Society for Information Technology & Teacher Education blog
L A T E S T P O S T S
WiFi Enabled LTE Small Cell Gateway Market to Register a Strong Growth By 2021 – PMR
How The Headphone Transformed
The Best Online Pharmacy. Buy Cialis Without Prescription – Orders-Cialis.info
Spy Earpiece: A Micro Earpiece That Will Help You Through Presentations, Interviews, Speeches + More
MIT’s new method of radio transmission could one day make wireless VR a reality
Sepura Contributes to Success of Worldâs First Cross-border TETRA System
What 2 way Radio Channel Must I Use
Hytera Awarded Multi Million Dollar Contracts in Dominican Republic
Could hearing loss be a hidden cost of gaming?
How Many Walkie-Talkies Can Operate on the Same Channel?
On paper, connecting walkie talkie radios to a Wifi networkis is the most obvious method of controlling and communicating within a business. But the reality is that there arenât many radios on the market that have the capability to do this and many wifi networks arenât robust enough to manage lots of radios, this article predicts that this technology will be a growth market, we will wait and see.
WiFi enabled LTE small cell gateway is a type of a base station. Base station uses cellular wireless network for communicating with mobile phones or terminals. Base station connects mobile phones to a wireless carrier network and offers local coverage for a wireless network. The area of coverage varies from several miles to few city blocks. Each base station is typically owned by one carrier or wireless company and gives coverage only for that company’s network. It may also offer roaming coverage for other networks in case carriers have agreement for roaming and technology is compatible. Base station comprises of an electronic cabinet which connected by means of cables to a group of antennas. The antennas may be mounted on an existing structure or on dedicated tower structure including top of a building, church steeple or smoke-stack and water tower.
In radio communications, base station refers to wireless communications station implemented at a fixed location and used to communicate as wireless telephone system including cellular GSM or CDMA cell site, part push-to-talk two-way radio system, terrestrial trunked radio and two-way radio. A single location often operates several base stations owned by a different carrier. Smaller types of base stations or small cells include picocells, femtocells and microcells. WiFi enabled LTE small cell gateway is promising network element. A wide variety of base station deployments are in a small cell configuration. It has WiFi interface at end-use device and LTE interface at the carrier network.
Small cell is low-powered radio access nodes (operator-controlled) that operate in carrier-grade Wi-Fi (unlicensed) and licensed spectrum. Small cells normally have a range from 10 to numerous hundred meters. Small cell base stations are expected to play vital role in expanding the capacity of wireless networks due to increasing mobile data traffic. Mobile operators are increasingly looking forward to this technology in order to meet the rising demands for data, video and application access generated due to smart phones and other devices. Small cells aid mobile service that detect presence, interact wand connect with existing networks. Small cells offer increased quality of service and flexibility at an affordable cost. Small cell infrastructure implantation is an environmentally friendly approach as it reduces the number of cell towers and offers a cleaner signal using less power.
Rising numbers of wireless carriers or companies are taking dedicated interest in this industry owing to the proliferation of embedded WiFi features in fixed and mobile devices. Growing demand for more advanced handheld devices such as smart-phones and tablets is expected to create demand for technologies with high internet speed. This in turn, is expected to drive the growth of WiFi enabled LTE small cell gateways.
It is surprising how in a crowded, noisy environment you can still create your small world. This is one of the most amazing changes that have been made by headphones. Small devices with a big impact on the world are the only way to describe headphones. In the past, the only way to listen to music was through devices that allowed everyone to listen to music at the same time. With the introduction of headphones, you donât have to bother everyone with your music; you can create your space and enjoy listening to what you like directly to your ears.
How headphones have changed over time
Early headphones were mainly used for communication purposes. The birth of headphones in early 19th century was purely for communication and professional uses. It is strange how the creator of headphones Nathaniel Baldwin didnât have the musical concept in mind. The uses of headphones at this time were purely for professional uses by people in the army and also church coordination.
Discovery of stereo phones for music was a big break in the mid-19th century, the whole perspective of headphones changed from professional use and they were given a musical touch. The musical evolution changed the concept of headphones, and this gave birth to the stereo phone technology to cater for musical fanatics. This was when headphones specifically for music were created, but they were expensive.
Light weight portable headphones were discovered in the 1980s there was a big break after everything went mobile. The headphones now become lighter, and you could see youngsters carrying them around. The growth of the pop culture at this time might have had a huge impact on how people wanted to listen to their music and this made headphones grow more. The sound quality becomes better at this time.
Modern fashion statement headphones are now common to bring out personality and social standards. The headphones that we have now are bringing the fashion statement in mind. The unique design and the big brand names like Beat by Dre are bringing a new perspective on the way we view headphones. The technological advancement is sound quality is now improving due to latest technological innovations.
Benefits of headphones in the modern world
Good sound quality and faithfulness is one of the main benefits of headphones. We all agree listening to music through headphones feels good compared to listening through loudspeakers. The reason for this is quite listening simply. Music from headphones has no interference from external forces and especially if you are listening to music through quality headphones.
The concentration at work is now better with headphones. With the use of headphones, it is now possible to get peace of mind and keep up concentration whilst working. It is surprising how music takes us to a new world where we can be able to reflect and focus on the work we are doing. This is the reason why you will find people working in jobs that need a high level of concentration using headphones all the time.
Peace of mind and calming stress is a major reason why many people use headphones. Music is therapeutic, and it works wonders in relieving stress and restoring peace of mind. Listening to music through external speakers is good for entertainment but not necessarily for healing. There is something special about listening to music through headphones because it brings calmness and brings back peace of mind.
Privacy is one thing that many people seek in the crowded and noisy world. If you want to maintain privacy, then you can easily escape in your headphones and get the privacy that you need. People around you will understand that you need privacy and allow you to have your solitude.
Who uses headphones?
The uses of headphones are now limitless, and they go beyond just for the sake of entertainment and communication purposes.
Music lovers get lost in their headphones for hours listening to music without interrupting the rest of the world with the type of music that they love. Using headphones, music lovers can get the sound effect that they want from the headphones through sound effect settings.
Transcribers who translate audio content into text need headphones to be able to listen to what they are typing. This is one of the most common professional use of headphones. Other people like pilots, recording artists and also the military use headphones in their job.
You can find a whole ton of walkie talkie headsets at this amazing store headsetonline.co.uk
Why buy cialis on the internet is really beneficial for you?
So you’ve decided to order cialis and do not know where to start? We can give you some advice. First, ask your doctor for advice in order to properly determine the dosage, when you do that, you need to decide for yourself exactly where you will be buying the drug. You can buy cialis online, or you can just buy it at the pharmacy. Buy cialis online has a number of advantages, one of which is price. The cost of the Internet will always be lower than in stores, and when combined with the free shipping, it will be the best choice. Besides the price there are a number of advantages over conventional pharmacies, one of which is anonymity. Also, you can always check the online store on reliability, read reviews about it and the opinion of other buyers. Read more.
Spy Earpiece: A Micro Earpiece That Will Help You Through Presentations, Interviews, Speeches + More
When you think of a spy earpiece, the first thing that comes to mind is inspector gadget or Mission impossible, well it does for us anyway. But there are real world applications for these earpieces are wide. As this article explains, when you need a little help with prompts on a big presentation or you need to receiveÂ instructions during a lecture, then a micro earpiece could be the answer.
This device originally developed for covert operations is now made available for the public to use. Each earpiece kit can provide a way for you to transmit and receive audio information without anybody in the room knowing. Whether you want to receive pre-recorded messages or information from another party to assist you during your presentation / interview or speech, the earpiece can be set up with your phone, audio recorder, radio, or MP3 player to send the message to your earpiece , placed in your ear channel so that it is undetectable .. All kits also include a built in microphone so that you can engage in 2 way conversation should you wish
So how does it work?
The key is the inductive transmitter that will transmit audio from a phone / mp3 player to the earpiece. The transmitter itself is available in many forms. For example the transmitter may be included within a neckloop to be worn around the users neck, this may connect to your phone or mp3 player via its earphone socket. Or you may have a Bluetooth are often included in everyday objects such as a pair of glasses, a Pen or even a bluetooth watch. The transmitter acts as the aerial for reception and signal transmitter from phone to earpiece. At the same time, output sound picked up by the tiny microphone attached to the neckloop / pen / glasses is sent through your phone just as if the user is talking directly into it.
How to Use The Spy Earpiece?
Depending on what kind of information you wish to receive the earpiece can be set up to suit. For example during a presentation or speech you may wish to pre-record your speech or presentation on an mp3 player, then play it back to yourself during the presentation / speech. Or simply record a simple prompt for each point you would like to make. You could then connect up your mp3 player to an inductive neckloop included in most earpiece kits, and wear a spy earpiece. So long as the battery is inserted into the earpiece you will hear the audio from your mp3 player in the earpiece.
Alternatively you may prefer to have a team prepped in another room to assist you during your speech. This can be achieved by simply starting a mobile phone conversation with your team just before the speech starts. You would then need to either connect an inductive neckloop to the headphone output of your phone, or pair your phone with a bluetooth induction neckloop / pen / glasses. Insert the earpiece into your ear making sure the battery is inserted correctly. Your team should be able to hear your speech in real time over the phone, and can give you tips in your earpiece along the way. The same may apply in an interview situation, you may wish to have a third party issue you advice during your interview.
Lets not forget the original intention of the Spy Earpiece which is for security and covert surveillance. The Spy Earpiece excels in these situations where the requirement is for a security operative to communicate covertly.
The key to success is in the careful planning and preparation so that everything runs smooth.
The way I see it, when the challenge is great and the results mean everything, why not try the Spy Earpiece and take the risk out of the equation?
VR is the Buzz word for this year, every technology company clambering to get their headset out on to the market. Much of the market needs to catch-up though, the power of home computing needs to improve and removing the inevitable extra cabling and wires that come with current headsets. Luckily this article is about the future technology of VR headsets, see what we can expect as this technology grows.
If you want to use one of today’s major VR headsets, whether the Oculus Rift, the HTC Vive, or the PS VR, you have to accept the fact that there will be an illusion-shattering cable that tethers you to the small supercomputer that’s powering your virtual world.
But researchers from MITâs Computer Science and Artificial Intelligence Laboratory (CSAIL) may have a solution inÂ MoVr, a wireless virtual reality system. Instead of using Wi-Fi or Bluetooth to transmit data, the research teamâs MoVR system uses high-frequency millimeter wave radio to stream data from a computer to a headset wirelessly at dramatically faster speeds than traditional technology.
There have been a variety of approaches to solving this problem already. Smartphone-based headsets such asÂ Google’s Daydream ViewÂ and Samsung’s Gear VR allow for untethered VR by simply offloading the computational work directly to a phone inside the headset. Or the entire idea ofÂ VR backpacks, which allow for a more mobile VR experience by building a computer that’s more easily carried. But there are still a lot of limitations to either of these solutions.
THE MOVR PROTOTYPE SIDESTEPS TETHERED VR ISSUES
Latency is the whole reason a wireless solution hasn’t worked so far. VR is especially latency-sensitive, along with the huge bandwidth requirements that VR needs to display the level of high-resolution video required for virtual reality to work. But the MIT team claims that the millimeter wave signals can transmit fast enough to make a wireless VR headset feasible.
The issue with using millimeter wave technology is that the signal needs a direct line of sight, and fares poorly when it encounters any obstacles. MoVR gets around this by working as a programmable mirror that can direct the direction of the signal to the headset even while itâs moving to always make sure the signal is transmitting directly to the headset’s receivers.
For now, the MoVR is simply a prototype, with the team hoping to further shrink down the system to allow for multiple wireless headsets in one room without encountering signal interference. But even as a proof-of-concept, it’s an interesting perspective on how virtual reality could one day work.
We take it for granted that when we move around the country our mobile phones connect to the nearest mast, or we go abroad and our phones automatically connect to the network, with tetra, this is not as easy, but this article is about a test that Sepura completed connecting two TETRA networks in Norway and Sweden, interesting stuff.
Sepura radios have successfully participated in interoperability trials for the worldâs first cross-border TETRA communication system, linking RAKEL and NÃ¸dnett, Sweden and Norwayâs public safety networks.
More than 350 first responders were involved in the trials, which took place in MerÃ¥ker, close to the Swedish border, in a crisis response exercise involving public safety users from both countries.
The cross-border system utilises TETRA Inter-System Interface (ISI) functionality to connect networks together, effectively allowing users to roam to another network. This allows first responders to use their radios in both countries â vital for smooth collaboration in emergency situations.
The initiative to strengthen co-operation between national emergency services started in 2013 with the EU-funded Inter-System Interoperability project, designed to improve the ability to respond to natural disasters and security threats. The RAKEL and NÃ¸dnett networks are scheduled to be ready for bi-national operational use in early 2017.
Sepuraâs STP9000 hand-portable radios and SRG3900 mobile radios were used by both Swedish and Norwegian emergency services during the exercise, although all Sepura radios â including the new flagship SC20 range â meet the technical requirements of the ISI system.
âThis is one of the most advanced multinational radio communication projects in Europe,â said Tariq Haque, Product Manager for Sepura.
âAfter two yearsâ development, bi-national interoperability has become a reality, bringing cross-border mission critical communications to Sweden and Norway.
âWe are extremely pleased to have played a part in this ground-breaking event.â
You may get confused about various types of walkie talkies on sale in the UK, or not be certain what type of walkie talkies you require, and what youâre legally allowed to use in some other countries that you plan to visit, or in your part of the world. Firstly, it is important to have in mind that any type of walkie talkie will function in any part of the world.
A walkie talkie is used on a channel that has a frequency associated with the walkie talkie. In other words, if a channel has a frequency different from that of a walkie talkie, then the two will not work together.
License Free Walkie Talkies
There are 446 license-free frequencies that can be used for leisure radios such as, Motorola talkabout, Binatone and Cobra radios. However, there are eight PMR466 frequencies or PMR466 channels that can be used.
The spacing between each of these frequencies is 12.5 kHz. As the system name suggests, PMR446 frequencies are located around 446MHz and are in the UHF segment of the radio range.
Even though they are not necessarily authorized, PMR446 frequencies are harmonized for use across European countries.
High level use of PMR446 frequencies may result in some annoying problems. However, these can be reduced or rectified by changing the frequency of the PMR446. Other systems such as DCS codes and CTCSS tone can as well help in alleviating the problems.
In view of the possible high use of the frequencies and the PMR446âs unlicensed nature, the scheme is not appropriate for individuals who need to gain access to frequencies at specific times and locations or for life use.
These are simple, short-range walkie talkies that conform to the European Union-wide PMR446 standard and can be used by any person in the United Kingdom or European Union without a license. These types of radios are commonly sold in High-Street shops as well as in most radio outlets.
Commonly known as “PMR446sâ radios that meet these standards usually have a power output of 0.5watts, meaning that their range is lower compared to the powerful business walkie talkies that are a licensed and which feature power outputs of 4-5 watts. All of them make use of the same eight channels and this causes problems sometimes if a given area has a lot of radio users using these channels.
Licensed Walkie Talkies
Two Way Radio for Business
Licensed handheld walkie talkies can have a power output of 5 watts, but “license free” PMR446 walkie talkies can only have 0.5watt power output. Therefore, the licensed walkie talkies usually have a better signal penetration and better range in buildings.
A majority of businesses prefer using a licensed 2-way walkie talkie system because, in spite of the benefits of license free walkie talkies (PMR 446), they have some downsides (like lower power, a short range and interference) which make them less effective than licensed business radio systems.
Taxi as well as other transport companies, and large sites like factories or hospitals, and businesses situated in a number of different locations are excellent examples of circumstances where a licensed radio system may be a favored option.
These situations require more powerful radios as opposed to hand-held portable walkie talkies with low frequencies. If the system of your radio relies on vehicle-mounted radios or a base station, a licensed radio system is necessary.
If you want start using a radio system in your business, then you will have to get a license from Ofcom. In other words, Ofcom is a company that controls who can transmit on what frequency and where, to ensure that different users donât interfere with each other.
Business radio system users range from factories and taxi companies, to industrial sites, hospitals, transport operators and care homes. To begin Ofcomâs licensing process there are a number of requirements that a business must first of all fulfil.
Ofcom license is especially important regarding official radio users like police, military, railways, air traffic control and emergency services, railways, etc. Radio systems that meet specific standards can be used without any license from Ofcom. For many walkie talkie users, license free radios will be okay. And if you are in need of a license, it isnât that expensive or complicated to get one.
The UK simple license is a license issued by Ofcom and gives holders the right to use more powerful radios. It is effectively a license to use powerful radios any place in the UK, using give frequencies which are shared by anyone using this license. This license is easy and quick to apply for, costs about Â£75 per organization, and is valid for 5 years.
It is the only option for people who need to use their radio systems anywhere in the United Kingdom, and is ideal for most business radios users.
This license provides you with specific frequencies or frequency allocated just for your organizationâs use within a given geographical area. The cost of the license varies from moderately cheap in most locations in the UK (about Â£100 annually), with the cost heightening in key cities, more so London, where the demand for radio frequencies is very high, going for up to more than Â£500 per year.
Radios that are designed to use dedicated frequencies such as this, should not be used outside of the licensed area, since the same frequency will possibly have been assigned to somebody else and you will therefore be causing interference to them.
UK Business Radio Suppliers License
This is a license for hire companies and radio equipment suppliers. It allows these companies to do short term radio hire via a set of frequencies allotted to radio hire companies. It also allows these companies to provide âdemoâ radio systems to potential customers and to undertake repairs to radio systems.
When these companies hire out their radio equipment, itâs hired using this license, so that the person hiring it does need to worry about licensing issues.
The importance of walkie talkies and radios in the UK and other parts of the world cannot be overlooked. Not only are these gadgets important in everyday communication, but they continue to play a very crucial role in the development of other communication tools. A lot of useful information about radios and walkie talkies has been highlighted in this article for the benefit of radio users and the public in general.
Hytera are the fastest growing radio country this year, they have opened offices all over the world and are taking market share from Motorola. When you look at their Hytera accessories, Chargers, repeaters, hand portables and base units they are of an excellent standard and quality. That is probably why the Dominican Republic was persuaded to use them for two big projects.
Hytera, a world leading solution provider of Professional Mobile Radio communications, was awarded two projects by the Ministry of the Presidency of Dominican Republic. In order to establish a nationwide emergency response network for National Emergency Care System and Security 9-1-1 (Sistema Nacional de AtenciÃ³n a Emergencias y Seguridad), Dominican Republic government selected TETRA (Terrestrial Trunked Radio) technology for mission critical communications, and launched two public tenders at the end of 2015; one is to cover two cities, Haina and San Cristobal, adjacent to the capital city Santo Domingo, with 5 sites and 528 terminals, while the other is to cover Santiago, the second largest city of the country, with 30 sites and 2,155 terminals.
The existing TETRA network in theÂ Santo DomingoÂ area was delivered also by Hytera as a result of a contract awarded by Dominican Republic’s MinistryÂ of the Presidency in 2013. The project includes several components: the 911 system, a camera surveillance system and the communications infrastructure with its respective terminals which was awarded to Hytera. âThe system in Santo Domingo offers reliable communication services to the public safety forces, and it is a very good testimony of Hyteraâs solutions and supports,â said Fernando Camelo, regional director of Hytera international business.
âDominican Republic government officials have spent a lot effort to choose the right technologies for its public safety forces. Obviously, TETRA has been widely adopted and proved. We are proud to be part of the initiative of building a united nationwide mission critical communication system for the country,â commented Ming Kam Wong, deputy general manager of Hytera international business.
The TETRA digital standard as a global open protocol provides secure, encrypted communications for mission critical operations as well as promoting a more efficient use of spectrum. More than 750 interoperability (IOP) certificates have been awarded to more than two dozen manufacturers by the TETRA + Critical Communications Association (TCCA), the governing body, globally, for the TETRA standard.
Is this is a real problem? Do you use a set of headphones whilst gaming? This article has information on how damaging wearing gaming headphones is and what the future impact might be. Read this, examine how you use your headphones and get on with lifeâ¦
According to the Q1 2016 GameTrack report, 18.8 million people between the ages of 6 and 64 game and those between 11 and 64 spend an average 8.8 hours per week doing so.
Â Amongst Gamers the largest group is 15 to 24 year old males who are most at risk of permanently damaging their hearing. This group spends the most amount of time gaming and are also the most attracted to the âloudâ games. Furthermore a majority of them live in a shared accommodation and use headphones so as not to disturb others. This group also the most likely to take part in other activities which can be harmful to their hearing such as listening to music through headphones, going to gigs and festivals, and nightclubs.
Â Unfortunately the price of their enjoyment could well be significant and permanent hearing damage. Whilst there is clearly a risk to the Gamer, it could transfer as a liability to the games companies in the form of legal action relating to their duty of care.
Â The first significant step is to make Gamers aware of how much sound exposure they are experiencing and what they can do to prevent hearing damage, because hearing damage is permanent
Â Hearing damage is caused by the combination of how long you listen (time), how loud you listen (volume), and what you listen to (energy content). The combination of these three factors create a âsound doseâ, if the dose is too high it starts to damage your hearing.
Â The UNâs World Health Organisation and hearing conservation organisations are increasing awareness of the risks and advise users to restrict their daily sound dose to less than 85dB average over 8 hours.
Â Gamers who use headphones currently have no realistic way to indicate what level they are listening at and how much of their daily sound dose they have used. The answer will be to provide them with an intelligent sound dose measurement app or software, giving them their individual sound dose exposure information and guidance, with optional protection, so that for the first time they can make informed decisions about their hearing health.
Theoretically, you can use an unlimited amount of walkie-talkies on the same channel (although in practice you might experience a few problems if you took that suggestion literally). Basically, there isnât really a set limit. You could use as many as you like provided they are set up correctly. Anybody set to the right channel and in range at the time of transmission would then be able to pick up the signal and respond to it.
Most radios have access to 8 channels. These channels each have 38 separate âidentification tonesâ. The user sets his/her channel up with the desired tone and then only other users who know the channel/tone will be able to hear the transmissions. As a result, there are, in any given area, about 304 different combinations, so signal interference is unlikely to affect you.
Please do not interpret this answer as saying that your radio has access to 304 possible channels. It does not. It will likely only have access to 8. Some less reputable manufacturers tend to falsely imply access to 304 channels; this is simply not the case. You will have access to 304 possible tone/channel combinations, thatâs all.
To better explain the CTCSS codes and how they work; weâll include a little information from Amherst.co.ukâs FAQ page.
âCTCSS stands for “Continuous Tone Coded Squelch System”. These codes are also often called “Privacy codes” If a CTCSS tone is selected; a CTCSS sub-audible tone is transmitted along with the regular voice audio by the transmitting radio. The receiving radio, set to the same CTCSS tone, will only receive audio if it contains that sub-tone. Interference from other users on the same frequency is therefore rejected (unless they are also on the same sub-tone). This is a way of allowing groups of users of walkie-talkies on the same channel to avoid hearing messages from other nearby usersâ.
So, in conclusion, you can probably use as many walkie-talkies as you like on the same channel. As long as the units in question are of the same type (either VHF or UHF) and have the same CTCSS setup, then you simply shouldnât have a problem. You also shouldnât suffer from signal interference due to other users (although you may still experience signal loss/interference/degradation from other sources). We have talked about combating signal loss elsewhere, so please see the other questions if you have any problems in this area.