Have You Ever Thought How Do 2 way radios work?

To put it simply, a two-way radio is a device that can both receive and transmit voice messages. In broader terms, it can be said that most wireless communication, and it may include cellular systems, fall under the definition. However, these days, two-way radio is a term to describe radio system for group call communication. The two-way radio comes in several technical names such as Public Access Mobile Radio, Private Mobile Radio, Land Mobile Radio and Professional Mobile Radio. These present times, two-way radios are often called “walkie talkies”. There are several kinds of two-way radio systems and some are able to make use of base and mobile configuration, while some re able to utilize a radio network infrastructure.

A typical two-way radio includes a PTT button, also known as Push-To-Talk button. The button activates the transmitter and the user simply needs to talk to the device to start communicating. The user must release the PTT button in order to receive transmissions from the other line.

A two-way radio is able to communicate with other radio devices. However, direct radio communication has very limited range. To overcome the problem, a radio network infrastructure may be used to extend the range of communications. The rest of the article is going to cover more details about how 2 way radios work and other useful information.

Receiving Radio Waves

Just like other forms of Wireless communications, a two-way radio sends messages over the air. In order to achieve this, the antenna of a way radio contains a specific set of electrons. If the two-way radio features multiple channels, then there is specific sets of electrons are each channel. Whenever a radio transmission is received by the two-way radio, the electrons get excited. The electrons then create electrical impulses. Electrical impulses are then sent to a small processor, which will then convert the electrical impulses to words and sounds that can be understood by humans. The sounds are produced by the speakers within that two way radio.

Keep in mind that there are always radio waves are floating in the air. Because of it, there is always a nondescript sound that may be produced by the two-way radios. To solve the issue, a lot of two-way radios feature a “squelch” setting; and with it, the user can adjust the signal threshold for clearer communications.

Sending Transmissions

Two-way radios can also send messages across the air. The main idea is to convert the sound to radio waves. However, the defining characteristic about the way radio is its ability the convert back the radio waves back to legible sounds.

Whenever a user speaks into a two-way radio, a membrane within the device will vibrate as a response to the sounds. The vibrations are sent to the processor, which in turn converts them to electrical impulses and readies it for transmission.. Finally, the transmission is sent to the antenna which is then broadcasted in the form of radio waves. These radio waves are then received by another device and convert them back to a legible sound.

Multiple Channels

As two-way radios are getting more and more popular, it is possible for more than one party communicating in the same line or frequency. This can cause a lot of confusion and interference. To solve the problem, modern two-way radios are able to utilize multiple channels.

For a two-way radio to broadcast on multiple channels, the device must be able to generate radio waves in multiple frequencies. Furthermore, the device must be able to send frequencies with very little fluctuations. These fluctuations are actually caused by the transmitted voices. The fluctuations can be minimized through “frequency modulation”. The modulated transmissions are then sent to the device’s antenna.

The device must also excite the proper electrons. Once the proper electrons are excited, an outgoing radio wave is then produced.

These radio waves may be picked up by another device tuning into the same frequency. Furthermore, the device must be within range of the transmitting device. The range of two-way radio is usually determined by a couple of factors such as atmospheric conditions, radio’s battery power and the size of the two-radio’s antenna.

Whenever a device picks up the transmission, the receiving radio must filter the signals through an electronic filter known as a bandpass filter. Finally, the transmission is then converted back to sound.

Why Choose A Two Way Radio

The two-way radio is one of the earliest forms of wireless communication. However, in today’s modernized communication environment, a question arises – is the way radio a viable technology? The answer to that question is a yes. This is because the two-way radio has its own unique advantages that may not be found in other forms of wireless communications. Below are two of them:

Instant Communication – the ability tocommunicate between two or more parties almost instantly is one of the most defining advantages of the two-way radio. A user only needs to press the “Push-To-Talk” button and within seconds a receiver will be able to receive the audio messages. Furthermore, the entire system is set up around the idea of “quick call” and “quick receive”. This is the main reason why the organizations rely on the two-way radio technology for operational and tactical communications. The system can also make use of encryption technology for a more secure communication.

Group Communications

Another unique advantage of two-way radio is its ability to facilitate “group call” or “one-to-many” communications very efficiently. By efficient, it means that the user can communicate with one, hundreds or thousands at the same time. There is no need for a user to repeat the same message if he/she needs to communicate to more than one individual.

A two-way radio is one of the earliest technologies used for wireless communications. Even though it is a bit outdated compared to other forms of wireless communications, but the usefulness is still very applicable today. The main idea of how 2 way radios work revolves around on sending and receiving radio waves, which in turn is converted to legible sounds. The idea and technology behind two-way radio may be simple, but nevertheless it is still a very well-used form of communication in today’s world.

Have You Tried the Kenwood Radio Earpiece?

You might have heard about the Kenwood radio which is the second most popular gadget in the world. As we watch communication systems surrendering to technology’s prodigies, businesses around the world expand. Various sectors of profession that rely on radio technology can actively communicate without facing any hassles. Kenwood is a renowned brand for producing reliable communication equipments. The Kenwood radio earpiece is no exception, being an ideal preference for this particular audio device. The fundamental kinds of ear pieces used for this kind of radio are the 2 pin and multi-pin connectors. Offering exceptional performance within a reliable framework, customers have shifted to using such models for increased audibility.

Key Features of Kenwood Radio Earpiece

The earpiece offers a clear and discrete source that makes communication easier. Composed of high impact polycarbonate plastic, the earpiece allows individuals to communicate in the noisiest environments. Kenwood radio earpieces therefore are considered to be the best choice that is compatible with the radio device. It is the perfect choice of equipment used for communication by security experts, door staff, and surveillance teams. The 2-pin model features two connector pins whereas the multi-pin model features various connectors. A good example of the multi-pin model is the Kenwood 3 wire earpiece that features has been fabricated into a three wire system design.

kenwood earpiece

The Kenwood earpiece comprises of a ‘push to talk‘ or PTT button which is basically the controller of the device. It allows individuals to rapidly get in touch with clients, associates or team members to discuss and carry out various tasks. The coordination of two way radios with the right earpiece ensures excellent sound quality. One of the key features of the 2 wire earpiece is that it can be attached to a collar, lapel or a tie and slipped inside the clothing easily. The Kenwood 3 wire earpiece is slightly different since it is held in the hand to regulate operation instead of being mounted on the lapel or collar. The PTT allows the recipient to switch on or off the earpiece to relay information across.

Benefits of Buying Kenwood Earpiece

Coordinate the responses of your team at office using the Kenwood earpiece device that has been introduced by a reputable company which has existed since 1946. Attaining years of trust from clients, everyone knows how beneficial the Kenwood radio earpiece is! The ear bud has been fabricated with the idea of giving comfort to the listeners with a fitting frame. The cable of the earpiece is transparent, lightweight and durable with hardwearing. The sound quality is excellent of the earpiece that comes alongside a built-in microphone. Aligned with a clothing clip both the devices feature a surveillance tube and the PTT button.

You can easily replace the plastic clothing clip with a steel clip and add features like swivel ear loop. This is done so as to improve flexibility of usage and comfort. Irrespective of how the environment is, the earpiece has a noise cancelling feature that makes it efficient to use in social events at nightclubs, factor or a public event. It is the choice made by professionals since the device is highly compatible with Kenwood 2 way radios. Imagine days when your communication systems are on a shutdown with extreme interference in sound waves! If you fancy a noise free, discrete and clear sound quality then Kenwood radio earpieces is the ideal pick.

A Kenwood radio customer will never face the problem of compatibility or affordability. Having distinct features makes the earpiece an accommodating communication tool. There are lower priced devices available however lack the durability of Kenwood. The Kenwood earpiece is composed of robust framework that can withstand collision. In fact the earpiece is resistant to high strain making it a long lasting device. The earpiece has been recognized globally to being an apt choice for enhancing sound quality of Kenwood radios. You should ensure that while you’re out buying earpiece for yourself, the kind of radio you have matters a lot. So choose wisely before making a final decision.

Conclusion

Kenwood radio earpiece is a result of proficient technology that assists receiving, sending and regulating information between recipients. It is vital to use competent communication tools to achieve quality proof sound. Kenwood is an economical brand that triggers consistent performance over time. This lightweight device couples with a resilient covering that secures prolonged connectivity. Enjoy the comfort of uninterrupted conversations with Kenwood’s brilliant earpiece technology today.

My Other Computer’s a TARDIS: Virtual Reality Makes Time Travel Possible

A new virtual form of ‘time travel’ could be employed to help victims of traumatic experiences overcome their ordeals.

In a computer generated ‘virtual world’, participants can move about and interact with their environment in a similar manner to how they would in the real world.

Professor Mars are unassailably cool, told BBC news that,

“In virtual reality, the brain’s low level perceptual system does not distinguish between the virtual and the real world; the brain takes what it sees and hears in a surrounding environment as given (…) Therefore, if they had an experience with the illusion of time travel, there is implicit learning that the past is mutable, that is: ‘my own past decisions don’t matter because they’re changeable’.”

The latest study, published in the journal ‘Frontiers in Psychology’ featured a scenario wherein 32 test subjects witnessed a brutal multiple murder. In the virtual scenario, (presumably designed to induce both a moral dilemma and a controllable level of trauma) a man opened fire in a crowded art gallery and ‘killed’ five people.

Gunman starts shooting in the virtual world

The group then elected to ‘go back in time’ and attempt to prevent the murders.

Half of the group were not allowed to change their actions and simply had to repeat the event, the other half were allowed to intervene, but knew that doing so would result in the death of one person. Essentially, these people had to face the ethical dilemma of forfeiting the life of that one person in order to save five people.

Unsurprisingly, most of the test group chose to sacrifice the one life.

In terms of practical applications, this equipment is expected to allow people suffering with PTSD (Post Traumatic Stress Disorder) and other psychological issues to confront their previous actions/inactions and better understand them in order to forgive themselves and move on.

Such technology might also be applied to prisoners undergoing therapy and/or rehabilitation, or even survivors of violent assaults.

Dr. Friedman Doron of the Sammy Ofer School of Communications in Israel, who worked as the study’s lead author, said that, for now, his team’s work is the closest people can get to actual time travel. He told BBC news,

“Highly immersive virtual reality is very visceral. People hide behind the desk when they get shot. Some of the subjects duck down. It’s the best thing we can do for time travel until the physicists do their job and come up with a time machine. For now this is the closest thing.”

The Doctor Who Earpiece Experiment

The short answer is ‘no’. Apple Earpods debuted in 2012, a full six years after the ‘Doctor Who’ episode ‘Rise of the Cybermen’ first aired.

Within the context of the series, the Earpod devices were designed as a metaphor for society’s perceived over-reliance on portable technology in the 21st century. The name ‘Earpod’ was a play on words, meant to superficially sound like the word ‘iPod’.

In addition, the fictional earpieces were mainly utilized as a way to re-package classic Doctor Who antagonists the Cybermen for a new audience (who may have been unfamiliar with them following the gap between the show’s cancellation in 1989 and its subsequent reintroduction in 2005). Variations on the Earpod device are also utilized in later episodes from the same series (in particular, ‘Army of Ghosts’).

Whilst it is something of a stretch to imagine that nobody at Apple has ever watched ‘Doctor Who’, the use of the name did not seem to affect the American computer firm’s decision to create and market their own brand of ‘Earpod’, in 2012.

doctor who earpiece

In terms of legality, it seems reasonable to assume that ‘Doctor Who’ created the brand name for satiric purposes, rather than to create an entirely fictional brand/product (such as The Simpson’s ‘Duff Beer’).

Had Apple simply adopted a product name already owned by the BBC, there may have been a legal scuffle between the two corporations, but since BBC’s product was obviously intended as a wry commentary or, at most, a satirical send-up of existing technology (in particular technology made and marketed by Apple), then it is highly doubtful that there was any friction at all.

Apple’s Earpods (which, as far as we know, have never caused anybody to be turned into a cybernetic creature hell-bent on universal obliteration) are available at a fairly affordable price (the Apple site lists them at £25.00 before P&P), but do not have a reputation for being one of the company’s better products. In a particularly scathing review, TechRadar wrote that,

“The tinkle at the high-end is certainly better than before, and there’s improved bass as well. So they’re more than good enough if sound quality is not something you are bothered about. If you’re going to be buying an iPhone 5 or one of the new iPods, you’ll be getting some marginally better earphones than you might have expected, so that’s a good thing. But for anyone thinking of buying these things separately for £25/$30 – forget it. That price is utterly ludicrous. For that money you could bag yourself a decent pair of Sennheisers – low end ones admittedly – but they would still be head and shoulders better than the Apple EarPods. In fact, we challenge you to find a pair of £25 earphones on Amazon that sound worse than this – you won’t be able to”.

All things considered, the Earpod is a pretty basic variation on the standard Apple headphones. It is not even marginally related to the mind-controlling earpieces utilized by the Cybermen. At least, as far as we know…

What is a Communications Engineering

Communications engineering is a disparate array of technological disciplines brought together under one all-encompassing banner. The disciplines considered to be part of a communication engineer’s skill set include telecommunications, mobile phone networks and Internet maintenance (but are by no means limited to those examples).

As we wrote earlier this month, any technology that aids in communication, from a walkie-talkie to a Skype account, is technically a communication technology; therefore, it also follows that anybody who works in these different areas can call him/herself a ‘communications engineer’.

The theory behind this move is that communications technology is becoming more streamlined and, to some extent, more homogenized (think of the ubiquity of mobile phones and social media) and so, it makes sense to bring communications technology together as a single subject as well.

As I type this, it is actually possible to get a Degree in Communications Engineering (as a single subject) from many universities worldwide. However, communications engineers frequently hold other Degrees such as electrical engineering, physics, telecommunications and/or computer science.

The sort of students that apply for courses like this (and subsequently work in the related areas) are generally logistically minded, tech-savvy people who are comfortable learning new skills and adapt quickly to new technology. Certainly, the money can be good for a decent engineer with a good reputation and an up-to-date skill set. Industries that rely on the expedient exchange of information (news networks, the stock exchange, big businesses and etc) should be the goal for the ambitious communications engineer (as well as the eager graduate).

Communications engineering is a vast and somewhat esoteric subject, because it combines so many different disciplines. Ideally, good communications engineers would be just as able to handle microwave engineering as they would a downed computer network, so it takes a smart cookie to be really good at the job.

Communications engineers are often quite business savvy as well. A big part of the job is dealing with clients or management, making presentations and working effectively as part of a team. Experience of modern business practice is not essential, but from the looks of things, it certainly helps.

The vast majority of communications engineers work for specific telecommunications companies and/or manufacturers, although some are self-employed as consultants or on fixed contracts.

According to Targetjobs.co.uk, typical job responsibilities for a communications engineer include: undertaking site surveys, agreeing to and staying within a client budget, staying up-to-date with technological information, problem solving (obviously!), creating test procedures, creating ‘worst case scenario’ plans for companies to follow and presenting companies/clients with the best way to manage their communication systems.

What is a Communications Engineering

Communications engineering is a disparate array of technological disciplines brought together under one all-encompassing banner. The disciplines considered to be part of a communication engineer’s skill set include telecommunications, mobile phone networks and Internet maintenance (but are by no means limited to those examples).

As we wrote earlier this month, any technology that aids in communication, from a walkie-talkie to a Skype account, is technically a communication technology; therefore, it also follows that anybody who works in these different areas can call him/herself a ‘communications engineer’.

The theory behind this move is that communications technology is becoming more streamlined and, to some extent, more homogenized (think of the ubiquity of mobile phones and social media) and so, it makes sense to bring communications technology together as a single subject as well.

As I type this, it is actually possible to get a Degree in Communications Engineering (as a single subject) from many universities worldwide. However, communications engineers frequently hold other Degrees such as electrical engineering, physics, telecommunications and/or computer science.

The sort of students that apply for courses like this (and subsequently work in the related areas) are generally logistically minded, tech-savvy people who are comfortable learning new skills and adapt quickly to new technology. Certainly, the money can be good for a decent engineer with a good reputation and an up-to-date skill set. Industries that rely on the expedient exchange of information (news networks, the stock exchange, big businesses and etc) should be the goal for the ambitious communications engineer (as well as the eager graduate).

Communications engineering is a vast and somewhat esoteric subject, because it combines so many different disciplines. Ideally, good communications engineers would be just as able to handle microwave engineering as they would a downed computer network, so it takes a smart cookie to be really good at the job.

Communications engineers are often quite business savvy as well. A big part of the job is dealing with clients or management, making presentations and working effectively as part of a team. Experience of modern business practice is not essential, but from the looks of things, it certainly helps.

The vast majority of communications engineers work for specific telecommunications companies and/or manufacturers, although some are self-employed as consultants or on fixed contracts.

According to Targetjobs.co.uk, typical job responsibilities for a communications engineer include: undertaking site surveys, agreeing to and staying within a client budget, staying up-to-date with technological information, problem solving (obviously!), creating test procedures, creating ‘worst case scenario’ plans for companies to follow and presenting companies/clients with the best way to manage their communication systems.

What Does Two Way Radio Mean?

A two way radio is one that can transmit and receive. It is also called a transceiver. The two way radio definition encompasses most of the wireless or cellular systems. Portable devices which use the two way radio system are called walkie talkies or handie-talkies. The transmitter on a two way radio device is turned on by pressing a push-to-talk button. Pushing this button sets you free to start talking through the device. There is normally another person on the other end of the conversation, or a group of people who have devices which use the two way radio system.

The 2 way radio technology is one of the earliest wireless network technologies. Despite the fact that there are countless other ways of wireless communication due to innovation, the two way radio system is still viable and used by people to widen their communication range.

It is mainly used due to the following two main advantaged:

Communication is Instant

The two way radio system enables instant communication. Within a fraction of a second after pushing the push-to-talk button, you would be able to pass on your messages . This has been made possible by a quick call set-up time integrated in this technology. The reliance of organizations on the two way radio system is founded on the fact that the device enables instant communication.

Group Communication is Possible With This Technology

This is a distinct feature of the two way radio technology. The capability of this system to create a scenario where a whole group communicates even from distances apart is also called “group call”. It is very efficient in that one caller is able to convey a message to up to thousands of other users at the same time. Not one user receives his/ her message later than the others in a group call. The conveyor of the message does not need to repeat himself/ herself so that the message is heard by everyone in the group communicating. Very little radio frequency channel resources are used during the group communication, meaning that it is not a way that utilizes so much of an organization’s resources.

Benefits of a Two Way Radio System of Communication

All wireless technology systems of communication have their advantages and disadvantages. Organizations or groups have their preferences in regards to how they conduct their day-to-day businesses.

A two way radio system of communication is superior to other systems of wireless communication due to the following key reasons:

o It is suitable for people who are mobile hence are rarely together to carry out their duties and responsibilities close to each other.

o It is suitable for communicating among a group of people.

o Communication using the two way radio system is instant.

The aspect of a two way radio system of instant communication enables emergencies to be handled pretty fast. A situation that requires urgent attention can be attended to as fast as possible. A cellular phone would be a great option for communication of emergencies, just that, they take time as the person on the other end of the call has got to receive first so that the message is conveyed. The few seconds or possibly even a minute as the phone rings could create an avenue for the situation to worsen. A two way radio system only requires you to push a button and then convey the message straight-up, as long as the radio frequency channels are available. In the event of congestion on the radio frequency channels, the two way radio system is designed to overcome this and create a priority in the event of an emergency. This feature is not available to other technologies of the wireless system.

Conclusion

The two way radio system is very efficient and economical. Making phonecalls to more than 5 members of a particular group would be pretty expensive as compared to conveying messages through a two way radio system. It would also take time to call one member after the other, a situation that would not arise with the two way radio technology.

EarpieceOnline answers: What Is a Covert Earpiece

A covert earpiece is a very small listening device that is often worn by someone who wishes to be able to wear an earpiece and not have it be visible. The advantage of such an earpiece is that the wearer is able to use it as a radio accessory and yet not have others be aware that they are using an earpiece to communicate with others. A covert earpiece is often referred to as either a surveillance earpiece or invisible earpiece and it is quite common for the likes of law enforcement officers on undercover assignments, security personnel, government agents, and also spies, both corporate and government to wear such a device while undertaking tasks that require privacy and secrecy.

While radio headsets are quite commonly used by people in many occupations to communicate with one another, the covert style of earpiece is usually reserved for occasions and circumstances that require sensitivity and privacy when communicating. Those personnel conducting surveillance and / or working in private security would most likely opt for this form of earpiece over a more visible style, allowing communication to occur without alerting others close by. There are many other examples where an invisible earpiece could be worn: attempting to cheat on an exam where the wearer would have someone else ‘feeding’ them the correct answers to the questions, or when trying to cheat a casino by having an unfair advantage over other players. In this last instance, such as at a poker table, the cheating player may have someone stand in an advantageous position on the opposite side of the table and provide information regarding the cards of the other players.

One industry in which the use of covert earpieces is quite common practice is on-air television. Newscasters, sportscasters, talk show hosts and even the weather presenter may all wear an invisible earpiece when live on air, allowing them to receive critical information or instruction without the viewers being aware. Engineers and producers have the ability to communicate with the on-air personalities while airing live and direct them as needed, to ensure that everything proceeds without a hitch. This is particularly helpful with live television where a re-take is not an option, or when a story may break during a news bulletin and the information can be fed immediately to the newscaster, who in turn will advise viewers of the late-breaking news. 

A covert earpiece can be beneficial for anyone making a public speech. The speaker can be directed by someone behind the scenes and even given cues to help them remember what to say next, all the while leaving the audience without any awareness of it happening. This is a common practice and can save a speaker from the embarrassing situation of a temporary loss of train of thought. A quick reminder via the earpiece and the speech can continue with any evidence of a slip. Prominent people such as politicians who are often subject to criticism of their public-speaking abilities can find being assisted via a covert earpiece ensures they do not make a newsworthy ‘blunder’.

There are covert earpieces that are designed for the wearer to receive communication only and then there are others that are designed with a microphone in them, allowing two-way communication. Those personnel responsible for ensuring security and / or conducting surveillance can discreetly communicate with each other, an essential asset for these types of tasks. The convenience of having a hands-free means of communicating is also advantageous, particularly when security personnel are blending in with the crowd and do not want anyone alerted to their presence.

A covert earpiece fits discreetly into the ear or sometimes on a pair of eyeglasses and has no visible wiring, and yet the wearer is able to hear clearly and distinctly everything being communicated to him or her. As the name suggests, it is designed to be invisible’ to anyone but the most observant person. While not completely invisible, most people are quite unaware that a person is wearing a covert earpiece. In some instances there may be a wire that is covered by a person’s collar. This is called an inductive wire and although its purpose is to be a sound modulator it is in fact a separate radio device and is not connected to the earpiece.

Some Stuff About The IC-F27SR

Again a different article i found remarkable on the topic of Walkie talkie’s, what would you do if i didn’t post this ehh? you would have to look at the original content, and the chances that you found it could be slim, so deem yourself fortunate that i have shared this glorious short article with you.

Professional PMR446 Licence Free Two Way Radio

The IC-F27SR professional Licence Free Two Way Radio is the successor to the best selling IC-F25SR and retains the simplicity, functionality and build that made the original so popular. However, there have been some big improvements including a smaller and lighter body, 800mW loud and intelligible audio, built-in VOX function and several new scanning and security features. To top it off, the IC-F27SR includes highly efficient circuitry that provides up to a massive 35.5 hours of operating time with the supplied BP-265 2000mAh Lithium-Ion battery pack.

High performance, Professional Licence Free Radio 
Outstanding audio quality, high performance and strong commercial build make the IC-F27SR the ideal licence free radio. This licence free radio is ideal for users in diverse areas such as construction, catering, event management, shopping centres, factories, farms as well as serious outdoor enthusiasts.

Up to 35.5 hours of operating time
The IC-F27SR features highly efficient circuitry, providing up to a massive 35.5 hours of operating time* with the supplied BP-265 2000mAh lithium-ion battery pack. This means it can be comfortably last an entire shift.
* Tx: Rx: Stand-by =5: 5: 90 with power save ON. 24.8 hours with BP-264

Outstanding audio quality 
800mW audio output is provided from the large 45mm speaker meaning the IC-F27SR can deliver loud and intelligible audio even in extremely noisy environments such as a busy shop floor or construction site.

Just three main controls
Transmit button, volume control and channel selector. This simple to use radio is ideal for high turnover environments and shift work where the radio is constantly passed from person to person.

Lightweight, Compact Body
Small size (58×186×36.5mm) and lightweight (285g) makes this transceiver ideal for all users.

Commercial grade construction
The IC-F27SR is extremely rugged. It has been tested to 11 categories of environmental and military standards for dust protection and water resistance making it suited to outdoor use.

Internal VOX for Hands-free operation
Built-in VOX function provides convenient hands-free operation, when used with our optional headset adapter cable.

500mW output power 
Provides wider communication coverage.

Other features 
• CTCSS and DTCS encoder and decoder for group call
• Surveillance function turns off the LED and beep sound
• Siren function can be used for security alarm
• Power save function
• Low battery alert
• Time out timer
• Monitor function

  • High performance, Professional Licence Free Radio
  • Up to 35.5 hours of operating time with BP-265 Li-ion battery pack *Typical operation with power save on. TX:RX:Stand-by=5:5:90
  • Outstanding audio quality
  • Simple to operate, just three main controls
  • Lightweight, compact body
  • Internal VOX for hands-free operation (Optional headset and adapter cable required)
  • IP54 and MIL-STD-810 ruggedness
  • CTCSS and DTCS tone squelch for group call
  • Same accessories as “F3002/F4002” series handhelds
  • 2 year warranty on transceiver, 1 year warranty on accessories

MH370: Motorola cargo comprised walkie-talkies, besides batteries and chargers

what would you say if this website About keyword was the best one we found this week, would you believe us?

A two-tonne consignment aboard the ill-fated  MH370 flight is believed to comprise walkie-talkies, lithium ion batteries and their chargers.

The cargo manifest released in the preliminary report of the incident shows that the plane was carrying 200kg of the batteries while the balance is said to be “radio accessories and chargers”.

The revelation by Malaysia Airlines confirms a report by fz.com on March 25 that revealed that the shipper of the lithium ion batteries, walkie-talkies and chargers was Motorola.

Quoting a source at that time, fz.com reported that the goods were shipped from the factory’s facility in Penang.

The goods were sent by lorries to the KL International Airport, and based on the master air waybill, the items were sent from Penang on March 6.

Of the 2.4 tonnes that was shipped from the plant in Penang, only about 200kg comprised the batteries.

Though the cargo manifest and master air waybill indicated lithium ion batteries, it did not reveal that walkie-talkies made up the rest of the consignment.

MAS later said in a statement that they were “radio accessories and chargers”.

The air waybill prepared by NNR Global Logistics Sdn Bhd on behalf of its client, Motorola, showed that two loads were packed, one being 1,990kg for 133 pieces and another being 463kg for 67 pieces.

The batteries and accompanying goods were later shipped by NNR Global Logistics, while the balance divided into “13 packages”, were forwarded by Kerry Logistics (Malaysia) Sdn Bhd.

The cargo manifest showed the plane carried 9,947kg in three large shipments.

While mangosteens from Muar, Johor weighed the heaviest at 4,566kg and the 2,453kg worth of lithium ion batteries and accompanying goods (written up only as “consolidated”) are more or less accounted for, the other 2,250kg of “consolidated” items have sparked interest.

A source familiar with aviation forwarding industry practices said the mystery surrounding the cargo manifest and the exact loads that went onto the ill-fated MH370 can only be resolved if MAS revealed the house air waybills.

The source added that without the house air waybill and the packing list, the cargo manifest and the master air waybill were redundant because only those two documents would properly state the goods and the shipper.

“It is understandable that MAS cannot reveal the other two documents simply because they may not have it.

 “As for the house air waybill and packing list, the Customs Department, the freight forwarder and the shipper should come forward and reveal them,” he said.

Days after the Beijing-bound flight went missing along with 239 passengers and the crew on March 8, Malaysia Airlines chief executive officer Ahmad Jauhari Yahya said the plane was carrying 200kg of “small” lithium ion batteries.

He said the load was not considered hazardous as it was packaged in accordance to safety regulations.

In response, the aviation source said though the shipment contained batteries and declared as dangerous goods, they are within specified permissible levels.

“The dangerous threshold for lithium ion batteries is not measured by its weight but its watt per hour measurement. For instance, a handphone probably would measure 100 grams watt per hour which is not lethal.

“The watt per hour measurement indicates the battery activity by the hour,” he had said while cautioning that forwarding companies and shippers often failed to declare “hidden dangerous goods” in the shipment.

These include flammable liquids, lubricants, corrosive and oxidising materials that could and have resulted in fires onboard flights, he said.

Read more: http://www.fz.com/content/mh370-motorola-cargo-comprised-walkie-talkies-besides-batteries-and-chargers#ixzz31gub3d3V

How To Wear a Security Earpiece

Radio earpieces look really cool. They are generally used for surveillance but some enthusiasts also wear them just for fun. Secret agents and spies in the movies have made these accessories really cool to wear.

Putting on a radio earpiece is not a tough job. To put on an earpiece, first of all you need to take that earpiece and microphone clip in your hand. The microphone is to be put where you are most comfortable with it. It can be put on your hands, specifically on your wrist. You must have seen Spies or Secret Service agents in movies lifting their wrists talk. This is where they are speaking into the mouthpiece on their wrists.

If you’re not comfortable with the mouthpiece on the wrist, you can also put it on the tie or on the shirt, on your chest. Once you have clipped on the mouthpiece, it is time to put on the radio. Take the wire dangling from the mouthpiece and put it inside your shirt. Take this wire out from the top of the shirt. This way the dangling wires will be completely hidden. Take the earpiece and put it on your ears. Make sure, that it fits tightly and would not fall off when you start to walk. You can put it on either ear. If you are wearing the mouthpiece on the wrist, you will find it comfortable to put the earpiece on the same side ear.

Once you are comfortable with the mouthpiece and the earpiece, it is the turn of the end which goes into the radio. Take this dangling wire connecting that end with earpiece and mouthpiece and put it inside your shirt. Take out the wire from the bottom of the shirt. Put it in the radio and clip the radio in its place on your pants. Once you have that these wires inside your shirt completely, you need to tuck in your shirt inside your pants so that none of the wires are visible.

Once everything is fixed, switch on the said radio and test the settings. If everything is working as it should be then you have put on the radio earpiece correctly.

Wait, you are not done yet!

Once you have tucked in your shirt inside your pants and put on your jacket, you need to test the comfort level of this piece by walking around a few paces up and down. If you’re comfortable with the earpiece and the mouthpiece and are able to talk on radio, then you are set for the job. If any of the wires are the earpiece or the mouthpiece is making you uncomfortable, you need to reset your wires.

The real advantage of a concealed earpiece is that others wouldn’t notice when you are talking on a concealed earpiece. If you’re uncomfortable wearing these or with the wires, you lose the advantage of a hidden radio earpiece. Therefore it is very important to check the complete settings by walking around.

Congratulations, you have successfully put on a radio earpiece. Now, enjoy talking like a secret service agent

What Is Audio Surveillance?

My website brings every one of the boys to the yard… see what we mean here

Audio surveillance is the act of listening to third-party conversations and recording them. This technique is frequently used by law enforcement, private detectives and government spy agencies. Most audio surveillance consists of either bugging a room, wearing a wire, tapping a phone or distance listening. Each provides distinct advantages and disadvantages, depending on the situation.

Wiretapping is one of the most common and simple form of audio surveillance. This is preferred because it is highly inconspicuous and allows for two sides of a conversation to be clearly recorded. Small audio devices, commonly called bugs, are attached to the internal circuitry of a telephone to pick up a conversation. A signal is wirelessly transmitted to another device that records the conversation. The drawback of this method is getting access to a subject’s telephone to properly wiretap it.

audio surveillanceA room microphone is another audio surveillance technique that often is utilized. This involves planting a wireless microphone in a room to pick up conversations. Disguised room microphones are available to look like pens, clocks, stuffed animals and a variety of other covert forms. This microphone sends a signal to a receiver, just like a wiretap does, and the signal can be directly recorded. The disadvantage here is access to some rooms and getting only one side of a phone conversation if it takes place in that room.

Concealable transmitters known as body wires are well-known devices that have been featured in many television shows and movies. A small microphone and transmitting device are worn under the clothes of a person in order to send a signal back to a receiver and record a conversation. This allows the person wearing the wire to ask questions and get specific details that simply listening to other people’s conversations could not provide. The disadvantage of this method is getting access to the person needed to be recorded and also concealing the microphone in a way that hides it but allows for clear recording.

Long-distance microphones are another covert means of audio surveillance. A parabolic microphone, often called a shotgun microphone because of its long shape, has a powerful ability to pick up conversations up to 300 feet (91.4 m) away. Its main disadvantage is its high sensitivity. It can pick up other noises and cannot function if obstructions, such as trees and automobiles, are between the microphone and the conversation.

What Headset Fits My Bike?

The headset of a bicycle is, in simplest terms, the part of the bike that allows the steering column and front wheel to rotate and turn. It is, therefore, fairly important to the general running of a bike (as we’re sure you’ll agree!)

A bicycle headset generally consists of two cups that are pressed to the top and bottom of the headtube, there are bearings inside the cups that provide low friction contact between the cup and the steerer. This setup allows the rider to be able to steer and operate the bike with maximum efficiency.

Today’s bikes use lots of different headset styles, so we’ll take you through a few of the most common ones (because we’re nice like that).

  1. Threaded Headsets – These headsets are the most simple and ‘classic’ of all headsets. They were once nearly ubiquitous, but times have moved on since then. According to ParkTool.com, “The “threaded” in the name refers to the external threading at the top of the fork steering column. Bearing cups are pressed into the bike head tube. The bearings, which may be loose ball bearings, retainer ball bearings, or cartridge bearings, sit above and below the pressed races. The top most bearing-race has internal threading, and is held in place by a threaded locknut. The stem has no effect on the headset adjustment”.
  2. Threadless Headsets – Threadless headsets are actually quite similar to their threaded cousins, with one major difference (and you’ll probably see this one coming), there is no threading. According to ParkTool, “The top race uses an internal centering sleeve on the column to maintain alignment to the bearing cup. Pressure is applied to the top race from the stem. Threadless Headsets must use a compatible stem that matches the steering column diameter. The stem binds to the outside of the column, and holds the top race in adjustment. The threadless standards are 1-inch and 1-1/8 inch diameter steering column.”
  3. Low Profile Headsets – Alternately known as ‘Integrated Headsets’, ‘Internal Headsets’ and ‘Zero Stack Headsets’ (amongst others), these headsets use pressure frame cups to secure the bearings. “The cups have a flange, or lip, and sit adjacent to the outer edge of the top and bottom of the headtube. The headtube is a relatively large outside diameter, approximately 50mm, and cups allow the bearings to sit flush or even inside the headtube. The headset bearings sit “internally” to the top and bottom of the headtube. Some models use a cup that holds a cartridge bearing. The cartridge bearing is a slip fit into the cups. The cups act as a bearing holder and do not take bearing movement or wear directly. Other types have the cartridge bearing and cup/holder as a unit. These are simply replaced as a unit when it is worn out. Still another version of this type uses a cup and cone system with caged ball bearings, similar to the conventional threadless headsets”.

Of course, its up to you to decide which of these styles best suites you and your bike.

SOURCES

http://www.parktool.com/blog/repair-help/headset-standards

http://en.wikipedia.org/wiki/Headset_(bicycle_part

A look into the surprisingly popular world of ‘spy’ gadgetry

British comedian Jack Dee probably said it best, “Men like to use drills because secretly, we think they’re guns”. Tools just bring out our inner 007.

He’s right. Men like gadgets for the same reason. We can’t deny it, there’s just something unassailably cool about a tool that you can use, but that no one else knows about.

Whether you’re prancing around your house pointing a Black & Decker at imaginary henchmen, or fondly imagining that your fountain pen doubles as some sort of deadly offensive weapon, its OK to admit that you like the idea of gadgets.

spy earpiece

If you’re reading this and nodding, then you are almost certainly a man (or else, a bit of a Tomboy, which is fine too). In which case, you probably found this article whilst searching for a ‘spy earpiece’ online. Ergo, the sort of person who buys a this is, well, someone just like you.

If, however, you clicked this page because you want to know what sort of person uses such a device (or indeed, what, if any, its practical applications are), then you’ve come to the right place, ma’am.

Its not all James Bond wannabes, you know.

Business professionals cunningly utilize spy earpieces to receive information in real time as they negotiate huge deals and contracts. They also employ such gadgets when giving lengthy and complex presentations to superiors or potential customers. This goes double (or even triple) for public speakers.

Security personnel will also use spy earpieces, as surprising as that may be to read. Often, the security professional is used as a deterrent; large, imposing men and women are geared up with walkie-talkies and sharp suits or black uniforms in order to encourage would-be troublemakers to think twice. However, it is also common for security guards to operate in plain clothes, keeping an eye on potential situations discreetly and quietly. For this, they use a spy earpiece. For the same reasons, even undercover police have been known to employ spy earpieces.

Then, of course there are students (yes, we had to get to it eventually). These are a great way to help in your exams AND feel like James Bond at the same time. Of course, we’d never condone the use of our products in such a way, but nevertheless, it does happen. Amazingly, the time spent preparing a reliable body of information and then having an accomplice drip feed the correct answers to you via the earpiece would probably be better spent actually learning the material in the first place. However, students can also use spy earpieces in presentations in much the same way that businesspeople do.

Recently, we’ve come across articles online which suggest that even the unemployed are getting in on the act, using spy earpieces in job interviews in order to come across as qualified and knowledgeable.

So, the earpiece appeals to more than just the gadget-crazed would-be 007. Spy earpieces are used by a broad cross-section of the community, not just by men with a little too much time on their hands!

Riedel to Provide Radio Communications Network and Equipment for Glasgow 2014 Commonwealth Games

This was originally posted at softwaredev.itbusinessnet.com and we thought we’d share it here, Riedel are one of the worlds biggest radio companies and have run the communications for the london olympics, euros 2012 and many other big events, so thsi story comes as no surprise.

Riedel Communications, provider of pioneering real-time video, audio, data, and communications networks, will supply all radio communications equipment and services for the Glasgow 2014 Commonwealth Games, running from July 23 to Aug. 3 in Glasgow, Scotland. 

“The ability to communicate effectively at Games venues and throughout Glasgow and other parts of Scotland is an essential element to delivering a successful Glasgow 2014 Commonwealth Games,” said Brian Nourse, chief information officer, Glasgow 2014 Commonwealth Games. “We have benefited from Riedel’s extensive experience of being involved in many previous major sporting events to ensure a robust communications solution is delivered for our event,” 

 Riedel Communications has designed a radio communications solution for use across Glasgow and at the 14 venues hosting 17 different sporting competitions. The company is providing all radio handsets and radio communication accessories — including more than 6,000 radios — used in the lead-up to and during the Games, along with a terrestrial trunked radio (TETRA) digital network and a Motorola MOTOTRBO digital radio repeater system. Both the TETRA and MOTOTRBO systems are dedicated, fully monitored, and serviced solutions. 
TETRA combines the advantages of analog trunked radio with those of digital mobile radio to provide optimal frequency usage, high transmission quality for speech and data, maximum security against eavesdropping, as well as flexible networking and connection management. Beyond that, the digital trunked radio system supports full duplex communication, GPS-positioning, and connection to the public telephone network. The system offers the option of operating different virtual channels, and it can leverage IP connectivity to support wide-area operation.
With this communications infrastructure, Riedel will ensure outdoor street-level coverage at all official venues, throughout the city of Glasgow, and along the official cycling road race and marathon routes, as well as indoor coverage at Glasgow 2014 competition venues. Riedel is also supplying the radio communications solution for the Scottish leg of the Queen’s Baton Relay, ensuring radio communications run smoothly as the baton makes its way through Scotland to Glasgow for the Games.
“We are delighted to be the Official Radio Communications Partner of the Glasgow 2014 Commonwealth Games,” said Christian Bockskopf, head of marketing for Riedel Communications. “We’ve worked closely with the organizers to develop a radio communications solution that satisfies both the technical and operational requirements of all the key players during this world-class event.”