultrasonic sound waves.

Sound waves travel to an object from a piezoelectric transducer through material called a couplant. The couplant is usually water. Sound waves bounce off the object and return to the transducer in the form of an echo. The time it takes for these echoes to return to the transducer is used to calculate the distance to the object.

Underwater sound navigation and ranging (SONAR) is a common use of an ultrasonic acoustic transducer. SONAR uses directional beams of sound waves. This enables the SONAR operator to determine the direction and distance to an object.

SONAR systems can be active or passive. An active system sends out sound waves and listens for echoes. A passive system listens for noises made by ships, fish, and landmasses.

An electromagnetic acoustic transducer (EMAT) is another form of ultrasonic transducer. Instead of a ceramic element, an electro magnet is the main component of an EMAT. This is a type of non-contact, or non-destructive transducer. Unlike piezoelectric transducers, EMATs do not need a couplant to carry sound waves. Instead, two electromagnetic fields are generated to disburse ultrasonic waves.

EMATs can easily be used almost anywhere since no liquid is needed. For example, EMATs can be used to check for flaws in underground pipes. A downside to EMATs, compared to piezoelectric transducers, is that EMATs create weaker sound fields.

 

How do I remove the wax from my hearing aid?

Asked by Colin from Leicester

Hi Colin, Before we start, can I ask if you have false teeth at all?

I know what you’re thinking, “Oh, just because I have a hearing aid, I must have dentures as well! Bloody cheek!”

Well stop. I assure you, I’m not thinking that. The reason I ask is that you will need some denture cleaning tablets for the procedure I’m sharing with you, that’s all.

Anyway, if you don’t have any tablets, go out and buy some (they are usually quite affordable, in fact, I think I saw some in the Pound Shop once).

Once you have the tablets, read this next bit (see, here I’m assuming that you DON’T have any false teeth, happy now?).

OK, first of all, you need to detach the earpiece and the tube from any electronic components.

Once you’ve done that, make a small ‘bath’ big enough to fit your hearing aid earpiece into. It is imperative to use a clean glass, in order to avoid infections (“Oh, I see, now my cups are dirty!?” he says. Maybe). Add the denture-cleaning tablet to the glass and let it effervesce (which is a lovely word that I don’t get to use nearly enough, so thank you for that).

Next, soak the earpiece and the tube in the water. DO NOT add any electrical components to the water – I’m sure you won’t, but I have to make sure that other people – stupid people, if I’m honest – don’t ruin their hearing aids and them blame me for it.

Finally, take the earpiece and/or tube and allow them to dry on a clean surface. It is best not to try and manually dry the earpiece because you’re likely to miss a bit (“Oh, I see! I can’t dry off a little bit of plastic now, is that it!?” – I imagine you saying). I say this because a wet hearing aid can damage your device and also cause ear infections.

Finally, when all is dry, simply put your hearing aid back together and start living your wax-free life.

I hope that helped (and that you didn’t mind my good-natured ribbing!)

How does an aeroplane’s ‘black box’ work?

After doing a little research, I can now tell you (basically) everything you ever wanted to know about black boxes…

In the average commercial aircraft, you’ll find the presence of multiple (usually four) microphones in the cockpit at any given time. They are located in the pilot and co-pilot’s headsets, as well as in the cockpit itself. Not only do these microphones record conversations between the pilots and cabin crew, they also record any ambient noise (such as switches being thrown or sounds generated by technical issues). The microphones all connect to the cockpit voice recorder (CVR), a master unit that stores the last 30 minutes of sound. The tape operates on a loop, essentially erasing itself every half hour.

This device is known colloquially, but a little misleadingly, as the ‘black box’ (it is usually quite brightly coloured in order to make it easier to find in the unlikely event of an accident). Another device also referred to as a ‘black box’, is the flight data recorder (FDR), which automatically records data regarding the plane’s flight path, speed and movements in the air. Although the devices are distinct from one another, the information they record goes to the same place and is used for the same purpose, thus their shared name of ‘black box’.

In recent years, manufacturers have moved away from magnetic tape-based CVRs and FDRs and towards ‘solid state technology’ boxes. These improved devices store the relevant data on memory boards, which can hold up to two hours of cockpit recording and 25 hours of flight data. The solid-state devices are also sturdier than their tape-based counterparts.

Crash survivable memory units (CMSUs), are large cylinders that back up all the relevant data and are designed to withstand extreme heat, pressure and violent impact. They are typically contained within the box itself. In the more severe accidents, the CMSU is all that survives of the black box.

The black box, then, simply records all the relevant data before an accident occurs. This serves to provide engineers with an explanation for a crash, as well as providing investigators and regulators with the same information.

So there you have it, of course, a lot of information is stored in an aircraft’s black box (much more than I’ve detailed here), but as a general example, that’s what it is and how it works. Hope that helps. 

New Analog-to-Digital Migration Guide Helps Users Take Advantage of the Latest Technologies

This website was appealing to us so i just wanted to share with all my readers

All around us, the wireless world is going digital. But organizations have questions about this breakthrough technology. To provide them with answers, BearCom and Motorola Solutions teamed up to create our Analog-to-Digital Migration Guide: “Five Reasons to Migrate to Digital Two-Way Radios.”

“A ‘smart’ revolution is transforming two-way radios,” the guide begins. “Digital technology is opening the door to a host of useful web-based applications for two-way radios, even as it enhances capacity, coverage, audio quality, and battery life.”

Available as a free download from BearCom.com, the guide details how digital two-way radios offer additional functionality, greater efficiency, enhanced coverage, improved audio quality, and extended battery life compared to analog radios. It explores the capabilities and benefits of the latest radios, the differences between analog and digital technologies, and the process for making a smooth transition to digital.

“There are plenty of exciting new digital two-way radio products available,” reads the cover letter from BearCom President & CEO Jerry Denham. “This new Analog-to-Digital Migration Guide is the latest tool we’ve developed to assist organizations around the country as they harness the power of digital performance to improve their communications capabilities.”

The guide includes details on the MOTOTRBO line of digital two-way radios from Motorola Solutions and the new Motorola CP200d, which was made available through BearCom last summer. In developing the CP200d, Motorola Solutions was able to retain the simplicity and durability that have helped make the Motorola CP200 analog model popular across a wide range of industries.

The guide also answers frequently asked questions, such as:
Why should we go digital?
How are apps useful in two-way radios?
Will analog radios become extinct?
Are my analog two-way radio accessories compatible with digital models?
How can I get the best value when selecting digital two-way radios?

- See more at: http://blog.bearcom.com/2014/01/new-analog-to-digital-migration-guide-helps-users-take-advantage-of-the-latest-technologies/#sthash.hoMbIaZV.dpuf

What is Ham Radio & How Does it Work?

Ham radio (so called because its operators were originally derided as being ‘hammy’ in the 19th century, when the technology first emerged) is a term that applies to any form of amateur radio broadcasting.

 

There are designated radio frequency spectra available solely for public use. Uses range from recreation to communication and the non-commercial exchange of ideas. ‘Hams’ take advantage of these frequencies in order to transmit any number of things Continue reading

Can anybody recommend a fantastic over-ear, wireless bluetooth, with-mic headset?

Think if you will, a pleasant trip to the shops on the hot summer’s day. This isn’t a tension packed, hunger-motivated excursion to your local supermarket followed with the bitter finding of the fact that bastards have set their prices up AGAIN…I said this was a pleasing trip. You head out into the warm, bright summer daylight searching for milk, some eggs and maybe just a little treat for yourself. You slide your iPod from the pouch and…and…Wait a moment, the wires all knotted up. Continue reading

Xbox One unboxing – headset included with all versions

Editorial – in 2013 will become a colossal year for that console industry. The modern generations of Xbox and Playstation, are expected to be released inside weeks of each other. Both are vying for our attention and hard-earned cash, unlike the past generation, Sony with the Playstation 4 have put a less expensive price together in contrast to the xbox one, which amazed everybody at E3 this year. But recent news announced by Microsoft proves that the xbox one contains kinect plus a headset, proving that xbox ones additional price is actually for additional extras. Continue reading