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.
Buying 2 way radio equipment is a very beneficial investment, but in order for you to get the most out of your money you should ensure that the equipment is well cared for. If you use and maintain your 2 way radios with proper care, they will function at their optimum capacity and you can expect them to last for many years. While no 2 way radio can last forever, there are some simple practices which can help extend the life expectancy of your 2 way radios and ensure they function at their very best. In this article, we are going to take a look at some of the top care tips for your two way radios;
You should always store your radio(s) correctly so as to keep it in a tip top condition. The ideal environment for storing your radio involves a cool and dry (ideally at room temperature, which should be about 72 degrees Fahrenheit) with limited exposure to the extreme weather conditions like excessive cold or heat, and such other elements of water and sunlight. Excessive temperatures can easily damage the batteries; the moisture may end up corroding the batteries. Also, when storing your 2 way radio, you should make sure that it’s turned off and batteries are removed.
Charging Your 2 way Radio
First of all, you should know that 2 way radios are usually slightly different, so you need to familiarize yourself with the specific charging instructions of your radio. That being so, it is important to note that nearly all of the manufacturers will advise that you to turn off your radio while itâs charging. If you do not, your radio will be drawing current and also charging at the same time, and this can end up shortening the lifespan of the battery.
Overcharging your radio batteries can also cause numerous problems and will have a negative impact on its’ overall battery life, so you should make sure that when it’s charged fully you unplug its’ charger; do not leave it charging all through the night if its’ likely to remain fully charged for a long period of time while its’ still being charged. When you buy new batteries its’ the only time you can leave the radio charging overnight before you start using them for the 1st time; it’ll help you get the maximum battery capacity.
Day to Day Use
Every two way radios user should be very mindful of their daily use. Although there are some two way radios which are designed to be quite robust, like the explosion proof and waterproof radios, they should still be treated with great care, always. Even if you have a waterproof or explosion proof radio, do not subject it to extreme temperatures.
You should also avoid grabbing your two way radio by its’ antenna, as this will eventually have a negative impact on your radio’s reception and transmission quality. In addition, you should also avoid drops so as to maximize the long term functionality of your radio; consider using two way radio belt clips so as to reduce the chances of your radio getting dropped and subsequently getting damaged. Protecting the exterior of your radio helps protect its’ interior, thus minimizing the repairs and the replacing of the equipment.
Another important tip to note when it comes to the day to day use of two way radios, is you should never expose your radio to any solvents (unless it has been designed to be used in the harsh conditions); this includes any cleaning fluids and alcohol. Also, try and stick with the accessories which are designed specifically for your particular type of radio; this is especially important when it comes to your radio battery, charger and adapter. Using an incompatible accessory can end up shortening your radio’s lifespan and can even destroy it.
Cleaning Your two way Radio
You should regularly clean your radio to keep it in good working condition. The most effective and efficient way of cleaning your two way radio also happens to be one of the easiest ways as well; strong chemicals or intensive cleaning isnât necessary. The only supplies you’ll need include some water and a microfiber cloth. The microfiber cloth will effectively wipe away the smudges and dirt without causing any damage to your radio. As for the more stubborn marks and stains, you can use a damp cloth and then wipe until the radio is clean. Remember, never immerse your 2 way radio in water to clean it.
2 way radios are among the most versatile and toughest communication solutions, often lasting for many years before needing any repairs or replacement. However, in order to extend the lifespan of your 2 way radio even further, it is best to employ the above tips for two way radio care to fully secure your investment. Protecting your 2 way radio will not only increase its’ longevity, but it also ensures that you will always have reliable communications. Well, as you can see above, taking care of two way radio is relatively easy, and the amount of maintenance required is minimal. A simple cleaning now and then, proper handling, maintenance and storage is all you need in order to extend the lifespan of your 2 way radio and keep it in a great working condition.
Motorcycle helmet intercoms have recently gained lots of popularity for the safety and convenience they offer. They have lots of enhanced features which help riders focus on driving. That being so, you should know that being able to choose and use the right type of motorcycle helmet intercom is extremely important as it makes it easy for riders to perform all kinds of actions and do all kinds of things without any fear of losing control of their motorcycle. In this article, we’re going to be talking about the best features to look for in a motorcycle helmet intercom, and the different types of motorcycle intercoms available in the market;
Here are the features to look for when looking for a walkie talkie headset for your motorcycle helmet:
Well, riding in a motorcycle usually makes the rider quite vulnerable to various kinds of road and environmental factors. This includes dirt, dust, rain, humidity, and all types of things which one can possibly encounter. Because of this, you should consider getting a completely weatherproof motorcycle helmet intercom. Fortunately, most of the motorcycle intercoms in the market today are weatherproof, water resistant or waterproof. For the best protection from the elements, consider choosing a weatherproof or waterproof intercom, instead of the water resistant ones; this ensures that despite any hazards and rain, your system will be safe, and still work efficiently.
You should also consider getting a system that has a headset speaker for both ears or one ear. This particular factor depends on personal preference as some may find it more convenient to use a one ear headset, while others may prefer both years as some riders like hearing sound in both of their ears. That being so, you should know that installation and moving of the intercom to a different helmet is much easier for the systems which have only one ear.
Another important factor to consider is voice activation. Many systems have the voice activation feature which keeps the headset(s) quiet when no one is talking. The voice activation feature also has the ability to get disabled and a push to talk switch feature can be used instead. Apart from that, sound quality and noise cancellation is something you need to put into consideration. Many motorcycle intercoms have the noise reduction feature with digital signal processing which helps reduce the noises/sounds they pick up from your microphone; this feature is especially important if you are a fast rider.
For those who like riding with some music playing, you should consider going for the motorcycle intercoms which come with either a built in FM stereo, or an auxiliary stereo input for iPod, a Walkman, MP3, or a satellite radio unit. This type of input can also be used to receive driving directions from voice prompted GPS unit.
There are some motorcycle intercoms which can be mounted in your helmet, on your belt clip, on your bike or even put directly to your ears; this usually depends on just how big or bulky the intercom is. Choosing this feature depends on personal preference. You should choose the one that you’d be most comfortable using.
Last but not least, connectivity for cell phones is another crucial factor to consider when choosing a motorcycle intercom. This feature allows you to access the phoneâs features while you’re on the road. The feature is best paired with hands free operation.
Without a motorcycle intercom, riding can be a very solitary experience. Using an intercom is a great way of clearing your head and putting your thoughts together when you’re riding alone. However, if you’ve a passenger, or you are biking with another rider, sooner or later you’ll want to converse with them. A motorcycle helmet intercom will let you do this, and so much more.
That being said, the problem is that there are very many motorcycle intercoms to choose from. And given the fact that motorcycle helmet intercoms need to work in extremely difficult environments, choosing the best one can mean all the difference between enjoying your ride and hating it. Below, we are going to give you the different types of motorcycle helmet intercoms available, to help you make the best choice for your particular needs;
Acoustic Motorcycle Intercom
This is the most basic form of the motorcycle helmet intercoms. With this type of intercom, there are no electronics involved since it uses hollow tubes which have rubber tips that are normally inserted into the rider’s ear. A different tube is used as a mouthpiece for talking into, and they both connect through a junction box. This system simply uses the hollow tubes which the voices travel through.
One of the main benefits of a walkie talkie headset is the fact that you’ll find no batteries to mess with; this makes them highly reliable. However, there is no amplification which means that there is no way of regulating or adjusting the volume or filtering the wind noise. therefore at high speeds, it’ll likely be much harder to listen to. Another issue with this system is the fact that many riders tend to realize that the ear plugs are uncomfortable in their ears for an extended period of time. These acoustic motorcycle intercoms only work with driver to passenger and not bike-to-bike.
Wireless Intercom Technology
This is a most complex and technologically advanced system as it utilizes different forms of radio technologies namely FM, GMRS, FRS and Bluetooth.
FM (abbreviation for Frequency Modulation) is widely used because it’s very efficient when it comes to transmitting clear sound, however, if it’s used by driver to driver, its’ performance isn’t good if they’re too far apart. It is quite similar to the FM radio you normally listen to, however for the motorcycle intercom, a much narrower frequency is usually used. The FM intercoms work best when there aren’t any kind of obstructions (like hills) between the receiver and the transmitter.
If long range is the most important feature, then the GMRS Walkie talkie headsets will offer a much better performance. The FRS (abbreviation for Family Radio Service) and GMRS (abbreviation for General Mobile Radio Service) are the modern equivalents to old walkie talkies you might have used during your childhood days. The FRS intercoms typically have a maximum range of 2 miles provided there are minimal obstructions in between, while the GRMS intercoms can effectively communicate up to several miles. Just Like the FM, these two are public frequencies which means other people can get to hear your conversations, and vice versa. In some heavily populated areas these FRS/GRMS radios are heavily used, while out on the open road you should enjoy fairly private conversations.
One great thing about using the FRS or GMRS walkie talkie headset is that you can visit Headsetonline and purchase a walkie talkie headset and handheld radio which you can use to contact these units. In case someone is following you in a car, or they have a wired intercom system which allows them connect to an FRS or GMRS handheld radio, they will be able to communicate with you. The only downside is that you’ll find countless of these radios in the heavily populated areas and you’ll end up picking up lots of other transmissions.
A Walkie Talkie is a handheld receiver or portable radio. Walkie talkies come in a pair and they communicate quietly with one another using radio waves, on a single shared frequency band.
Almost all of us grew up with walkie talkies. As children, and especially before the age of mobile phones and technology, we all had a pair and played with them in our gardens.
Walkie talkies have made a comeback. Or maybe they never really went out of style but now theyâre sophisticated.
Each unit is battery powered and has an antenna for sending and receiving radio wave message. There is a transmitter / receiver and a loudspeaker. The loudspeaker doubles up as a microphone. There is a button that you push to talk, pretty much the same way that an intercom works. Some more sophisticated walkie talkies have separate loudspeakers and microphones; it just depends on what you need the walkie talkie for.
Walkie Talkies with noise cancelling headsets
Technology has changed so much and become so much more sophisticated. In the old days, think of the crackles that came with walkie talkies. It was often very difficult to hear what the other person was saying. But a pair of noise cancelling walkie talkie headsets will reduce or remove any unwanted sounds by using active noise control. Note that this is very different from passive headphones which use technique such as soundproofing. Noise cancelling is not soundproofing.
Our worlds are busy and we become bombarded and overwhelmed by everything around us. We need to listen to some things, but we want to cut out others. Noise Cancelling allows us to do this, while still allowing us to listen to the things we want to listen to at the volume we want them.
Pros of a walkie talkie headset?
Remember when we used to listen to music really loud so we could block out all the other external noise? You don’t need to do this anymore. walkie talkie headsets will block out most excess or excessive sound, or the ones you want blocked out anyway. You can now listen to your music at the volume you want, which does not need to be crazy, and the other external sounds (baby crying, man snoring next to you) will be blocked out anyway. Finally, you can listen to and enjoy music in the way you want to enjoy it, at a natural volume. You can hear the fabulous music, have a rich listening experience, and still not be disturbed by chatter around you.
Noise cancelling headphones are fabulous for when you travel or commute. You may be the kind of person who gets on a plane and train and chats to everyone around you. But you may be more solitary and want to sit down and zone out. You can do this easily with a walkie talkie headset. The beauty is that on a plane you wonât hear the noise of the aircraft or its passengers, but you will still hear the safety announcements.
Itâs really easy to work in a noisy environment with noise cancelling headphones. You can focus easily without being disturbed and can make use of any space, productively. You can even go and study your history while at a party or in a restaurant. It is also a good idea to use them at home, while studying for exams or so; they cut out the excess noise and you can focus totally on your work.
Students used to turn up the volume of their earphones in order to cut out the outside worldâ. But with a walkie talkie headset they are finding it is easier to study when music is at a lower volume and when the outside distractions have been eliminated.
Cons to noise cancelling headphones?
There are always cons to everything. Some parents may say they would prefer no headphones at all. They like their children to be available and to engage more and talk more, but we know this is the way of the world. Everyone uses headphones; parents included/ Use them in moderation of course, but still be sociable and take time out in the day, be headphone free, and engage.
Noise cancelling headphones are not very cheap and are in fact possibly even ten times more expensive than ordinary headphones. However, like anything that costs money, they will last for a long time and are super reliable. They may cost more money but will ultimately give a much better noise-free experience.
Lots of research has gone into the design of these special noise cancelling headphones. Each set consists of inner components that cancel out the disturbing external sounds. Ordinary headphones do not have these components, i.e., you cannot cut out the outside sounds. It is quite obvious then, why noise cancelling headphones are more expensive.
These internal components also use up a lot of power. The power can come from internal replaceable batteries or they can be rechargeable. The walkie talkie headset that carry their own power supply means they are heavier than ordinary headphones. Not all sets carry their own power supply. The ones that are rechargeable are lighter, but they can drain the devices they need to plug into for power.
The quality of sound when using a noise cancelling walkie talkie headset can be compromised. It is unusual though and it is only the most sensitive of ears that would pick this up. There have been very few complaints of a tinny almost mechanical sound, but these complaints are few and far between.
Not all sounds are blocked out by a walkie talkie headset, although we did mention this under pros as well. It is never possible to cancel out all external sounds, but we still need to be able to hear police sirens, pilot announcements or the high pitched screaming of your next door neighbor. All every day external sounds though are muffled and definitely much quieter, and the sounds that you don’t need to hear, are gone.
This news is making quite a buzz within the stock market forums, With two of our big players in our industry set to merge, this is huge news! Yes, Sepura have had their problems this year and Hytera have increased their market share, but we are not sure is this is good news or bad?
Another Asian corporation is set to hoover up a Cambridge UK technology company in a state of financial flux.
Communications technology business Sepura confirms it is in talks with Chinese company Hytera Communications Corporation Ltd.
It will be an all-cash deal but the acquisition price will be moderate because digital radios company Sepura is in a mess because of cash liquidity issues.
Sepura revealed the takeover talks after its share price spiked more than 25 per cent having nosedived in recent times due to cashflow issues and order delays.
Hytera is a world leading solution provider of professional mobile radio communications and operates globally.
Late today, Sepura issued a statement on London Stock Exchange confirming it was in preliminary talks with Hytera regarding a possible offer for the entire issued and to be issued share capital of the company.
Hytera confirmed to the Sepura board that any offer was likely to be solely in cash.Â The usual caveats were issued that there was no certainty any deal would go through and shareholders would be updated on new developments.
Founded in 1993 in Shenzhen, China, Hytera has grown to be a key player in the PMR (Professional Mobile Radio) communication industry with a large customer base in more than 120 countries and regions across the world.
In China, Hytera’s market share ranks first among Chinese manufacturers while globally Hytera has reached second place in the overall terminal category.
As one of the few corporations that masters TETRA, DMR and PDT technologies, and produces all series of products and solutions of all these mainstream digital protocols, Hytera leads in the draft of digital trunking standard in China.
Its acquisition of the Rohde & Schwarz TETRA business in August 2011 further strengthened its competitive edge in TETRA market.
Hytera has established a global sales network with 30 branches in the US, UK, Germany, Australia, Brazil and other territories and through Â 600+ partners across the world.
Hytera has an R & D team of over 1200 engineers in five research centres.Â Sepura won the Business Weekly Awards Business of the Year title in March after a record-breaking
2015 but hit liquidity problems this summer and has temporarily lost its CEO Gordon Watling to ill health.
Smart earpieces are the next frontier for the smart generation, we have all seen the earpiece that can translate instantly But that is just the start, as we can see from this article about this Xperia Ear wireless earpiece, it updates you from your phone when you put it in your ear. It wonât be long before we wonât need a smart phone everything will be in our ear.
Sony has revealed its âsmart personal assistantâ that include a bluetooth earpieceÂ will go on sale in November.
At the IFA show in Berlin today, the firm confirmedÂ it will launch this November âstarting in select markets,â although its price has still not been revealed.
The Xperia Ear wireless earpiece can update you with any missed calls or messages as soon as you slot it into your ear.
âIt will navigate you to where you want to go and make your life eye-free and hands-free,â said Sony Mobileâs President and boss, Hiroki Totoki of the âherâ earpiece when it was unveiled at the MWC show earlier in the year.
âIt is also powered by Sonyâs voice technology and will respond to a number of commands.â
The firm says the smart earpiece âis a next-generation wireless ear-piece that brings a new way of communicating, without compromising on enjoying the world around you.â
It reads users information such as your schedule, weather and the latest news to keep you up-to-date on the go.
Powered by Sonyâs voice technology, it responds to verbal commands, so you can ask it to make a call, perform an internet search, dictate a message or navigate to a certain location.
It connects to an Android smartphone via NFC or Bluetooth and talks to a host application, where you can customise settings, including the info you need when you first connect in the morning, touch commands and app notifications.
âIts lightweight and comfortable soft silicone ear-bud is built for continuous wear, with IPX2 water-protection and all-day battery life3,â Sony said.
Itâs available in Graphite Black and the innovative case doubles as a charger, so you can simply pop it in when you need to recharge.
It also unveiled the Xperia Eye, a wearable camera that acts as your personal sidekick, capturing everyday life moments with a 360 degree wide-angle lens.
Unveiled at Mobile World Congress (MWC) in Barcelona, the Xperia Eye can be attached to clothing or worn around the neck.
It forms part of a suite of connected gadgets designed to free people up from their phones.
Sony said the Xperia Eye is âa vision for a personalised assistantâ and joins three other smart gadgets that are connected to a Sony smartphone that acts as a hub, feeding information to them such as notifications.
These are Xperia Agent, Xperia Project and Xperia Ear.
Xperia Agent is a security camera-style device which acts as a home monitoring system, keeping an eye on whatâs going on around it and projecting notifications fed to it from a Sony smartphone onto surfaces around it.
âIt will provide you with useful information, communication assistance and home appliance controls,â Sony said.
Xperia Project projects an interactive interface onto any clear surface, meaning you can manipulate images, webpages and screens you would usually find on your smartphone, onto a hard surface.
Sony claims this projected image will respond to touch, voice and gestures just as someone would interact with your smartphone screen.
The Xperia Ear is a wireless earpiece that will update you with any missed calls or messages as soon as you slot it into your ear.
âIt will navigate you to where you want to go and make your life eye-free and hands-free,â said Sony Mobileâs President and boss, Hiroki Totoki.
âIt is also powered by Sonyâs voice technology and will respond to a number of commands.â
The wearable camera is the first time Sony has shrunk its image sensing and camera technology into such a small device.
Now itâs not the usual field that we cover, but it hit our radar. How many times have you seen an enthusiastic presenter or an excited contestant on TV drop their radio mic and crawl around on the floor, trying to pick it up! Well when a costume designer and a sound man get together then things get designed, and why this hasnât be invented before is beyond us, but it looks like an idea that could take off. Read the full article here.
Sound recordist Simon Bysshe and costumier Laura Smith have combined their knowledge and expertise to create URSA Straps, a unique range of low profile body worn straps designed to conceal radio microphone transmitters.
Officially launched this month and now available in the UK and Europe, URSA Straps are made from a specially developed bonded fabric that is ultra-slim and provides excellent stretch, comfort and breathability. Each strap incorporates a pouch to keep the transmitter locked in place and a cable pocket for managing excess microphone cable. URSA Straps are available in black, beige and brown skin tone colours and can be worn around the ankle, thigh or waist.
Bysshe and Smith developed URSA Straps after listening to numerous artists express discomfort while wearing radio mic straps. Traditional thick neoprene or elastic straps can irritate the skin, become soaked in sweat and are often impossible to disguise under figure hugging costumes.
âIt was obvious that a better way of discreetly securing transmitters was required,â Simon Bysshe explains. âAs a boom operator I had worked with many artists who disliked wearing transmitter packs because their associated straps could restrict movement and become uncomfortable. In some cases they had simply refused to wear them.â
Laura Smithâs knowledge of costume making proved invaluable as she was able to construct prototypes and identify the exact fabrics required to suit the needs of costume, artists and sound departments.
âAfter many months of research we decided to create our own unique hybrid fabric by fusing two stretch fabrics together,â Bysshe explains. âThis resulting fabric is just 1mm thick and much lighter and softer than any other fabric of its kind. Crucially we incorporated a hook Velcro compatible outer surface that allows the straps to be securely attached to themselves at any point.â
Bysshe tested the new straps while working on the second series of Sky AtlanticâsÂ The Tunnel. Lead actress ClÃ©mence PoÃ©sy was an immediate convert and provided valuable feedback to help develop the product. Bysshe has subsequently used URSA Straps on the third series ofÂ Peaky Blinders. The USRA Thigh straps were particularly popular with the cast members who found them secure, light and comfortable. The fact they can be worn around the thigh as opposed to the waist made them invaluable for use with the period costumes.
âWith URSA Straps we have created such a comfortable low-profile solution that artists often forget that they are wearing them. Now we have to make sure that actors remember to take them off before they leave!â Bysshe adds. âThe straps can be washed and re-used every day for many months. Our Thigh straps are particularly popular as they are designed to not slip down the leg. We achieved this by bonding on a strips of Polyurethane gripper to the inside of the straps.â
Outside film and television, URSA Straps are also proving popular with dancers who need to receive audio cues during a live performance. Using waist or thigh straps the sound team can easily conceal a receiver pack on their bodies without restricting movement or compromising the look of their costumes. URSA Straps have also developed a Double-Pack strap allowing artists to wear two packs on one strap.
Oscar-winning production sound mixer Simon Hayes was an early adopter of URSA Straps and describes them as a total game changer for his team.
âURSA Straps allow us to rig radio mics on costumes previously thought to be unmicable. Tight dresses, sportswear, stunt harnesses â they can all be easily miked using low profile URSA Straps. These straps are so popular with the actresses I work with that many have asked to keep theirs at the end of the production.â
URSA Straps are suitable for a variety of wireless transmitters including Lectrosonics, Zaxcom, Wisycom MTP40 and Sennheiser 5212. Two different pouch sizes are available to ensure optimum fit. Three different waist sizes are available: small, medium and large.
âInitially Laura and I were making the straps by hand in our garage,â Bysshe says. âWhen we realised their potential we scaled up production by taking on two experienced manufacturing firms in Leicester. Our launch has been a huge success with orders coming in from all around the world! We are now on our third large production run and expanding our market into Theatre, Concerts and Outside Broadcasts.â
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.
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.
When choosing the best two way radio, it is important to note that doesn’t matter which brand you pick. Whether you pick kenwood, Motorola, Icom, Hytera or any other brand, you should know that they all feature the same technology. Well, you might have noticed that most consumer radios tend to advertise a range that’s up to 30 miles. Truth is, the consumer FRS/GMRS radios don’t even provide anything close to the advertised maximum range; the range that a two way radio advertises is normally the range that a radio can get in the ideal condition. The ideal condition is clear line of sight like from the mountain top to the valley below; without any interference or obstructions.
Two way radios generally operate within VHF (that is Very High Frequency; 130 to 174MHzz) and UHF (that is, Ultra High Frequency; 420 – 470 MHz)) wave bands. Unlike the frequencies that are below 2MHz, the waves in these particularly higher frequencies travel in a straight line (also known as line of sight signal), and generally can’t travel beyond your horizon. This basically means that distance to your horizon, is the actual maximum range for your 2 way radio; that is without the use of any additional equipment to boost the signals.
VHF waves (about 5 feet wide), are generally longer than the UHF waves, and they’re most commonly used for long range/distance communication. If VHF waves and UHF waves were both transmitted in ideal conditions without any barriers, the VHF waves would travel nearly twice as far; as a general rule, the lower the wave frequency, the greater the distances it can travel.
Key to transmitting the radio waves for a long distance along the VHF waves is keeping the receiver and the transmitting radio above all possible obstructions or interfering objects. The VHF frequencies (because of the length of their waves), cannot transmit through some objects like walls, dense forests and hills. Typically, the transmissions which are sent along VHF waves are received and also sent high above earth’s surface. VHF 2 way radios normally work better when there is a clear line of sight between the receiver and the sender. VHF two way radios are commonly used in marine and aviation communications where signals get sent across the open water bodies or between the ground and the sky. Television and FM radios also use the VHF frequencies where the signals are sent and also received high at the top of towers which are spaced all over the towns, cities and counties. VHF band walkie talkies are also perfect for landscaping, open fields, golf courses and also for outdoors security situations where there is less obstruction.
Though VHF can travel much farther, it doesnât mean it is the better option. Reason is because of the differences between how the VHF and the UHF signals tend to react around buildings or structures. As you will find out below, UHF signals are shorter than VHF, and this is very important when you’re in or around buildings.
UHF doesn’t travel as far as the VHF, but has higher bandwidth occupation. One major advantage of UHF over the VHF, is that the antenna can actually be much smaller when its’ used on the higher frequencies. Sometimes, a base antenna might be needed for radios using VHF frequency, but a small antenna on a radio can be comfortably used for the UHF frequency. Moreover, there are a lot more frequencies which are available when using UHF; this can be very useful in the areas which have a high population density.
The UHF radio waves are much shorter than the VHF radio waves (measuring at about one and half feet); the short length of UHF radio waves typically decreases distances at which the signals can get transmitted. This means that the line of sight between the receiver and the sender is much shorter in length with UHF waves. That being so, you should know that transmission of the UHF waves is usually high enough such that it can penetrate through the building walls and the urban outdoor settings. This is the reason why UHF two way radios usually work best for those who intend to use them in and around buildings and urban areas. A UHF walkie talkie with adequate power and a good sized antenna can reach further into the building, and push through steel, wood, concrete and earth. If you intend to use your 2 way radios exclusively indoors, or maybe indoors and at times outdoors, the the UHF is definitely the best choice. To explain this, let us use an example; assume you’re trying to communicate with someone on the other side of the building and in between there’s a metal wall which has a 3 foot opening. Basically, radio waves can’t pass through metal. However, the UHF wavelength which is about 1 1/2 ft wide, will easily pass through the opening. In contrast, the VHF signal will bounce back since it’s wider than the opening. This shows you that UHF is much better when it comes to navigating through smaller spaces within buildings to reach its’ destination.
When it comes to power, many people tend to think that the power output increases the range, but actually the difference in the range between, say a 25W fixed VHF, and a 5W handheld, is because the fixed mounts the antenna being taller, thus can see farther. When you are trying to increase the range, increasing the height of your antenna is far more effective than increasing the power. Increased power will generally let you push through the static and such other radio traffic much better, but only within a range that’s dictated by the height of the antenna.
In regards to obstacles, there are a lot of things which affect the signal strength of the radio waves. Therefore, it’s important to consider the environment you intend to use your two way radios , and the actual range you need. Naturally, a football stadium will have much less obstructions as compared to a dense forest.
In conclusion, I would like to say that it is never about the radio you purchase, but the frequency, antenna and environment it will be used in. If your two way radio is going to be used mainly outdoors, where you will have a clear line of sight, then the VHF is the ideal choice, however, if the two way radio is going to be used in and around buildings, in urban areas, or in heavily wooded places, then the UHF is the best option.