jbradenworld

[jbradenworld]

Radio Soul Communications

New Post has been published on http://www.soulcommunications.net/?p=361

Rifleman Radio is indispensable

When the army are on the battlefield, the equipment that they carry and the weight of it is paramount. Most two way radios are one of two things, light and easily breakable, with limited power, meaning limited range or heavy and the opposite to the above, Robust and able to transmit at a lengthy distance. The current development for a 2 channel that’s able to receive and transmit voice and data is an interesting concept. This article, that can originally be found here, give you more of the story.  

Nearly two years after the award of the Rifleman Radio contract, I made an appeal for new thinking by both the defense acquisition corps and the defense industry that now bears repeating.

Twenty-two months ago, the need for the Rifleman Radio was obvious as it is today. It provides infantry units with a relatively small and lower cost software-defined radio capable of transmitting voice and data, such as maps, images and texts. The technology that defines this “workhorse” tactical radio was continuing to mature, resulting in today’s Rifleman Radio being far more reliable and capable than the LRIP-ordered radios from even three years ago.

This maturation process was being driven by ongoing investments in radio technology made by the defense industry, including Thales and Harris Corporation, the two companies selected by the Army to build the Rifleman Radio.

At that time, I noted that success in the Defense Department’s new “Non-Developmental Items” or NDI strategy for the Army’s HMS program would require three things:

People. Bringing the right people together from three key groups for meaningful engagement: those defining the capabilities; those acquiring the capability for the government and industry; and those who have to deliver the capability to the Warfighter.

Dialogue. Creating ethical opportunities for face-to-face discussions with industry (not RFI dialogues) about the state of technology innovation and what is feasible to provide in a reasonable time and at a reasonable price.

Strategy. Building a shared understanding that this new NDI marketplace for tactical radios that requires industry to invest their own money to develop products will be one that delivers greater and greater capabilities over time, in other words, iteratively.

Where are we now? 

The Army is currently working to develop requirements for a 2-channel variant of the Rifleman Radio, a significant step in the Rifleman’s continuing evolution. The fundamental 2-channel communications capability — whether handheld or manpack variants — represents the future of tactical communications.

Two-channel capabilities for the small-unit leader radio like the Rifleman will meet the Army’s evolving tactical communications needs, with its ability to receive and transmit voice and data simultaneously, passing data to and from command to the unit.

The 2-channel Rifleman Radio will provide new capabilities without adding weight from extra radios and batteries. In short, it will provide the capability of two radios without burdening troops with lugging around two radios.

Viewed from a technical perspective, however, a 2-channel handheld radio represents an exponential leap in terms of complexity — it bears no relationship to the notion of “fusing two 1-channel radios together.”

Even the 2-channel HMS Manpack represents a tremendous technological leap forward, though it came with fewer space, size, power and weight limitations than the much smaller handheld Rifleman undoubtedly will. In short, the 2-channel Rifleman Radio will be a tall mountain to climb.

The future Rifleman 2-channel

The 2-channel Rifleman is an achievable reality, however, and speaking for Harris, we’re already well on the way to delivering this capability. The U.S. Special Operations Command (SOF) Tactical Communications (STC) 2-channel handheld radio being developed by Harris for special operations forces is leading the way to this future.

The STC radios are able to operate in the harshest environments and are specially designed to meet rigorous requirements. The STCs are small, lightweight, multiband and multifunction, with multi-mission capability to enable SOF teams to communicate over multiple channels simultaneously.

The Harris STC will provide the ability to receive ISR full-motion video and signals-based threat information. These handheld radios also will have built-in backward interoperability to communicate over legacy networks, and will be upgradable to integrate new capabilities as requirements evolve.

Although the Army’s requirements are still coming together, the 2-channel Rifleman most likely will trade fewer features for less cost. That said, there are many technical attributes related to the 2-channel capability that are likely to be applied from the Harris STC to the next iteration of the Rifleman.

The important takeaway here is that the Army’s continued commitment to evolving tactical communications has led industry to sustain its investment in advancing capabilities — and that formula has brought the 2-channel handheld much closer to reality.

Whether it is the STC or 2-channel Rifleman, the coming wave of new communication capabilities are the result of persistent innovations in myriad radio components: chip design, software, battery life, power consumption and antennas, to name a few.

As I pointed out in January 2015, the development of the Rifleman Radio would represent just the first iteration in the Army’s modernization of tactical radios ― a commitment that would deliver even more revolutionary capabilities over the next decade. But this will only happen if the Army maintains its end of the bargain by assuring industry that ongoing investments would be rewarded with purchases of the end products.

If BBP 1.0, 2.0 and 3.0 continue to be nurtured and “take root,” these radio technology capabilities will continue to evolve with each measured investment making possible continuing progress. Such an active NDI marketplace will ensure industry remains committed to R&D — and the beneficiary of this healthy dynamic is the warfighter.

[jbradenworld]

Motorola Tetra Airwave

New Post has been published on http://www.motorolaairwaveearpiece.co.uk/?p=336

Yankees Joe Girardi believes earpieces would help speed up pace of play

Here is the UK we commonly see coaches and physios on the football (soccer) bench wearing earpieces to communicate with each other, But this Baseball Coach wants to give the players an earpiece to improve player-to-coach communications. His argument is good, but will he be allowed?

Earlier in the week, Major League Baseball elected to remove the four-pitch sequence of the intentional walk from the game in order to speed up the pace of play. On Thursday, New York Yankees manager Joe Girardi threw his two cents into the ring regarding the current pace of play.

However, the veteran skipper did not comment on the recent rule change surrounding the intentional walk but rather the potential for hitters to wear an earpiece similar to that of NFL quarterbacks.

“As far as the pace of the game I am a big proponent of trying to introduce some type of communication through headphones like they do in the NFL, Girardi said on Wednesday at George M. Steinbrenner Field. “I think you can speed the game up that way.

In the NFL, quarterbacks are notorious for having a speaker inside their helmet while players on the defensive side of the football now have such technology in their helmets as well.

“You put earpieces in certain people,” he added. “Realistically you could put it in your hitters helmets and you could say what you wanted. Then its not a sign from me to the third base coach and a sign to the player. Instead of catchers always going out to change signs they could do it through communication. I think you could speed the game up a lot that way. The thing about signs is that signs take time and it slows it down.

However, many have argued that the removal of the four-pitch intentional walk was also parting ways with the potential for human error. Wouldnt the same be true for the lack of signs if Girardis earpiece system were implemented?

A player can very easily misinterpret a sign along the way, which could cause a difference in the game due to human error. Although many fans and people outside of the game would probably have less of an opinion regarding the managers new approach, it is nearly impossible to make everyone happy these days.

[jbradenworld]

Radio Soul Communications

New Post has been published on http://www.soulcommunications.net/?p=359

Here you find out what RF Communication is

Radio frequency (often abbreviated as, RF), can be described as any frequency within the electromagnetic spectrum with radio wave propagation that lie in the range extending from about 3 kHz to 300 GHz; this includes the frequencies that are used for communications or the radar signals. That said, you should know that RF generally refers to electrical rather than the mechanical oscillations.

RF communication utilizes radio waves rather than wires to exchange signals, and this is where the term “wireless communication,” comes from. RF modules generally use frequencies to distinguish the different radio signals, therefore, in order for the RF modules to communicate, they have to be operating on the same exact frequency. That said, you should know that radio frequency is normally measured in units known as hertz (abbreviated as Hz), which represent number of cycles/second when the radio wave(s) is transmitted. 1 hertz (Hz) equals 1 cycle/second, and 1 megahertz (abbreviated as, MHz) equals 1 million cycles/second.

A radio frequency (RF) signal basically refers to the wireless electromagnetic signal that’s utilized as a form of communication, when talking about wireless electronics. As mentioned earlier, radio waves are a type of electromagnetic radiation which have identified radio frequencies which usually range from about 3Hz to 300 GHz. Not every radio wave is the same; they can be small or big, or they can be far apart or close together. On the radio stations we normally listen to, every station uses waves which are on a slightly different frequency from the other stations. Whenever you happen to switch from one radio station to another, your radio picks up and then plays waves of that particular frequency.

Frequency normally refers to the oscillation rate of the radio waves. It can also refer to how close together or far apart the waves are. When the radio waves are too far apart, that is known as low frequency, and when the radio waves are close together, that is known as high frequency. That said, you should know that radio frequency propagation happens at speed of light, and doesn’t need any medium (such as air) in order for it to travel. Radio frequency waves occur naturally from lightning, the sun flares, and even from stars which radiate radio frequency waves as the get older. However, people usually communicate with man made radio waves which oscillate at various select frequencies.

The man made radio frequency waves are produced by oscillating current for a certain number of times, and radiating it off the conductor (which is referred to as the antenna), into an empty space (this is the space that’s occupied by air and not the outer space), as electromagnetic radio waves. The RF signals are received and sent using conductors via the phenomenon that’s called the skin effect, where radio frequency current latches itself and then flows through the conductors’ surface; this effect is actually the basis and the core of radio technology.

The best thing about RF communication, is that it’s omnipresent (that is to mean it’s all around us). It plays a crucial role in many of the communications systems which we depend on a daily basis, such as fire and police radio systems, TV and radio broadcasts, and satellite communications. Cordless phones, cellphones, Wireless internet (Wi Fi), and Bluetooth also operate in the radio frequency spectrum. In addition to that, there are other appliances outside of the communications field that use RF. They include; microwave ovens, garage door openers, among others. Some wireless devices such as TV remote controls, cordless computer mice, computer keyboards, and even 2 way radios also operate using RF frequency.

Two way radios are based on the RF frequency and they perform group communication using minimum radio frequency channel resources. This is to mean that if all the users are in the same location or area (most of the time), you will only need a single channel resource in order to talk to them. By using RF, 2 way radios have the capability of facilitating “one to many” group communication (which is also known as a group call), very efficiently. By efficient, I mean that 1 user can communicate/talk to 1, 5, 10, 100 or even 1000’s of users at a go. The two way radio user doesn’t need to keep on repeating the same message if he/she needs to convey to many users.

[jbradenworld]

Motorola Tetra Airwave

New Post has been published on http://www.motorolaairwaveearpiece.co.uk/?p=334

Communication: What You May Be Doing Wrong Without Even Realizing

Communication is the key to any business being successful, but communication comes in lots of different forms, understanding the right and proper way of communicating will see you through in your career very well. This article is a very good overview of what communication can mean to you.

As a professional, you certainly know the importance of effective communication. Being an effective communicator is not only about the message, it’s also about the mode of communication and the opportunities you provide for feedback.

Your inability to get the point across thwarts your efforts at effective communication. You can’t just send out a company-wide email and assume everything is copacetic if no one replies. The truth may be that you were ineffective as a communicator, and people didn’t understand—or even pay attention—to your message.

There are some things you might be doing to undermine your effectiveness as a communicator, and you may not even know you’re doing them. Here are some communication pitfalls you should try to avoid:

Over-Communicating

You’re not an effective communicator if you just repeat the same message over and over. If you want to remind your employees about an important deadline, sending out a single reminder would be appropriate. Sending out multiple reminders, however, is overkill—and possibly even an insult to your employees’ ability to remember information. Redundancy in your messages is not only unnecessary, but it’s also counterproductive and a waste of time—for you and your employees. Whenever you send out communication on an ongoing subject, make sure it offers added information and is not merely a reiteration of the material you already shared.

Relying Too Much on One Channel (Or the Wrong Channel)

Today’s technology makes it possible to communicate in many different ways. While it’s easy to do, you shouldn’t get stuck in one particular communication mode. There are so many digital communication channels that work really well these days. Email is a popular tactic and can work well, but people are inundated with email today and often suffer from “in-box overload.” So, you may want to consider using a combination of tactics for impactful news, such as the announcement of a merger or a high-level addition to the company management.

Consider a web-based meeting when you really want to make an impact. According to “The Evolution of Work—The Changing Nature of the Global Workplace,” a study by ADP Research Institute®, nearly 80 percent of employees regard technology positively for allowing deeper connections across distance and time. It just makes sense to consider other forms of digital communication, such as mobile apps or an internal company website.

Being Indirect

Nobody likes to be the bearer of bad news, but it doesn’t help the situation to be vague or unclear. You should try to deliver important news in person—and the more complicated or easily misunderstood the message is likely to be, the more it makes sense for you to sit down across from the person—or team—to convey the message. A direct, in-person approach adds an important component to your communication: The ability to observe others’ facial expressions and body language, which allows you to ensure your message has been understood.

Ignoring Nonverbal Cues

If you listen only to a person words and ignore their nonverbal cues your direct communication may not be successful. Research conducted by Dr. Albert Mehrabian indicates that 55 percent of our intent is delivered through nonverbal elements, such as facial expressions, gestures, and postures. If employees seem to express agreement with a new policy, non verbal cues such as hunched shoulders, crossed arms, and lack of eye contact may indicate that you still have some work to do in order to get buy-in from your team.

Not Being Open

Secrecy in the workplace often erodes trust in leadership and foments gossip. By being more transparent in your communication, you foster a sense of belonging and trust. Knowledge replaces speculation, and can help reduce gossip and rumors.

Not Listening

Remember—communication is a two-way street. Soliciting feedback is one of the greatest ways for you to know what employees are truly thinking. If you want to improve your communication skills, heed this advice: Speak less, listen more. After you’ve had the opportunity to listen, you can fine-tune your communication skills to be more effective than before.

[jbradenworld]

Two way communication devices

New Post has been published on http://www.twowaycommunication.co.uk/?p=409

The arrival of 5G, cognitive radio and the future of connectivity

We are very excited about 5G, we have already reported on how the UK emergency services are moving over to a LTE network, and inevitably 5G is the next step for better, faster and more capable communications.  Not planned to be deployed until the next decade, we believe that 5G will allow us to communicate better with our Walkie talkies. The original article can be found here.

With faster and more reliable connections, we look at what the next generation of communications could mean for business

From smart cities to the internet of things (IoT), virtually every aspect of the modern world is becoming closely connected.

The extent to which we rely on our devices and the exchange of information means new systems are needed that not only handle far greater bandwidth, but that are capable of being deployed to cover areas that were previously unreachable.

The potential benefits for business are huge, with faster and more reliable connectivity not only enhancing how firms interact with customers and each other, but also lending itself to greater flexible working among staff.

The arrival of 5G

One development that many industry observers believe could be revolutionary is 5G. Following on from 4G, the fifth-generation mobile network is in its early stages of development and is expected to be rolled out between 2020–25.

Any tech that contributes towards the next phase of mobile connectivity is covered by the term 5G. And although there are still no set standards or specifications, the GSMA – a trade body that represents global mobile operators – has outlined eight key criteria, stipulating minimum requirements for speed, capacity and energy in order for something to be considered 5G.

According to Ofcom, once operational 5G could provide between 10–50 Gbps (gigabit per seconds) in download speeds (as compared to the 5–12 Gbps of 4G), and although most experts expect it to be at the lower end of the range, that would still mean you could download an HD movie in seconds.

But rather than simply being faster than the current 4G, it will also allow more devices to access the web – an essential requirement if the IoT is to take off – meaning it could be transformative for business.

Raj Sivalingam, executive director of telecoms for techUK, the trade association for the tech sector, says: “The potential of the IoT, particularly in the enterprise environment, has been hugely debated but its impact is almost certainly still undervalued.

“Mass deployment across sectors will boost efficiency and safety with pre-emptive fault correction; enable automatic reporting of accidents and allow real-time asset tracking, reducing crime and increasing productivity, to name just a few benefits.”

One potential bottleneck for 5G is spectrum availability – or lack of it. Radio frequencies for both 3G and 4G are already overcrowded. The provision of a new bandwidth will require widespread cooperation between operators, manufacturers and governments.

Infrastructure is also an issue, says Sivalingam. “Making the leap to 5G mobile services and getting more fibre into the fixed telecommunications networks will require substantial amounts of investment.

“We need the government and industry stakeholders to work to shift the UK from good levels of connectivity to great levels so that we continue to attract investors and startups, and to foster innovation from within the UK.”

Cognitive radio

One possible solution is cognitive radio. An adaptive radio and network technology, it can sense and respond to its operating environment and automatically tune itself to the best available frequencies, this makes it more reliable in extreme locations where signals are weak, potentially providing dependable, robust connections that are not hampered by interference or geography.

Finland-based KNL Networks has developed a system using the technology that uses short wave radio to transmit internet access to sites in remote locations ranging from oil rigs to polar research stations. KNL Networks CEO Toni Linden says: “We can provide similar connectivity to those from satellites but with a terrestrial radio system. Our radios receive the whole spectrum all the time, so rather than scanning, real-time broadband receiving is going on. Thus we can see and measure everything that’s going on in the spectrum and we can maintain the network connectivity that way.”

The tech opens up the possibility of providing seamless connectivity anywhere, giving business reliable online access to markets in parts of the world that have otherwise been unreachable. It could also enable media and other companies to broadcast without the need for expensive satellites.

Quantum key distribution

It’s not just data transmission, speeds and connectivity that pose challenges in the future, but the safety of that data too. Cybercrime is ranked alongside terrorism as among the most serious threats to the UK [pdf], and with data now the lifeblood of modern business, securing that data is of paramount concern. One technology that could provide the answer is quantum communications.

Conventional encryption relies on sending a decryption key alongside your secret data. The receiver then uses that key to decode your secret information. But problems arise because hackers can also copy this key and steal your data.

Quantum key distribution (QKD) is different because it encodes this key on light particles called photons, and an underlying principle of quantum mechanics means that a hacker trying to read or copy such a key would automatically alter its state, effectively leaving a hacker fingerprint so the sender and receiver know their information security had been breached.

China recently launched a quantum satellite to further research into this technology, with the hope of developing an uncrackable communications network.

In the UK, the Quantum Communications Hub is part of a national network of four hubs led by the universities of Birmingham, Glasgow, Oxford and York. Director Tim Spiller says: “We are developing quantum communications technologies along a number of different directions, notably short-range free space QKD, where the transmitter could be in future mobile phones, and chip-to-chip QKD through optical fibre, where the chips could be in future computers and other devices.”

With two thirds of British business falling victim to cybercrime in the past year the need for better encryption is clear.

Several companies currently offer commercial quantum key distribution systems include ID Quantique, MagiQ Technologies, QuintessenceLabs, SeQureNet and Toshiba, although its high cost and limited range means mainly banks and governments are its main users, with mainstream adoption still some way off.

Spiller added: “Certainly it would be desirable to improve the size, weight, power and cost points of current technologies and our work in the hub and elsewhere is addressing all these factors.”

Paul Lee, head of technology, media, and telecommunications research at Deloitte, highlighted a number of improvements which he expected to see coming down the line, including improved mobile antennae and base stations, as well as improvements to fixed networks such as G.fast that would enable copper cable to operate at much higher speeds.

“As they get steadily faster, new services emerge to exploit these greater speeds, which then requires the deployment of even faster networks. This tail chasing has been going on for decades and won’t stop in 2017.”

[jbradenworld]

palm communications

New Post has been published on http://www.palm-communications.com/?p=378

2016 year in review: Motorola's resurgence

Motorola have always been a brand we have looked up to, in our eyes they produce some of the best equipment on the market, sometimes they don’t sell as well as they should do. The business has been split and sold several times over the last year, but they are now on the rise and business is going well, as this article shows.

2014 saw Motorola’s ownership change hands from the west to the east. Lenovo acquired the company off Google on January 29, 2014 but it was not until 2016 that the fruits of Lenovo’s ownership started showing up.

The year started off with Motorola in a slightly vulnerable position with the relative failure of both the Moto X Style and Moto X Play. The Moto X line was fading and even the third generation Moto G had failed to impress.

These first devices under Lenovo’s ownership however, had been in the pipeline much before Lenovo took over and it was not until the Moto G4 and the Moto Z in 2016 that we saw what the new Motorola could deliver.

Moto G4 series: Ushering in a renaissance

The Moto G4 Plus was one of two variants of Motorola’s fourth generation Moto G, the firm’s bestselling smartphone range ever. This was the first time Motorola (now owned by Lenovo) launched more than one smartphone in the G range, with the Moto G4, Moto G4 Play and the Moto G4 Plus.

At a starting price of Rs 13,499, the Moto G4 Plus made for a compelling buy, and continued the G series of smartphone’s tradition of providing good smartphones at an affordable price. With a superb display, a fast and accurate fingerprint sensor, stock android and great performance, it ticked all the right boxes for a mid-range device.

In comparison to the regular Moto G4, the Moto G4 Plus featured an improved 16MP rear camera with phase auto detection, laser autofocus and a dual LED Flash and also came with a fingerprint sensor.

Motorola also released the Moto G4 Play which was the cheapest device in the G4 lineup at Rs 8,999 and packed a 5-inch 720p HD display, a 2,800mAh battery, 2GB of RAM and 16GB of expandable internal storage.

The Moto G4, G4 Plus and G4 Play were critical as well as commercial hits and announced the comeback of Motorola in the smartphone game. The Plus in particular, presented a fantastic blend of features and affordability that saw it shoot up the sales charts.

Moto E3 Power: The odd one out

Lenovo also unveiled the Moto E3 Power in India which was a more powerful version of the third generation Moto E3. In a surprising move, the company decided against releasing the regular Moto E3 in the country.

The Moto E3 Power came with a massive 3,500mAh battery, 2GB of RAM, a 5-inch HD display and nearly stock Android Marshmallow.

At Rs 7,999, the Moto E3 Power found itself in as odd situation with the much more capable Moto G4 Play priced at just a thousand rupees more.

The attack of the Modular smartphones

Motorola then cemented its position in the smartphone world by releasing the striking Moto Z, the company’s most exciting smartphone in years.

The Moto Z came packed to the gills with a Qualcomm Snapdragon 820 SoC, 4GB of RAM, a 13MP rear camera with OIS and 4K recording, a 5MP front shooter and a 2,600mAh battery along with TurboCharging support.

The ‘World’s thinnest premium smartphone’ came with a 5.5-inch QuadHD display protected by corning gorilla glass, a sleek and suave metal/glass body and unlimited feature expansion through the Moto Mods.

The distinguishing feature of the Moto Z were the ‘Moto Mods’: snap-on accessories that could be attached to the back of smartphone through magnets in order to increase its functionality.

Alongside the flagship Moto Z, Motorola also launched its younger brother, the Moto Z Play which came with a 5.5-inch 1080p Super AMOLED display, a downgrade from the QuadHD resolution of the Moto Z and the largest battery Motorola ever put in any of its smartphones. Just like the Moto Z, the Moto Z Play also supported the innovative Moto Mods.

The Moto Z and Moto Z Play helped bring Motorola back into the spotlight. The Moto Mods in particular were greatly appreciated and were hailed as one of the best implementations of the modular concept in recent years.

The stunning all-metal Moto M

The end of the year saw Motorola launching the stunning all-metal Moto M in India.

The Moto M’s full metal unibody design with antenna bands on the top and bottom edges was a complete departure from the design language of previous Motorola smartphones and was again an indication of the company’s new ownership.

This is what Sudhin Mathur, Executive Director, Lenovo Mobile Business Group, India had to say about the company’s performance in 2016:

“The Moto G franchise continues to be much loved and we witnessed an extremely high conversion from early Moto G buyers opting for the new Moto G 4th Generation. But, our real game changer and technological breakthrough was the Moto Z and Moto Mods series that redefined the evolutionary progress of the smartphone industry. The Moto Z and Moto Mods system is designed to provide connected, intelligent and mobile consumer experiences in a seamless fashion and the power to transform your (Moto Z) smartphone in a snap is revolutionary. We started with four Moto Mods and are continuously working with multiple partners to develop more Mods for smartphone users in 2017.”

What’s next?

2017 will be a crucial year for the company as it prepares to build upon the success of the G4 and Z range. It is pivotal for Lenovo to make sure that it retains the essence of the company while at the same time push new boundaries of design and innovation.

[jbradenworld]

Bluetooth Earphone

New Post has been published on http://www.bluetoothearphone.co.uk/?p=314

3 Types Of Security Earpieces With Mics

If you are looking for a security earpiece with a mic , then you will need to know the varieties available out there. While some types are more expensive than others, what ultimately matters is the quality and durability of what you get at the end. Below is a look at what you get out there:

One wire kit

With this one, there is only a single wire, which emerges from the radio, runs through the PTT and then ends where the earpiece starts. This makes for a simple yet effective look. As for the length of the cable, the one wire kit has a piece that runs between 28 and 34 inches. This means that you have at your disposal a length sufficient to cover the distance between your ears and the waist without any kind of stretching or straining. Of course, the reach of every security earpiece will be determined by the height of the person wearing it. The one wire kit is great for an average height and will work for anyone 6 feet and below.

Most one wire kits come in the original D and G shapes. There are some fancier designs out there as well if that’s what you are looking for.

Two wire kits

As the name suggests, there are two wires involved in this scenario. One runs to the Push to Talk (PTT) button. The other runs up to the earpiece, making for a good looking dual connection. For the purposes of discretion, you are allowed to wear this cable partially disguised within your clothing. One wire will emerge from the radio, rising up your back to the ear in a way that keeps you comfortable. The other cable runs from the radio, up the length of your hands and terminates at the cuffs if you are wearing a long-sleeved shirt or sweater. In terms of length, the two-wire kit is essentially the same as its one wire counterpart, with a reach of 30 to 34 inches. This accounts strictly for the length of each individual wire, and allows the unit to comfortably cover the areas between your waist and the ears. Two wire kits commonly come in the form of an acoustic tube that many who know a little about surveillance will be able to understand.

3 Wire kits

Here, you have three wires coming off the radio. The first wire will terminate where the earpiece is built. The second will end where the Push to Talk button is located. The last will end at a connection with the mic. As with the two wire kits, this one is worn under ordinary clothing, with a cable for the mic, earpiece and PTT button. There is really no standard length for all the three wires and there is no guarantee that all of them will be equal in length, but there is a sense of flexibility in the way you get to use the piece. Always try on sample pieces before making a purchase at a store. Over the internet purchases are trickier but then the measurements will be highlighted long before you order.

Understanding the functionality of PTT technology

Push to Talk is a cutting-edge technology that allows for direct communication between parties at agreed-upon frequencies and distances. The greatest thing about PTT is that it switches communications from duplex to half duplex. This means people do not talk over each other but get to alternate between speaking and listening. PTT is able to loop in two or more speakers at an instance of communication, allowing for conference-like types of engagements between participants. This streamlines communication. Most enterprises prefer this approach to communication because there are no limitations in terms of allotted minutes. As such, there is absolutely no need to stay within the confines of a data plan, which would be both expensive, inconvenient and rigid.

There is no such thing as a right security earpiece. What works for you may not work for all other parties across the board. While your budget matters a lot, you are looking for something that works optimally and stands the test of time. The three types mentioned above are alright if you are looking for something that works all the time. Remember, prices will vary across brands and models.

[jbradenworld]

Radio Soul Communications

New Post has been published on http://www.soulcommunications.net/?p=357

£4 billion emergency radio system ‘not yet proven’

We have been very vocal against the new ESN network, Tetra is proven and works very well, the benefits to moving over to a 4G network are attractive, but will it stand-up to a major incident? Will the network be robust enough when there are thousands of communications in a located area? These concerns have now been picked up by a commons committee, read more below….

An inquiry has revealed deep concerns about the coverage and contracting of a new £4 billion national emergency radio system.

A Commons’ Public Accounts Committee report released this month criticised the Home Office for its handling of the proposed the Emergency Services Network, or ESN.

Plans to deploy the “not yet proven” emergency radio system by December 2019 “would not be met”, the committee said. The committee also criticised the Home Office for mishandling contracts talks for ESN and failing to plan for delays, that could cost nearly £500 million alone.

“Good communications can make the difference between life and death for both emergency services personnel and the public but the technology ESN will rely on is not yet proven.”

Across the UK, 105 ambulance, fire and police services are expected to switch from their existing Airwave Solutions radio system to ESN by December 2019.

Unlike the ageing Airwave network, ESN will operate on an existing retail 4G network rather than a dedicated emergency radio network.

However, the committee said forcing emergency services to share a network with the public had not been attempted at scale.

The approach relied on much improved network coverage across the UK, including on the London Underground, and new technology to prioritise emergency services over other network users.

“Bringing together all the different elements to form an end-to-end system and scaling up these solutions and testing them adequately will be very challenging.”

The government is expected to spend £1.2 billion developing ESN, £1.4 billion running down Airwave, and further £2.6 billion operating ESN until 2032.

The contract with Airwaves, which was bought by Motorola last year, expires in December 2019. The committee said extending this contract, which will almost certainly be necessary given expected delays, will cost an additional £475 million a year.

In 2015, Motorola and EE won the user services and networks contracts respectively for ESN.

The committee also criticised the Home Office for not maintaining “competitive pressure” while awarding the contracts and leaving the winning bidders in a “very strong position” when the contract comes up for renewal in 2023.

The committee recommended the Home Officer test the new network coverage rigorously, improve its tendering, budget and plan for an Airwave contract extension and reassess its timeline for switching to the new system.

“It must take responsibility for convincing services to switch to ESN but also be clear at what point it will mandate the switchover.”

The Home Office was told to report back to the committee by September this year.

[jbradenworld]

Bluetooth Earphone

New Post has been published on http://www.bluetoothearphone.co.uk/?p=312

Have you ever thought What’s Radio Frequency Communication

Radio frequency (often abbreviated as, RF), can be described as any frequency within the electromagnetic spectrum with radio wave propagation that lie in the range extending from about 3 kHz to 300 GHz; this includes the frequencies that are used for communications or the radar signals. That said, you should know that RF generally refers to electrical rather than the mechanical oscillations.

RF communication utilizes radio waves rather than wires to exchange signals, and this is where the term “wireless communication,” comes from. RF modules generally use frequencies to distinguish the different radio signals, therefore, in order for the RF modules to communicate, they have to be operating on the same exact frequency. That said, you should know that radio frequency is normally measured in units known as hertz (abbreviated as Hz), which represent number of cycles/second when the radio wave(s) is transmitted. 1 hertz (Hz) equals 1 cycle/second, and 1 megahertz (abbreviated as, MHz) equals 1 million cycles/second.

A radio frequency (RF) signal basically refers to the wireless electromagnetic signal that’s utilized as a form of communication, when talking about wireless electronics. As mentioned earlier, radio waves are a type of electromagnetic radiation which have identified radio frequencies which usually range from about 3Hz to 300 GHz. Not every radio wave is the same; they can be small or big, or they can be far apart or close together. On the radio stations we normally listen to, every station uses waves which are on a slightly different frequency from the other stations. Whenever you happen to switch from one radio station to another, your radio picks up and then plays waves of that particular frequency.

Frequency normally refers to the oscillation rate of the radio waves. It can also refer to how close together or far apart the waves are. When the radio waves are too far apart, that is known as low frequency, and when the radio waves are close together, that is known as high frequency. That said, you should know that radio frequency propagation happens at speed of light, and doesn’t need any medium (such as air) in order for it to travel. Radio frequency waves occur naturally from lightning, the sun flares, and even from stars which radiate radio frequency waves as the get older. However, people usually communicate with man made radio waves which oscillate at various select frequencies.

The man made radio frequency waves are produced by oscillating current for a certain number of times, and radiating it off the conductor (which is referred to as the antenna), into an empty space (this is the space that’s occupied by air and not the outer space), as electromagnetic radio waves. The RF signals are received and sent using conductors via the phenomenon that’s called the skin effect, where radio frequency current latches itself and then flows through the conductors’ surface; this effect is actually the basis and the core of radio technology.

The best thing about RF communication, is that it’s omnipresent (that is to mean it’s all around us). It plays a crucial role in many of the communications systems which we depend on a daily basis, such as fire and police radio systems, TV and radio broadcasts, and satellite communications. Cordless phones, cellphones, Wireless internet (Wi Fi), and Bluetooth also operate in the radio frequency spectrum. In addition to that, there are other appliances outside of the communications field that use RF. They include; microwave ovens, garage door openers, among others. Some wireless devices such as TV remote controls, cordless computer mice, computer keyboards, and even two way radios also operate using RF frequency.

2 way radios are based on the RF frequency and they perform group communication using minimum radio frequency channel resources. This is to mean that if all the users are in the same location or area (most of the time), you will only need a single channel resource in order to talk to them. By using RF, 2 way radios have the capability of facilitating “one to many” group communication (which is also known as a group call), very efficiently. By efficient, I mean that 1 user can communicate/talk to 1, 5, 10, 100 or even 1000’s of users at a go. The two way radio user doesn’t need to keep on repeating the same message if he/she needs to convey to many users.

[jbradenworld]

Bluetooth Earphone

New Post has been published on http://www.bluetoothearphone.co.uk/?p=310

Motorola Solutions’ digital two-way radio technology enhances mission-critical communications at Munich airport

Motorola solutions are a company well known for their robust two way radios and for building world class communication structures. Improving on the current TETRA system with an IP dispatch console and piloting the WAVE system, that allows a phone app to connect to the radio system, for communicating of site. You can read more about what Motorola are doing for Munich below and you can find the original article here.

Motorola Solutions has received an order to implement a comprehensive update and extension of its existing TETRA digital two-way radio system at Munich Airport.

The newly modernized communications infrastructure ensures greater connectivity, interoperability and collaboration between various business and operational functions at Germany’s second largest airport. Motorola Solutions will also provide services for ensuring smooth operations.

Within the framework of the TETRA radio network refresh, Motorola Solutions is equipping the airport with a new MCC 7500 IP Dispatch Console. The comprehensive, scalable solution enhances the IP architecture to ensure optimum call set up and availability. It will also allow Munich Airport to expand its communications infrastructure in the future without interrupting existing services. As well as this, Motorola Solutions will implement two TETRA base stations for improved TETRA radio coverage in the terminal buildings.

Alongside the improvements to the TETRA system, the airport has started a pilot project for the potential introduction of Motorola Solutions’ broadband push-to-talk (PTT) platform WAVE. The goal of the installation is to ensure that airport staff can communicate, no matter which device or infrastructure is being used. The powerful PTT solution WAVE™ Work Group Communications provides airport authorities with secure and reliable communications beyond TETRA radio – including broadband devices and networks – to enable greater workforce connectivity, interoperability and collaboration. WAVE connects the TETRA system used by administrative staff with service management employees who join the broadband platform via smartphones, computers, other radios or telephones, meaning that staff across the airport can communicate with one another from virtually any location.

“We have been working with Motorola Solutions’ TETRA two-way digital radio system since 2007,” said Michael Zaddach, head of the IT service division at Flughafen München GmbH. “The update of our TETRA infrastructure enables us to further improve our communications in airport operations and make our processes even more efficient.”

“We are collaborating closely with Munich Airport to provide a future-proof TETRA digital two-way radio network,” said Klaus-Dieter Drossel, sales director for key accounts, Motorola Solutions Germany GmbH. “We are also pleased that Munich Airport is testing our broadband push-to-talk platform WAVE, and we are certain that it will enable airport staff to work together more closely, no matter which device or network they use.”

[jbradenworld]

Motorola Tetra Airwave

New Post has been published on http://www.motorolaairwaveearpiece.co.uk/?p=332

What Are The Types Security Earpieces You Can Get: We Have Three For You To Look At

If you are looking for a security earpiece with a mic, then you will need to know the varieties available out there. While some types are more expensive than others, what ultimately matters is the quality and durability of what you get at the end. Below is a look at what you get out there:

One wire kit

With this one, there is only a single wire, which emerges from the radio, runs through the PTT and then ends where the earpiece starts. This makes for a simple yet effective look. As for the length of the cable, the one wire kit has a piece that runs between 28 and 34 inches. This means that you have at your disposal a length sufficient to cover the distance between your ears and the waist without any kind of stretching or straining. Of course, the reach of every security earpiece will be determined by the height of the person wearing it. The one wire kit is great for an average height and will work for anyone 6 feet and below.

Most one wire kits come in the original D and G shapes. There are some fancier designs out there as well if that’s what you are looking for.

Two wire kits

As the name suggests, there are two wires involved in this scenario. One runs to the Push to Talk (PTT) button. The other runs up to the earpiece, making for a good looking dual connection. For the purposes of discretion, you are allowed to wear this cable partially disguised within your clothing. One wire will emerge from the radio, rising up your back to the ear in a way that keeps you comfortable. The other cable runs from the radio, up the length of your hands and terminates at the cuffs if you are wearing a long-sleeved shirt or sweater. In terms of length, the two-wire kit is essentially the same as its one wire counterpart, with a reach of 30 to 34 inches. This accounts strictly for the length of each individual wire, and allows the unit to comfortably cover the areas between your waist and the ears. Two wire kits commonly come in the form of an acoustic tube that many who know a little about surveillance will be able to understand.

3 Wire kits

Here, you have three wires coming off the radio. The first wire will terminate where the earpiece is built. The second will end where the Push to Talk button is located. The last will end at a connection with the mic. As with the two wire kits, this one is worn under ordinary clothing, with a cable for the mic, earpiece and PTT button. There is really no standard length for all the three wires and there is no guarantee that all of them will be equal in length, but there is a sense of flexibility in the way you get to use the piece. Always try on sample pieces before making a purchase at a store. Over the internet purchases are trickier but then the measurements will be highlighted long before you order.

Understanding the functionality of PTT technology

Push to Talk is a cutting-edge technology that allows for direct communication between parties at agreed-upon frequencies and distances. The greatest thing about PTT is that it switches communications from duplex to half duplex. This means people do not talk over each other but get to alternate between speaking and listening. PTT is able to loop in two or more speakers at an instance of communication, allowing for conference-like types of engagements between participants. This streamlines communication. Most enterprises prefer this approach to communication because there are no limitations in terms of allotted minutes. As such, there is absolutely no need to stay within the confines of a data plan, which would be both expensive, inconvenient and rigid.

There is no such thing as a right security earpiece. What works for you may not work for all other parties across the board. While your budget matters a lot, you are looking for something that works optimally and stands the test of time. The three types mentioned above are alright if you are looking for something that works all the time. Remember, prices will vary across brands and models.

[jbradenworld]

Bicol Radio Blog

New Post has been published on http://www.bicolradio.org/?p=199

Have you ever thought What exactly is Radio Frequency Communication

Radio frequency (often abbreviated as, RF), can be described as any frequency within the electromagnetic spectrum with radio wave propagation that lie in the range extending from about 3 kHz to 300 GHz; this includes the frequencies that are used for communications or the radar signals. That...

[jbradenworld]

palm communications

New Post has been published on http://www.palm-communications.com/?p=376

£4 billion emergency radio system ‘not yet proven’

We have been very vocal against the new ESN network, Tetra is proven and works very well, the benefits to moving over to a 4G network are attractive, but will it stand-up to a major incident? Will the network be robust enough when there are thousands of communications in a located area? These concerns have now been picked up by a commons committee, read more below….

An inquiry has revealed deep concerns about the coverage and contracting of a new £4 billion national emergency radio system.

A Commons’ Public Accounts Committee report released this month criticised the Home Office for its handling of the proposed the Emergency Services Network, or ESN.

Plans to deploy the “not yet proven” emergency radio system by December 2019 “would not be met”, the committee said. The committee also criticised the Home Office for mishandling contracts talks for ESN and failing to plan for delays, that could cost nearly £500 million alone.

“Good communications can make the difference between life and death for both emergency services personnel and the public but the technology ESN will rely on is not yet proven.”

Across the UK, 105 ambulance, fire and police services are expected to switch from their existing Airwave Solutions radio system to ESN by December 2019.

Unlike the ageing Airwave network, ESN will operate on an existing retail 4G network rather than a dedicated emergency radio network.

However, the committee said forcing emergency services to share a network with the public had not been attempted at scale.

The approach relied on much improved network coverage across the UK, including on the London Underground, and new technology to prioritise emergency services over other network users.

“Bringing together all the different elements to form an end-to-end system and scaling up these solutions and testing them adequately will be very challenging.”

The government is expected to spend £1.2 billion developing ESN, £1.4 billion running down Airwave, and further £2.6 billion operating ESN until 2032.

The contract with Airwaves, which was bought by Motorola last year, expires in December 2019. The committee said extending this contract, which will almost certainly be necessary given expected delays, will cost an additional £475 million a year.

In 2015, Motorola and EE won the user services and networks contracts respectively for ESN.

The committee also criticised the Home Office for not maintaining “competitive pressure” while awarding the contracts and leaving the winning bidders in a “very strong position” when the contract comes up for renewal in 2023.

The committee recommended the Home Officer test the new network coverage rigorously, improve its tendering, budget and plan for an Airwave contract extension and reassess its timeline for switching to the new system.

“It must take responsibility for convincing services to switch to ESN but also be clear at what point it will mandate the switchover.”

The Home Office was told to report back to the committee by September this year.

[jbradenworld]

Walkies Talkies

New Post has been published on http://www.walkiestalkies.co.uk/?p=280

Rifleman Radio is indispensable

When the army are on the battlefield, the equipment that they carry and the weight of it is paramount. Most two way radios are one of two things, light and easily breakable, with limited power, meaning limited range or heavy and the opposite to the above, Robust and able to transmit at a lengthy distance. The current development for a 2 channel that’s able to receive and transmit voice and data is an interesting concept. This article, that can originally be found here, give you more of the story.  

Nearly two years after the award of the Rifleman Radio contract, I made an appeal for new thinking by both the defense acquisition corps and the defense industry that now bears repeating.

Twenty-two months ago, the need for the Rifleman Radio was obvious as it is today. It provides infantry units with a relatively small and lower cost software-defined radio capable of transmitting voice and data, such as maps, images and texts. The technology that defines this “workhorse” tactical radio was continuing to mature, resulting in today’s Rifleman Radio being far more reliable and capable than the LRIP-ordered radios from even three years ago.

This maturation process was being driven by ongoing investments in radio technology made by the defense industry, including Thales and Harris Corporation, the two companies selected by the Army to build the Rifleman Radio.

At that time, I noted that success in the Defense Department’s new “Non-Developmental Items” or NDI strategy for the Army’s HMS program would require three things:

People. Bringing the right people together from three key groups for meaningful engagement: those defining the capabilities; those acquiring the capability for the government and industry; and those who have to deliver the capability to the Warfighter.

Dialogue. Creating ethical opportunities for face-to-face discussions with industry (not RFI dialogues) about the state of technology innovation and what is feasible to provide in a reasonable time and at a reasonable price.

Strategy. Building a shared understanding that this new NDI marketplace for tactical radios that requires industry to invest their own money to develop products will be one that delivers greater and greater capabilities over time, in other words, iteratively.

Where are we now? 

The Army is currently working to develop requirements for a 2-channel variant of the Rifleman Radio, a significant step in the Rifleman’s continuing evolution. The fundamental 2-channel communications capability — whether handheld or manpack variants — represents the future of tactical communications.

Two-channel capabilities for the small-unit leader radio like the Rifleman will meet the Army’s evolving tactical communications needs, with its ability to receive and transmit voice and data simultaneously, passing data to and from command to the unit.

The 2-channel Rifleman Radio will provide new capabilities without adding weight from extra radios and batteries. In short, it will provide the capability of two radios without burdening troops with lugging around two radios.

Viewed from a technical perspective, however, a 2-channel handheld radio represents an exponential leap in terms of complexity — it bears no relationship to the notion of “fusing two 1-channel radios together.”

Even the 2-channel HMS Manpack represents a tremendous technological leap forward, though it came with fewer space, size, power and weight limitations than the much smaller handheld Rifleman undoubtedly will. In short, the 2-channel Rifleman Radio will be a tall mountain to climb.

The future Rifleman 2-channel

The 2-channel Rifleman is an achievable reality, however, and speaking for Harris, we’re already well on the way to delivering this capability. The U.S. Special Operations Command (SOF) Tactical Communications (STC) 2-channel handheld radio being developed by Harris for special operations forces is leading the way to this future.

The STC radios are able to operate in the harshest environments and are specially designed to meet rigorous requirements. The STCs are small, lightweight, multiband and multifunction, with multi-mission capability to enable SOF teams to communicate over multiple channels simultaneously.

The Harris STC will provide the ability to receive ISR full-motion video and signals-based threat information. These handheld radios also will have built-in backward interoperability to communicate over legacy networks, and will be upgradable to integrate new capabilities as requirements evolve.

Although the Army’s requirements are still coming together, the 2-channel Rifleman most likely will trade fewer features for less cost. That said, there are many technical attributes related to the 2-channel capability that are likely to be applied from the Harris STC to the next iteration of the Rifleman.

The important takeaway here is that the Army’s continued commitment to evolving tactical communications has led industry to sustain its investment in advancing capabilities — and that formula has brought the 2-channel handheld much closer to reality.

Whether it is the STC or 2-channel Rifleman, the coming wave of new communication capabilities are the result of persistent innovations in myriad radio components: chip design, software, battery life, power consumption and antennas, to name a few.

As I pointed out in January 2015, the development of the Rifleman Radio would represent just the first iteration in the Army’s modernization of tactical radios ― a commitment that would deliver even more revolutionary capabilities over the next decade. But this will only happen if the Army maintains its end of the bargain by assuring industry that ongoing investments would be rewarded with purchases of the end products.

If BBP 1.0, 2.0 and 3.0 continue to be nurtured and “take root,” these radio technology capabilities will continue to evolve with each measured investment making possible continuing progress. Such an active NDI marketplace will ensure industry remains committed to R&D — and the beneficiary of this healthy dynamic is the warfighter.

[jbradenworld]

palm communications

New Post has been published on http://www.palm-communications.com/?p=373

How To To Select A Walkie Talkie Headset For Your Bike

Motorcycle helmet intercoms have recently gained lots of popularity for the safety and convenience they offer. They have lots of enhanced features which help riders focus on driving. That being so, you should know that being able to choose and use the right type of motorcycle helmet intercom is extremely important as it makes it easy for riders to perform all kinds of actions and do all kinds of things without any fear of losing control of their motorcycle. In this article, we’re going to be talking about the best features to look for in a motorcycle helmet intercom, and the different types of motorcycle intercoms available in the market;

Here are the features to look for when looking for a walkie talkie headset for your motorcycle helmet:

Well, riding in a motorcycle usually makes the rider quite vulnerable to various kinds of road and environmental factors. This includes dirt, dust, rain, humidity, and all types of things which one can possibly encounter. Because of this, you should consider getting a completely weatherproof motorcycle helmet intercom. Fortunately, most of the motorcycle intercoms in the market today are weatherproof, water resistant or waterproof. For the best protection from the elements, consider choosing a weatherproof or waterproof intercom, instead of the water resistant ones; this ensures that despite any hazards and rain, your system will be safe, and still work efficiently.

You should also consider getting a system that has a headset speaker for both ears or one ear. This particular factor depends on personal preference as some may find it more convenient to use a one ear headset, while others may prefer both years as some riders like hearing sound in both of their ears. That being so, you should know that installation and moving of the intercom to a different helmet is much easier for the systems which have only one ear.

Another important factor to consider is voice activation. Many systems have the voice activation feature which keeps the headset(s) quiet when no one is talking. The voice activation feature also has the ability to get disabled and a push to talk switch feature can be used instead. Apart from that, sound quality and noise cancellation is something you need to put into consideration. Many motorcycle intercoms have the noise reduction feature with digital signal processing which helps reduce the noises/sounds they pick up from your microphone; this feature is especially important if you are a fast rider.

For those who like riding with some music playing, you should consider going for the motorcycle intercoms which come with either a built in FM stereo, or an auxiliary stereo input for iPod, a Walkman, MP3, or a satellite radio unit. This type of input can also be used to receive driving directions from voice prompted GPS unit.

There are some motorcycle intercoms which can be mounted in your helmet, on your belt clip, on your bike or even put directly to your ears; this usually depends on just how big or bulky the intercom is. Choosing this feature depends on personal preference. You should choose the one that you’d be most comfortable using.

Last but not least, connectivity for cell phones is another crucial factor to consider when choosing a motorcycle intercom. This feature allows you to access the phone’s features while you’re on the road. The feature is best paired with hands free operation.

Without a motorcycle intercom, riding can be a very solitary experience. Using an intercom is a great way of clearing your head and putting your thoughts together when you’re riding alone. However, if you’ve a passenger, or you are biking with another rider, sooner or later you’ll want to converse with them. A motorcycle helmet intercom will let you do this, and so much more.

That being said, the problem is that there are very many motorcycle intercoms to choose from. And given the fact that motorcycle helmet intercoms need to work in extremely difficult environments, choosing the best one can mean all the difference between enjoying your ride and hating it. Below, we are going to give you the different types of motorcycle helmet intercoms available, to help you make the best choice for your particular needs;

Acoustic Motorcycle Intercom

This is the most basic form of the motorcycle helmet intercoms. With this type of intercom, there are no electronics involved since it uses hollow tubes which have rubber tips that are normally inserted into the rider’s ear. A different tube is used as a mouthpiece for talking into, and they both connect through a junction box. This system simply uses the hollow tubes which the voices travel through.

One of the main benefits of a walkie talkie headset is the fact that you’ll find no batteries to mess with; this makes them highly reliable. However, there is no amplification which means that there is no way of regulating or adjusting the volume or filtering the wind noise. therefore at high speeds, it’ll likely be much harder to listen to. Another issue with this system is the fact that many riders tend to realize that the ear plugs are uncomfortable in their ears for an extended period of time. These acoustic motorcycle intercoms only work with driver to passenger and not bike-to-bike.

Wireless Intercom Technology

This is a most complex and technologically advanced system as it utilizes different forms of radio technologies namely FM, GMRS, FRS and Bluetooth.

FM (abbreviation for Frequency Modulation) is widely used because it’s very efficient when it comes to transmitting clear sound, however, if it’s used by driver to driver, its’ performance isn’t good if they’re too far apart. It is quite similar to the FM radio you normally listen to, however for the motorcycle intercom, a much narrower frequency is usually used. The FM intercoms work best when there aren’t any kind of obstructions (like hills) between the receiver and the transmitter.

If long range is the most important feature, then the GMRS Walkie talkie headsets will offer a much better performance. The FRS (abbreviation for Family Radio Service) and GMRS (abbreviation for General Mobile Radio Service) are the modern equivalents to old walkie talkies you might have used during your childhood days. The FRS intercoms typically have a maximum range of 2 miles provided there are minimal obstructions in between, while the GRMS intercoms can effectively communicate up to several miles. Just Like the FM, these two are public frequencies which means other people can get to hear your conversations, and vice versa. In some heavily populated areas these FRS/GRMS radios are heavily used, while out on the open road you should enjoy fairly private conversations.

One great thing about using the FRS or GMRS walkie talkie headset is that you can visit Headsetonline and purchase a walkie talkie headset and handheld radio which you can use to contact these units. In case someone is following you in a car, or they have a wired intercom system which allows them connect to an FRS or GMRS handheld radio, they will be able to communicate with you. The only downside is that you’ll find countless of these radios in the heavily populated areas and you’ll end up picking up lots of other transmissions.

[jbradenworld]

Two way communication devices

New Post has been published on http://www.twowaycommunication.co.uk/?p=404

MIT's new method of radio transmission could one day make wireless VR a reality

VR is the Buzz word for this year, every technology company clambering to get their headset out on to the market. Much of the market needs to catch-up though, the power of home computing needs to improve and removing the inevitable extra cabling and wires that come with current headsets. Luckily this article is about the future technology of VR headsets, see what we can expect as this technology grows.

If you want to use one of today’s major VR headsets, whether the Oculus Rift, the HTC Vive, or the PS VR, you have to accept the fact that there will be an illusion-shattering cable that tethers you to the small supercomputer that’s powering your virtual world.

But researchers from MIT’s Computer Science and Artificial Intelligence Laboratory (CSAIL) may have a solution in MoVr, a wireless virtual reality system. Instead of using Wi-Fi or Bluetooth to transmit data, the research team’s MoVR system uses high-frequency millimeter wave radio to stream data from a computer to a headset wirelessly at dramatically faster speeds than traditional technology.

There have been a variety of approaches to solving this problem already. Smartphone-based headsets such as Google’s Daydream View and Samsung’s Gear VR allow for untethered VR by simply offloading the computational work directly to a phone inside the headset. Or the entire idea of VR backpacks, which allow for a more mobile VR experience by building a computer that’s more easily carried. But there are still a lot of limitations to either of these solutions.

THE MOVR PROTOTYPE SIDESTEPS TETHERED VR ISSUES

Latency is the whole reason a wireless solution hasn’t worked so far. VR is especially latency-sensitive, along with the huge bandwidth requirements that VR needs to display the level of high-resolution video required for virtual reality to work. But the MIT team claims that the millimeter wave signals can transmit fast enough to make a wireless VR headset feasible.

The issue with using millimeter wave technology is that the signal needs a direct line of sight, and fares poorly when it encounters any obstacles. MoVR gets around this by working as a programmable mirror that can direct the direction of the signal to the headset even while it’s moving to always make sure the signal is transmitting directly to the headset’s receivers.

For now, the MoVR is simply a prototype, with the team hoping to further shrink down the system to allow for multiple wireless headsets in one room without encountering signal interference. But even as a proof-of-concept, it’s an interesting perspective on how virtual reality could one day work.

[jbradenworld]

Bicol Radio Blog

New Post has been published on http://www.bicolradio.org/?p=196

Software Defined Radio (SDR) Market Forecast By End-use Industry 2014-2020

We are seeing a monumental movement in the radio communication industry, as this very technical article shows the transition from hardware to software within the radio communication industry is just around the corner. With 3G and 4G providing Data and Voice Comms covering large distances, RF...