New Technology May Double Radio Frequency Data Capacity

A team of Columbia Engineering researchers has invented a technology—full-duplex radio integrated circuits (ICs)—that can be implemented in nanoscale CMOS to enable simultaneous transmission and reception at the same frequency in a wireless radio. Up to now, this has been thought to be impossible: transmitters and receivers either work at different times or at the same time but at different frequencies. The Columbia team, led by Electrical Engineering Associate Professor Harish Krishnaswamy, is the first to demonstrate an IC that can accomplish this. The researchers presented their work at the International Solid-State Circuits Conference (ISSCC) in San Francisco on February 25.

CoSMIC (Columbia high-Speed and Mm-wave IC) Lab full-duplex transceiver IC that can be implemented in nanoscale CMOS to enable simultaneous transmission and reception at the same frequency in a wireless radio

“This is a game-changer,” says Krishnaswamy, director of the Columbia high-Speed and Mm-wave IC (CoSMIC) Lab. “By leveraging our new technology, networks can effectively double the frequency spectrum resources available for devices like smartphones and tablets.”

In the era of Big Data, the current frequency spectrum crisis is one of the biggest challenges researchers are grappling with and it is clear that today’s wireless networks will not be able to support tomorrow’s data deluge. Today’s standards, such as 4G/LTE, already support 40 different frequency bands, and there is no space left at radio frequencies for future expansion. At the same time, the grand challenge of the next-generation 5G network is to increase the data capacity by 1,000 times.

So the ability to have a transmitter and receiver re-use the same frequency has the potential to immediately double the data capacity of today’s networks. Krishnaswamy notes that other research groups and startup companies have demonstrated the theoretical feasibility of simultaneous transmission and reception at the same frequency, but no one has yet been able to build tiny nanoscale ICs with this capability.

“Our work is the first to demonstrate an IC that can receive and transmit simultaneously,” he says. “Doing this in an IC is critical if we are to have widespread impact and bring this functionality to handheld devices such as cellular handsets, mobile devices such as tablets for WiFi, and in cellular and WiFi base stations to support full duplex communications.”

The biggest challenge the team faced with full duplex was canceling the transmitter’s echo. Imagine that you are trying to listen to someone whisper from far away while at the same time someone else is yelling while standing next to you. If you can cancel the echo of the person yelling, you can hear the other person whispering.

“If everyone could do this, everyone could talk and listen at the same time, and conversations would take half the amount of time and resources as they take right now,” explains Jin Zhou, Krishnaswamy’s PhD student and the paper’s lead author. “Transmitter echo or ‘self-interference’ cancellation has been a fundamental challenge, especially when performed in a tiny nanoscale IC, and we have found a way to solve that challenge.”

Krishnaswamy and Zhou plan next to test a number of full-duplex nodes to understand what the gains are at the network level. “We are working closely with Electrical Engineering Associate Professor Gil Zussman and his PhD student Jelena Marasevic, who are network theory experts here at Columbia Engineering,” Krishnaswamy adds. “It will be very exciting if we are indeed able to deliver the promised performance gains.”

This work was funded by the DARPA RF-FPGA program

Thankyou to columbia.edu for the tireless research, this really is an exciting invention, the possibilities if this can be brought to our industry are unbelievable.

Security Earpiece For the iPhone

With every passing day, technology is improving and it has made lives of people easier and better in many ways. Some of the latest technologies and gadgets have really been helpful to many people. If you look at the security earpiece then you will understand how advantageous it is for specific people. There are different types of these earpieces available and you can also get these for your iPhone. You just have to check whether or not these are suitable and compatible with your handset.

Use Of Security Earpieces

These earpieces are only required when you want to communicate with someone secretly. The security earpiece is fitted into the ears and normally people around you cannot see it. It is small and is connected by a very thin wire. Security personnel mainly use these types of earpieces. But people also use this when they are in a conference and want to communicate or hear something while communicating. You can also find it useful in movie sets, broadcasting of radios etc. Even it will be great for using inside classrooms and not getting caught by teachers!

This is quite small in size the voice transmitted via this cannot be heard outside. Only the person who is wearing it can hear the voice. Thus, you can secretly converse with someone while none will even know about it. In case of audio surveillance, security guards and bodyguards use this earpiece to make sure they can hear each and everything distinctly. When a person is speaking on radio in front of a microphone, he/she has to make sure that even a message comes through the earphone it is not heard outside. So, with the help of the security earpiece it is very much possible.

Connecting To Mobile

Though these earpieces are meant mainly for security purposes, many people find it cool! They use this as a style statement and wear it just for fun. It has become a part of cool accessories which many enthusiasts prefer to use while going out. It is not necessary that you have to be a spy, bodyguard or a secret agent in order to buy or use this. You can simply buy one security earpiece for your iPhone too. it also comes with a separate mouthpiece which you can put on anywhere you feel comfortable.

If you are an owner of an iPhone then you can get the security earpiece for your particular handset. The jack which will be connected to your earphone port of the mobile has to be compatible to each other, normally a 3.5mm Jack. If not then you will not be able to hear or listen to anything. This is very much important. So, it is best to buy the security earphones specially made for each model of iPhone. With the help of this you can talk over phone while driving or even you can hear songs and watch movies.

Some Useful Tips

Since you have to wear these earpieces inside your ears, you have to be much more conscious of it. Make sure that you are not allergic to the material by which earpiece is made up of. If you are then avoid using that material as it can be harmful for you. The earpiece is fitted inside the ear exactly beside your eardrum. While wearing it you have to be careful about whether or not the earpiece is touching your eardrum. If it is not touching then you will not be able to hear anything or you will hear a low voice. When you are done you have to take out that earpiece as well. In this case also you have to be very much careful.

Your ear, mainly eardrum, is very much sensitive. You have to make sure that the security earpiece you are buying for your ears is not made up of some low quality material. It can react badly with your inner ear skin. So, when you are buying one for your iPhone, you have to choose the best one made up of high quality material. These are mainly available in rubber and thus you have to confirm that you are not allergic to it. This is surely a great technology and a cool accessorise for the one who want to use it just for fun for their iPhone.

When Bob Woolmer and Hansie Cronje fell foul of the ICC in their attempt to use technology to help their communication

While technology has come to play an increasing part in the modern game, when the captain is in the middle he remains very much on his own, able only to draw on advice from his team-mates and the occasional message from the dressing room surreptitiously brought out by a water carrier or physio. But at the 1999 World Cup, South Africa tried – and failed – to find a way around the problem.

For more than a year before the tournament, Bob Woolmer (at the time South Africa’s coach and always someone looking for new approaches to old problems), had been toying with an idea he had seen work in US sport where it was common practice for players to wear small earpieces to allow them to hear instructions from coaches.

Woolmer tried the equipment in a couple of benefit matches during the year; it worked well and, just as importantly, went almost unnoticed. After checking it did not breach either the tournament regulations or the laws of cricket, he suggested to Cronje they use it in the tournament itself. He agreed and when the proposal was mentioned to Allan Donald, he too said he was willing to give it a try.

South Africa tried the earpieces out in one of their warm-up matches and again it attracted no comment, so they decided to use them when South Africa played India in the two sides’ opening game in Hove on May 15. Mohammad Azharuddin won the toss and batted and when Cronje led his side on to the field he and Donald had their earpieces in place.

It did not take long for the television commentators to spot them, and Sourav Ganguly, who opened for India with Sachin Tendulkar, also noticed, bringing it to the attention of the umpires, Steve Bucknor and David Shepherd, shortly before the drinks break.

The umpires spoke to Cronje, who was quite open about what was going on. Unable to decide if what he was doing was legal, they asked Talat Ali, the match referee, for a ruling. He too was unsure and contacted the ICC, which said that while the earpieces were technically not breaching any rules, they were unfair. As drinks came out, so did Ali, making clear the earpieces had to go. Although the audience on TV was privy to the discussion, most spectators at Hove were left bemused, so small were the devices that were being used.

South Africa went on to win the match and afterwards Woolmer was unrepentant. “All I was trying to do was give help and advice,” he said. “I’m sorry if I’ve upset anyone. I’ve tried to be innovative; the idea was to take the game forward. Where we erred was, I should have asked the ICC for permission. Perhaps I’m naive, but it didn’t occur to me. I felt it was a really good idea and I would like to discuss it with the ICC.

“I’m not trying to disturb the batsman or the captain, I’m just wanting to offer some advice. They use it in American football and I believe the French used it in their World Cup campaign, so I felt it was a really good idea. Hopefully, it will make life easier for the cricketer.”

He also went out of his way to explain the system was not aimed at giving instructions. “If Donald, for example, is not bowling with rhythm I could tell him to run in harder or more softly. It is a way of addressing technical faults by looking at the game from a different angle.”

Cronje was also dismissive of criticism. “There’s nothing in the rules to stop us from using it and it’s very disappointing it’s been stopped,” he said. “The coach sits at a different angle from me and he can give me different options when we’re batting or bowling. It’s always nice to hear another voice.” He also asked if the ICC was going to ban gloves being taken out to batsmen “in case a message from the coach is sent with them”.

If the media hoped Azharuddin would be incensed, they were disappointed. “It’s going to happen,” he said. “It does in other sports.”

ICC spokesman Clive Hitchcock said: ‘We made our position clear when we said that the World Cup is not the event to experiment with new devices. We would listen to anything the South Africa management had to say on the issue, but in view of the fact that we would have to get all the countries together to discuss the issue, it is unlikely these devices will be used again in the current tournament. There may be nothing in the rules banning them but neither is there anything there saying that they can be used.”

When the press asked Ali Bacher, the chief executive of the United Cricket Board of South Africa, for his opinion, he admitted he was aware of Woolmer’s innovation. “Bob came to me about 15 months ago to ask about it and I told him at the time that it could be controversial,” he said. “But Bob has a hyperactive cricket brain and sometimes he gets ahead of himself.”

The South Africans left Hove still hoping they would be allowed to use the earpieces but the ICC made clear it was not going to budge and that was that.

What happened next

  • The ICC subsequently banned the use of such devices but Woolmer was undeterred. “I believe that technology is the way to go forward and we will be using earpieces in the nets at Warwickshire so that I don’t have to keep interrupting players to make my point. But I am also hopeful that I can persuade the ECB to allow the use of earpieces in second team cricket to show that they can be a real help to captains and players.”
  • Less than a year later Cronje was uncovered as a match-fixer and subsequently banned from the game. He died in an air crash in 2002.
  • Woolmer resigned as South Africa coach at the end of the tournament and returned to Warwickshire. He died in suspicious circumstances during the 2007 World Cup.​​

With the end of the Cricket world cup approaching, we still don’t see any modern communications coming into the game, does it matter that the coaches are able to communicate better with their players? other sports allow the coaches to shout and lead players, why wouldn’t cricket? you can find the original source of the article here

Do all Motorola Walkie Talkies work with each other?

One of the most commonly used communication devices is the walkie-talkie. Its use is not only for business operations, but it is also highly loved by kids and parents give them as presents due to their cheap nature. Someone would never require getting in a physical store to purchase a Motorola walkie-talkie as there are many online stores selling them.

Where to use a Motorola walkie-talkie

• Use walk-talkie for some outdoor activities like climbing, snowboarding, and ski-ing

Some of the outdoor activities require you to be out in areas where there is no mobile network coverage. Although some of the areas may have support for mobile network, using a phone may turn to be more expensive. Moreover, mobile phones operation in such areas may be expensive and many people would never use them if given a chance. A Motorola radio can be useful in such areas as it provides a way for keeping in touch with your friends or relatives.

• Use the walkie-talkies for communication in a restaurant, clubs, bars and even pubs

Clubs, restaurants or bars having large customer circulation may highly require the use of the device to pass information within the premises to save time. Using a mobile phone in such a place can be expensive and may highly increase the expenses therefore reducing the profit margin. Mostly they can be essential for security purposes and the door supervisors can use them in their work. The other staff may also find them useful in their operation as movements will be highly reduced.

• Make use of them in monitoring your baby

Monitoring your baby while in holiday at times may turn to be hectic. Purchasing a pair of Motorola radio can highly assist in this monitoring. You may use them as long range baby listeners as they can cover a wider range than you may ever expect.

• Make use of Motorola radios in schools and colleges

There are many communication issues that usually surround a school or a college campus. At times you may find the staff members moving for long distances which may make the task of tracking them when needed hard. Also some schools or colleges may not have their staff members being desk based hence they may not be having a telephone. Providing every member of staff with a Motorola radio can highly solve some of the tracking challenges.

Do all Motorola walkie-talkies work with each other?

Yes, all Motorola radios will work with each other. All the models use GRMS/FRS frequencies, which allow their compatibility. To enable the compatibility, you only need to tune your radio to the same channel as your colleague and you will communicate effectively.

The family radio system (FRS) has been in use in the United States since 1996 and it uses channels in the ultra high frequency (UHF), which protect it from interference from citizen band or other frequencies found in baby monitors. FRS systems use the frequency modulation (FM) and therefore has wide range coverage compared to other systems.

Advantages of using a Motorola radio as a communication device

1. It is almost a no cost device of communicating to any person

After purchasing a communication radio you will not be liable for license charges, monthly charges or even contract charges as its use is absolutely free. The only cost you can expect is the recharging of the battery.

2. It’s the best communication device for people working for emergency situations

People offering emergency services like a building collapse or fire fighting highly require the device in their communication.

3. They are highly convenient

If you need to keep in touch with a person who lives near you, a walkie-talkie can serve you better compared to a mobile phone. You will never need to pay any charges and therefore you can communicate with your colleague any time you wish and also you are the only one who can end your talk.

4. They come in a variety of forms

When purchasing the device you are required to select from the many shapes, forms, types and even color that suits your taste. Manufacturers are always aware that kids will like their devices to be different from those of their friends and they will always design them in many ways. Walkie-talkies will allow instant connection at any time

Earpiece comes in handy for hands-free phone

The source of the piece of writing is here – this website

The last time I remember being hands free was when I was in high school, riding my bicycle hands free.

No hands on the handlebars while I bicycled with my golf clubs to Green Acres – no kidding – Country Club in Donnellson, Iowa. My 10-speed was a marvel in balance. It certainly helped that Donnellson was flat and the streets well-paved, as well as completely lacking in traffic.

I could maneuver the mile to the golf course without putting my hands on the handlebars, except to make turns. It probably was dangerous, and police probably would pull me over now for hands-free bicycling.

Why I didn’t crumple up into a pile of bicycle and blood is beyond me. But I had hardly a care in the world when I was biking to the golf course or other points in between. And this was before helmets and the notion of traumatic brain injuries. I was just a kid.

Now, hands free takes on a new meaning in Illinois. It’s not about bicycling; it’s about driving.

And, as of Jan. 1, it is illegal to talk on your cellphone while driving if you are holding it up to your ear. Police can pull you over if they see you and give you a $75 ticket first time out. And if you don’t get it the first time, the second time you are pulled over, the ticket is $100. After four times, you could have your license suspended.

I don’t want a ticket. No call is worth $75. And you would have to be plain dumb to lose your license over cellphones.

I’ve had a cellphone for almost nine years; I think it came inside our wedding cake. For all my life, I had been tied to the landline, only it wasn’t called a landline. It was called a telephone, and it was attached to the wall. And if you wanted to make a call, you were attached to the wall.

I was a latecomer to cellphones. In fact, I was anti-cellphone. If I had a cellphone, it meant that I was connected to the world at all times; there was no getting away from it. Of course, if it rang, you would answer it. No matter where you were. In the living room. In the bathroom. Egad. In the car. There was no escaping the world with a cellphone. I wanted that escape.

But I’ve come to find out that I do not receive a lot of telephone calls. And I do not make a lot of telephone calls. I haven’t done a thorough analysis, but I think most of the telephone calls I receive come from my pharmacy, my friendly pharmacy. Completely computer generated.

My good wife comes in second. We’re really never that far apart to need to call.

But call I do on my way home from my Friday evening appointments, talking all the way from the parking lot to our driveway. I make the call to let her know I’m on my way home, giving her a chance to fire up the oven for the pizza.

And I’ve been doing this with one hand on the steering wheel and one hand to my ear holding the phone. It’s never been a problem. Not even close. It’s like talking to someone in the passenger seat. It’s hardly a distraction.

But it is a distraction, according to Illinois state law. And distractions cause crashes.

So, instead of holding the phone to your ear, you have to use hands-free technology, such as a Blue Tooth device, an earpiece, a headset or a speakerphone. The Blue Tooth is out of the question. People who use those devices look like they have cicadas sucking on their ears. Ugh.

An earpiece came with our cellphones, and that is what I am left to use.

I gave it the first try a couple of weeks ago, and I don’t see how it improves safety over a handheld phone. But greater minds than mine prevail in Illinois.

It took several minutes – before I started the car – to figure out how to plug the earpiece into the cellphone. Then I had to fairly jam the earpiece into my ear so it wouldn’t fall out or puncture my eardrum, then I made the call to my wife, and then I started the car. By the time I was in reverse, I was talking on the phone hands free.

The call was amazingly clear compared to the last time I tried using an earpiece years ago. I could hear my wife and she could hear me. Amazing.

But I was afraid the earpiece would fall out if I moved my head too quickly, and that’s enough to get into a crash. I am guessing the more I use the earpiece, the more comfortable I will become, and it won’t be long before it is second nature. Just like riding a bike. Hands free.

Review of the Motorola DP2600 2 Way Radio

When it comes to creating of digital communications throughout your company, MOTOTRBO digital radio solutions can help keep all your employees connected. The Motorola DP2600 is a hand-held two-way radio that comes with all the latest digital technological advances. These small portables deliver on affordability and high digital quality, allowing all of your employees to speak and hear clearly regardless the working conditions.

The Motorola DP2600 display model features programmable buttons, 16 channel capacity, and water protection IP55 specifications. The volume of the radio adjusts automatically to be able to compensate for any background noises. This best-in-class technology provides a scalable solution for any communication needs within the company. The crystal clear screen allows easy navigation and install call recognition.

The reason the DP2600 is so versatile is because it is available in both VHF and UHF frequencies, with a two-line display and simple to navigate keypad that is able to handle up to 128 channels. The three programmable buttons are simple to access, the tricolor LED provides crystal clear visual feedback on the status of the operating system of the radio. The screen is easily viewable day or night, and the large textured talk button is easy to find in any conditions.

Some of the reasons the DP2600 has become one of the popular choices in the construction and assembly line industry is the compact design and the noise reduction capabilities and safety features.. The ability to switch between group or individual calls is simple, while the PTT ID is designed to simplify the system disciple and efficiency of communication. The remote monitoring system ensures employee safety while on the job by enabling quicker assessment of the remote users status.

Calls received on the DP2600 connect on the first time thanks to the unique channel scanning technology. No tools are needed to attach remote accessories to the DP2600 because it comes equipped with an accessory connector. Through the software purchase you can upgrade the radio privacy feature, transmitting interrupt, and five tone signalling. The DP2600 comes with VOX capabilities and Intelligent Audio for automatic volume adjustment to compensate for any degree of noise within the workplace that could affect sound quality.

This hand-held two-way radio IP55 sealing ensures continued operation in the harshest of working conditions. Equipped to handle multiple site coverage with the IP site connector, the DP2600 will keep everyone in the pipeline in communications with each other via the Capacity Plus and Lined capacity Plus features.

College Quarterbacks’ Earpieces

Quarter backs plays an important role in American football. They are charged with the role of moving the team forward and ensuring that the play is perfect and that every move is coordinated towards the rival side in order to win. They act as leaders of the offensive team and are responsible for calling the play in the huddle. Do college quarter backs wear earpieces? That is always a million dollar question to every fan.

Due to their important role, defensive backs are allowed to wear earpieces in order to receive instructions from the coach as well as get the best tactics on how to make the best moves and ensure that they are able to push the rival team. Instructions come from the coaches since they are at a vantage point to clearly observe the other team and notice the flops of their team as they look forward to counter the other team and pursue them to make the best drills through the defensive backs.

Quartet backs are well familiar with their role and for this case the wearing of earpieces is very important in the game and tackles. It provides them with the idea of what to do next and avoid making similar mistakes since a quarterback acts as the team’s driver. A quarterback will play well, with his confidence boosted and therefore the team performance will definitely be improved as much different calls for the play are made. It is a perfect mechanism employed to lure the other team and ensure that victory is directed to the team with a great quarter back. Do college quarterbacks wear earpieces? The answer is yes, the coach always has a hard task while selecting a quarter back since his role is great and it demands somebody with the ability to multitask, this to play, listen and lead the entire team to the decisions that he has been instructed without necessarily having to fail.

Earphones are perfectly designed and well fit in their helmet so that the quarter back can receive instructions clearly. They are well made to ensure that there is clear communication when it comes to getting the instructions as the game progresses. Much of the information relayed is the offensive play in and it serves an important fundamental role in ensuring that communication is paramount to the outcome of the game, for example, getting instructions like triple actions means that the quarterback will only pass the ball a few times in the game.

The earpiece does not run on throughout the game, it is designed to be automatically switched off at W15 seconds left on the play clock, a dedicated official in the college American Football is charged with this role to ensure that all is well. Once switched off, the radio is not turned on until the end of the game. Due to this unique advantage to the quarter back, he is allowed to have a designated W/a green dot placed on the back of the helmet. He is unique and plays such an important role in the game thus having to acquire this different stature.

How Do You Choose a Good 2 Way Radio?

Choosing a good two-way radio is relatively easy. In fact, the vast majority of radios are good in the sense that they will do their specified job to a reasonable standard.

With the majority of two-ways, you don’t need to worry about operating systems (like you would with tablet PCs) or compatibility issues* (like you would with games consoles). All you really need to worry about, in fact, is what you want to use your radio for; this is by far the most important question you need to ask yourself if you’re ever buying a walkie-talkie or two-way radio.

If you’re just looking for a way to keep track of the kids on your next cruise, or you want something to add a bit of fun to your next outdoor excursion, then all you really need to do is find a trusted brand and buy a medium-priced model. It’s as simple as that. However, if you’re a businessperson and looking to buy a radio with a license, then you need to be a bit more careful. In that respect, you definitely want a trusted brand and you definitely want to consult a specialist before you invest in your equipment.

If you happen to fall somewhere in the cracks between these two examples, we’ve prepared a fact sheet (of sorts) for you.

  • There are Four Main Types of Two-Way Radio

GMRS (General Mobile Radio Service) – Is a higher-powered radio, popular for its reliability and versatility. GMRS is the most common choice among users.

FRS (Family Radio Service) – Is usually more of a basic model, lower powered, but generally cost-effective.

MURS (Multi-Use Radio Service) – Is an unlicensed radio that only has a limited capacity. MURS radios are not a particularly popular choice, although they do have their adherents.

And finally,

CB  (Citizen’s Band) – It is called different things in different countries, but CB is a personal service and is a popular choice, however it does require a long antenna. Good for drivers, though.

  • Wattage is Important

No, we’re not talking about that Italian-sounding hybrid of a bluebottle fly and Cyril Sneer from the Star Wars prequels here; wattage is the measurement of watts, as in power output. Wattage is important in radios because it affects licensing. In the UK, for example, radios that have a power output greater than 0.5 watts require a license to use.

It is also important to note that any radio, no matter the power output, will automatically downgrade to a half watt when operating on FRS-specific channels.

  • Keep Signal Coverage in Mind at all Times

Two-way radio manufacturers do a lot of lying and exaggerating about the range of their products. Their claims almost never take into account the signal interference caused by objects in the way, natural obstacles, atmospheric conditions and a plethora of other variables.

On average, the actual signal coverage for any given radio is between one and two miles. CB radios can communicate over longer distances, but those extra long antennas can make them tough to carry around!

  • Privacy Codes are Useful Things

If you’re using your radio in a busy area (i.e. where there are lots of other radio signals bouncing around), you will probably find that the available channels get used up pretty quickly. However, a radio that provides CTCSS will offer a privacy code function that allows you to subdivide your channels by creating a combination of channel and code, this will allow you to better communicate with others, even if the available channels are full.

It should be noted, however, that this function does not make your conversation private; it just reduces the levels of other signals in the area that your device may be intercepting.

A Look at the Motorola DP4400

Motorola DP4400 is a device that is capable of transforming your enterprise by making employee interactions much smarter and safer. The device features best-in-class audio and high-tech data capabilities; all meant to bring a new revolution in the world of communication.

The DP4400 delivers admirable voice quality and enables for seamless data communications through integrated GPS and Bluetooth audio capabilities. Besides that, this device is built with an intelligent audio and customizable voice announcement feature.

Because the radio is available in both UHF and VHF frequency bands, it is extremely easy to use. It offers 32 channel capacity and five buttons that are programmable. An emergency button is provided ad well alongside FM intrinsically safe options. Moreover, the device is made with IP57 specifications to enhance submersibilty.

Features of this product in brief

- Advanced signaling capabilities

The radio is available in UHF (403-527 MHz) or VHF (136-1774 MHz). It features 32 channels and 5 tone signalling capabilities. Its large and textured push-to-talk button makes it extremely easy for the programmer to tailor the use of 3 buttons – in order to increase operator efficiency.

- Easy to use and program

Besides being easily programmable, this radio features a Tri-coloured LED which enables for crystal clear visual feedback on the operating status of the radio. There is also an emergency button which is provided to ensure rapid reporting and response during critical situations.

- Effective, efficient and operable

Another admirable feature to be found on the Motorola DP4400 has PPT ID which is meant to improve communications efficiency and system operability. Its remote monitoring features go a long way to ensure user safety alongside enabling prompt assessment of remote user status. To make it even more effective, the radio comes with elegant channel scanning schemes a feat that makes it extremely easy and fast to receive calls every time.

- Enhanced audio capabilities

With a loud front-facing speaker and an intelligent audio feature which is designed to adjust the volume of the radio depending on the noise levels of the surrounding when in use. Besides its powerful audio features, the radio makes it possible to send programmable update messages when messages need to be conveyed without interrupting other workers or guests.

- Wide ranging data applications

This radio features one of the largest collections of Application Developer Programs. All applications are customized to include unique features such as email gateways, location tracking and work order ticket management.

A final word on product

Motorola DP4400’s diverse portfolio and high security features make it ideal for government and public safety.

What are the benefits of the Motorola DP2400?

If you work on a construction site or in a factory, you know how imperative it is to keep your employee safe at all times. MOTOTRBO digital radio solutions can help you achieve exactly that, providing you with the chance to communicate with other members of staff quickly, safely, and effectively.

The Motorola DP2400 is one of the world’s most advanced digital radio solutions, and can be used in a number of different environments, from production lines to construction sites. Just give your team the communication device in order to improve safety in the workplace. The product comes with intelligent voice announcement and audio features which facilitate easy communication in work environments that require instant contact with other staff. The product is available in both VHF and UHF frequency bands, giving you greater flexibility than ever before. You’ll also be able to upgrade to digital at your own pace, and take advantage of a wealth of different features.

Product specification

The DP2400 features 16 channel capacity, IP55 specifications for water protection, and three programmable buttons. The VHF frequency operates on 136-174 MHz, while the UHF frequency operates on 403-527 MHz. With a three-color LED screen for visual feedback when operating the digital device, the product has large push-to-talk buttons which ensure instant communication wherever your staff are. The product is easy to use, and comes with a full instructional guide – with all the information you need to get started. You will also be able to contact Motorola if you have a technical query, or just need some more advice on how to use the Motorola DP2400 to its full capability.

Other features

Other product features include two programmable buttons which can increase operator efficiency, analogue mode, and a remote monitor which can allow you to quickly assess remote user status and make sure your employees are safe. Group, All-call and individual capability is also available. The product has an attractive design, with VOX capability, five tone signalling (via software purchase), and privacy features (with even more privacy options via software purchase). You’ll be able to quickly attach and remove accessories without using a tool with a new accessory connector, and take advantage of intelligent audio which adjusts background noise and makes communication clearer (ideal in noisy workplaces like construction sites and factories). The product also provides conventional multiple site coverage, as well as capacity plus and linked capacity plus via software purchase.

Natural History Museum Replaces Dippy Dinosaur With Blue Whale Skeleton

Directors of the Natural History Museum in London have announced that ‘Dippy’ – the famous diplodocus skeleton that greets visitors in the museum’s iconic Hintze Hall – will be replaced by the skeleton of a blue whale by 2017.

The idea is to better convey a more modern feel to the museum, one that reflects the cutting-edge science being conducted by the institution.

“Everyone loves ‘Dippy’, but it’s just a copy,” NHM director Sir Michael Dixon told BBC News, “what makes this museum special is that we have real objects from the natural world – over 80 million of them – and they enable our scientists and thousands like them from around the world to do real research.”

At present, the 25m-long blue whale is hanging –in a flat position- in the ‘mammals’ gallery and is accompanied by a life size reconstruction of the animal.

The skeleton was acquired by the museum in 1891 and it originally cost curators £250. The massive animal was beached at Wexford in Southeast Ireland and its remains were immaculately processed and preserved. To date, it is one of the biggest – and best-preserved – whale skeletons in the world.

Over the coming two years, the entire skeleton will be taken down and each individual bone will be thoroughly cleaned and carefully catalogued before it is re-structured and placed in a dramatic new pose, ready to better symbolize the new science of the 21st century.

The massive remains will be placed in a graceful diving posture designed to impress visitors to the hall.

By virtue of being the largest animal to ever exist on our planet, the blue whale skeleton will likely present an even more impressive sight to behold than Dippy presently does. Its presence could also help to raise awareness for whale conservation and preservation of our natural heritage in general.

The conservation aspect of this move is an especially relevant point, as it was NHM scientists that first demonstrated that hunting of the blue whales needed to be stopped in the first place.

This move, whilst surprising, is not without precedent. In the past, the Hintze Hall has also featured a complete sperm whale skeleton as its main attraction, as well as carefully preserved African elephants – and other displays as well.

So where will Dippy be going once his replacement arrives? At present, there is talk about taking the iconic dinosaur on tour in order to bring the Natural History Museum to the people, by housing him in regional museums throughout the UK.

Before that happens though, he will likely still have pride of place in a dinosaur-themed exhibit elsewhere in the museum, so we’ll still be able to stop by and say “hi”..

Veteran Stage, Screen and Star Trek Actor Leonard Nimoy Passes Away, Aged 83

Veteran actor and director Leonard Nimoy has passed away aged 83.

The actor, who was best known for his portrayal of the half-Vulcan science officer Mr. Spock from the Star Trek franchise, was also notable for directing two of the Star Trek movies (the third and fourth instalments, respectively), as well as the popular 1987 comedy Three Men And A Baby.

Tributes to this iconic TV and film personality have flooded in from all angles, from Canadians defacing their $5 banknotes by ‘Spocking’ them, to a unique and exceptionally touching tribute from astronaut Terry W. Virts, who took a photo of a Vulcan salute given whilst aboard the International Space Station, just as the vessel passed over the actor’s home town of Boston, Massachusetts.

Further tributes from Nimoy’s colleagues in the arts and entertainment industries, and elsewhere, have been touching and, at times, surprising.

Long time co-star William Shatner (who portrayed Captain James T. Kirk in the original Star Trek series, as well as 7 of the related feature films), said of Nimoy “I loved him like a brother. We will all miss his humor, his talent, and his capacity to love.” George Takei, also a Star Trek co-star, called him not only an “extraordinarily talented man” but also noted that he was “a very decent Human being”.

US President Barack “I loved Spock” Obama said of Nimoy that he was, “a lifelong lover of the arts and humanities, a supporter of the sciences, generous with his talent and his time.” Such an admirer of Nimoy’s was the US President, that when they met in 2007, Obama actually greeted him with a Vulcan salute.

Astronaut Buzz Aldrin, the second man to walk on the moon, praised Nimoy for making “the journey into the final frontier accessible to us all”.

Fellow sci-fi Actor Christopher Judge, whose film credits include The Dark Knight Rises, but who is most famous for his portrayal of Teal’C in TV’s ‘Stargate SG-1′ Tweeted, “RIP Mr Nimoy. I hope my eyebrow made you proud. It was a ten year homage to you sir. You are my hero. Indeed”

The flood of tributes directed at Nimoy’s passing not only reflect his status as an icon of television and film, but also his generosity of spirit.

In 2014, actor Walter Koenig, who played Pavel Chekhov in Star Trek, revealed that Nimoy had personally appealed to the show’s producers to have African American actress Nichelle Nichols’ pay raised to equal that of co-stars Koenig and George Takei, which they then did. Nimoy also refused to voice the character of Mr. Spock in Star Trek: The Animated Series unless the producers first hired Nichols and Takei, who had not been cast at that time. For this, and many other acts of kindness on set, ‘Star Trek’ creator Gene Roddenberry was known to refer to Nimoy as “the conscience of Star Trek”.

Speaking following her long-time colleague’s death, Nichols, 82, said, “His vision and heart are bigger than the universe. I will miss him very much and send heartfelt wishes to his family.”

Away from Star Trek, Nimoy was also notable for his occasional TV appearances in The Simpsons and Futurama, as well as his hosting of paranormal series In Search Of… and his recurring role in Mission: Impossible.

Nimoy also appeared in small parts, or Guest Star slots in iconic US shows such as Dragnet, Wagon Train (which is ironic, as Trek creator Gene Roddenberry originally pitched his show as Wagon Train to the stars!), Bonanza, Columbo Rawhide, The Man From U.N.C.L.E and, more recently, Big Bang Theory.

Other fan-favourite credits include his voicing of the character Galvatron in the cult 1986 animated feature Transformers: The Movie and his performance in 1978’s critically-acclaimed Invasion of the Body Snatchers re-make.

Early in his career, Nimoy also enjoyed a small role in the 1954 science fiction movie Them! which has since come to be viewed as a classic creature feature.

Leonard Nimoy was also a noted stage actor, appearing in plays such as The Fiddler On The Roof, an adaptation of Ken Keseys novel One Flew Over The Cuckoos Nest (in which he played McMurphy), Sherlock Holmes, The King And I, My Fair Lady, Equus and Shakespeare’s Twelfth Night.

He also wrote, directed and starred in Vincent, a play based on the life of Vincent Van Gogh, which he later published in book form.

Away from acting completely, Nimoy was a qualified pilot, a published photographer and sometime musician. He could also read and speak fluent Yiddish. He was also active in several charitable organisations, including the American Cancer Society, the American Foundation For Equal Rights and most famously, the Nimoy Foundation, which was created to “encourage, recognise and support the work of artists” by granting money to aspiring creators.

Nimoy, also a successful author who published a two-volume autobiography beginning with I Am Not Spock and ending with I Am Spock, was also known as a poet, publishing several volumes throughout his later life, some of which also included his photography.

It is fitting, then, that Leonard Nimoy’s final words to his many fans were warm and poetic. Just a few days before he died, Leonard left this message on his Twitter page, “A life is like a garden. Perfect moments can be had, but not preserved, except in memory. LLAP.”

Leonard Nimoy was more than just a legendary TV and film actor; he was a sweet and noble soul. An artist, an inspiration and an ever-popular presence in any role he performed, be it as an alien explorer, a husband and father, or even a grandfather. LLAP.

How to Use a Walkie Talkie Headset

The basic functioning of walkie talkie headsets or two way radios is similar to standard radios. They receive RW or radio waves over the air. Once radios have received the radio waves, they convert it into sound. However, two way radios also convert sound to radio waves and transmit it back to another receiver. In simple words, these special types of radios can receive and transmit a radio signal simultaneously. Moreover, such radios use two different radio frequencies. This ensures that they can receive and send signals at the same time.

Most of the two way radios in modern times also allow scanning. Through scanning, a user can easily check if anyone is sending a transmission on a particular frequency. If the radio which is being used detects a private line tone, it will stop scanning and lock on that particular channel. This will allow the user to speak and transmit on the same frequency. As mentioned earlier, modern radios allow a person to use multiple channels. However, a walkie talkie headset should be able to generate and transmit radio waves in many different frequencies. All the frequencies should have minute fluctuations with each other.

Applications Uses of Walkie Talkie Headsets

These special type of radios have always been in demand even with all the mobile phones and laptops. Such radios facilitate easy accessibility and instant communication. Moreover, you can communicate with a bunch of people at the same time. With such a radio, you don’t have to call everyone individually and spend a lot of your hard-earned money.

These radios can be used for many different purposes. They are often used in public safety, recreation camps, military training and other businesses. Moreover, they can also be used as toys for children. 2 way radios come in many different designs at affordable prices.

These type of radios can also be used in the medical industry. They can be quite useful in admitting patients or attending to people in emergency waiting areas. They also come in handy with outpatient clinics, pharmacies, and surgeries. Such radios can also be used in food industry. They can be used by waiters, kitchen staff and delivery staff in restaurants and so on.

Every person finds it easy to use these radios. Moreover, they are not as complex or difficult to use as mobile phones and other such communication devices. A walkie talkie headset is always the best option to communicate at work, play or home. Such radios can be used in many different situations. Even the most popular communication devices can not challenge the ease of use associated with such radios.

ICC World Cup 1999: South Africa coast to win over India and there is tumult in ear-piece

May 15, 1999.  The atmosphere was touched with merriment and bonhomie as India took on South Africa at Hove in just the second match of the tournament. And before a rather anticlimactic 47th over of the second innings, the match was a close, tense affair. Arunabha Senguptaremembers the day when a superb game of cricket was needlessly marred by an ear-piece controversy and an inebriated fan.

Spoiler alert

It was Lance Klusener who spoiled the fun in the end.

The match had been close, keenly contested. The Indian innings had seen controlled aggression, scientific pace setting. The South African chase had been crafted with care, the race between the balls remaining and runs required a neck and neck affair, none gaining on the other, all the indications pointing to a near dead heat as the finish line approached.

India had rejoiced. Jacques Kallis, his mastery providing the plinth on which the South African innings was built, had just been sent back by a Venkatesh Prasad throw from the deep.  The match had been poised on the edge of a knife,  with 27 required off 26 balls.  Traditional tight limited- overs fare.

And then Klusener had walked in, taken guard and bludgeoned the first three balls he faced for boundaries. It had been unfair. Two teams had contested on level playing field and suddenly a man had entered busy batting in another dimension.  The wire had not even been in sight when the game had ended, the Proteas had won with as many as 16 balls to spare.

The City of Princes

It was Hove, the home of willow wielding Indian princes who had turned out for Sussex. There had been the genius of Ranji , the elegance of Duleep and the ephemeral promise of Pataudi. As the memories lingered and expats flocked  in on the Saturday, the modern heroes did not put on a bad show.

Sourav Ganguly, on his 100th appearance for the country, stroked the ball fluently, drives flowing like fizz amidst the festivity. And once he took time off from the crisp off side strokes to dance down the wicket and clobber Nicky Boje out of the ground.

Sachin Tendulkar did not make many, but his five boundaries delighted onlookers. Rahul Dravid added 130 with Ganguly, reviving memories of the day at Lord’s just three summers ago when the two had made their smmultaneous Test debuts with strokes echoing around the world.

India perhaps should have got more, but Allan Donald was excellent with his line and aggressive with his speed. Ganguly turned nervous and sluggish as he approached his hundred and took on the arm of Johnty Rhodes to be run out five short of the landmark. And the rest of the batting did not really distinguish themselves in the slog overs.  The score read 253 in 50 overs, but in 1999 that was not a bad total on the board.

Remote control captaincy

The drama during the innings was played out beyond the 22 yards as well. The South African coach Bob Woolmer, that advocate of scientific innovation in the game, was experimenting with technology. Captain Hansie Cronje and ace bowler Donald both wore ear pieces, and Woolmer was busy communicating with them as they took the field.

In the box meant for officials, match referee Talat Ali was far from amused. When the drinks were brought out, Ali came out fuming and confronted the coach. The experiment had been a partial success, but now Ali clamped down on it. Later ICC ruled against such advice dispensing  devices for the rest of the tournament.

Classic Kallis

As South Africa started their response, a charged up Javagal Srinath ran in to send down a furiously fast first spell. The speed gun surprised one and all. The Indian speedster was bowling as fast as Donald. And he fired out the openers as well.

Herschelle Gibbs was struck on the pads, on the knee  roll with the ball swinging a long way. There were enough doubt, but one had to budget for Steve Bucknor. A long wait was followed by the raise of the finger.  The other opener, Gary Kirsten, tried to send an express delivery through the covers and was bowled off  the inside edge.

It was 22 for two, and another wicket could  have increased the pressure exponentially. Indeed, with the South African think-tank using Mark Boucher as a pinch- hitter, such an eventuality was definitely on the cards. But on this day the move came off. Srinath started straying in line, more in length, and Boucher pulled him for two boundaries before sending one spiralling over the wicket-keeper’s head for six. Anil Kumble bowled him with a googly,  but the quickfire 34 had got the Proteas moving.

And at the other end, Kallis had settled down. Two drives, played square of the wicket with minimum effort, spoke of genuine class. Darryl Cullinan slogged against his phobia of leg-spin and got four off Kumble. A couple of drives flowed off the medium pacers. South Africa were past 100, the partnership looking just a tad threatening.

Skipper Mohammad Azharuddin chucked the ball to Ganguly. Cullinan tried to lift him towards the vast open spaces of the on side. The leading edge took it to point. The man from Kolkata was ecstatic. It was 116 for four. India had the advantage.

But, they needed another wicket. And they had run out of quality bowling. Robin Singh, Ganguly and Tendulkar tred their best but were not really ideal men to create pressure and opportunities. Srinath ran in for another spell and sprayed it far too short or way too down the leg. Kallis helped himself to calm boundaries. Cronje played a brisk little cameo. The balls remaining never quite lagged behind the runs required.

Ajit Agarkar, less than impressive through most of his spell, sent down a short delivery. Cronje pulled it in the air and Ajay Jadeja plucked out an athletic catch at mid-wicket. The equation read 74 off 68 when Rhodes entered. And immediately he started pushing the ball into the gaps and haring down the wicket.

Kallis and Rhodes pushed the score along. Singles were there for the taking, many converted into twos, and there were enough boundary balls in between. The stand amounted to 47, off just 42 balls. And then Kallis slashed Srinath to third man. Rhodes scampered up and down, and sprinted up again. Kallis, uncertain, hesitating, hovered midway between yes and no, and Prasad’s throw to the bowler’s end caught him well short. 27 required off 26 balls.  And  we already know what happened next.

The tornado

Rhodes took a single, Srinath ran in again, and Klusener bludgeoned him for four.

22 remained to be scored off 24 balls. Agarkar had the ball. And the match virtually ended in the course of that over. Rhodes cracked him for four, and repeated the stroke. A single came next. Klusener squared up. Agarkar ran in. Whack. Four. Whack. Four. It was merciless. The strokes were too powerful. The boundaries too short. The fielders too few. The over cost 17.

And then just to end it quickly, Rhodes lofted Prasad over mid on for another boundary. 27 had been required off 26 balls when the two had come together. They had got them in 10. The Indians, spirited and determined till the 45th over, suddenly looked as if hit by a tornado.

The Aftershock

They were jogging off the field, morose and disappointed, when the traditional Indian fan appeared. Big,  boorish, inebriated, without whatever rudimentary sense he might have possessed when sober. He was obviously feeling let down by the team, who had not managed to win it for him while he had guzzled his beer.

He snatched at Azharuddin’s shirt, and the captain shook him off. And then his eyes fell on Dravid. His lumbering hulking form made towards the Indian batsman and rammed into him. Dravid was shoved off his course.

Unfortunately for this splendid specimen of Indian cricket fandom, the man immediately behind Dravid was Prasad — tall, well-built, and with the mindset of a fast bowler. Prasad’s eyes grew fierce. He glowered at the guy, charged at him, and did unto him as the oaf had done unto his teammate. The brute tottered, toppled and fell in the arms of pursuing policemen.

The well-fought match had to wind up with this bitter after-taste. But that has so often been the story of Indian cricket.

Brief Scores:

India 253 for 5  in 50 overs (Sourav Ganguly 97, Rahul Dravid 54; Lance Klusener 3 for 66) lost to South Africa 254 for 6 in 47.2 overs (Mark Boucher 34, Jacques Kallis 96, Johnty Rhodes 39) by 4 wickets with 16 balls to spare.

Man of the Match: Jacques Kallis.

Source - http://www.cricketcountry.com/articles/icc-world-cup-1999-south-africa-coast-to-win-over-india-and-there-is-tumult-in-ear-piece-254169

Do Two Way Radios Work on Cruise Ships?

Yes, two way radios DO work on cruise ships. However, because the same channels tend to be a bit overused, passengers can expect a fair amount of chatter and signal interference when using their radios.

I suppose the two way radios/walkie talkies would be the best option. But, how important is being in constant communication with the rest of your family anyway? A ship, while large, isn’t huge. If you know the general area where people will be, you could walk over and find them. Preset arranged meeting times and places would work as well. People were able to get along fairly well without being able to directly communicate with each other at every moment of the day

So, aside from the option of setting pre-arranged meeting times, a two way radio isn’t a terrible idea, especially if you have kids. Many people reading this might simply ask why they can’t use their mobile phones. That is a very good question, after all…

If you’re going on a cruise this summer (or anytime, really), you need to be aware that your mobile phone is going to cause some problems.

Many cruise passengers are unaware and/or totally ill prepared for this fact and the cruise companies themselves are at least partly to blame for the lack of information in this area. So, will your mobile phone work at sea?

The answer is most often always “You can subscribe to our cruise line cell phone network.” What they won’t tell you is the rates you will be paying. You certainly won’t be able to find them online, and to get a proper answer, you’ll have to call the cruise line to get a full break down of what they charge for access to their cell networks. As a company that sets their own international calling rates for the Talk Abroad SIM Card, we can see the cruise ship networks in our list, and it does not look good. If you subscribe to their network, you’ll be paying anything from $4 ~ $8 per minute, depending on your location and who you are calling. Don’t forget also that they’ll be charging you for receiving inbound calls

As we’ll soon see, taking a mobile phone on a cruise can represent a logistical nightmare. At the same time, however, many of us feel naked without a phone?

More problems are presented in the form of scheduled stops (although these can also represent opportunities for a higher – and cheaper – level of connectivity).

If the ship is close to the coastline, and has multiple port of call stops, you’ll typically be able to get a terrestrial signal from the nearest land cell phone tower – up to a mile from the coast. It’s highly unlikely that you will be connected with 3G speed signals, as evidenced in my previous blog, you will need to have a low-wave 3G frequency like 800 or 900 Mhz – frequencies not typically associated with phones manufactured for North American consumers. So what can be done? You can rent an international cell phone that works in port, and a short way out to sea. If you really must stay connected on your boat, get in touch with your cruise travel agency and request information about the on-board cell phone rates and subscription fees

So, using mobile phones on a cruise is both difficult and supremely costly, but arranging a meeting time is also likely to cause more than a few headaches. two way radios have their problems, but may in fact be the best way to keep in contact, depending, of course, on how important a factor this is for you.

The size of modern cruise ships are such that they are usually measured against small cities, this means that communications are even more important than before. Experts in 2 way radio communication are 2wayradionline.co.uk