Radio is one of the oldest technologies in the world. It is used in all the regions of the world with insignificant differences in frequency modulation but the core principle of its technology remains the same. FM radio has become a part of mobile sets today which highlights its high use in our daily lives. However, it is unfortunate to mention that despite having consistent changes in technology all around us in every field and every invention, even in those which came after the radio, like broadcasting has moved from analog to digital in television; it has not had any specific worth mentioning technology up-gradation. The question that pops up now is; why has radio not been upgraded to digital technology? The answer lies in the fact that we use radio spectrum for digital video broadcasting in television. These radio frequency spectra are used to transmit digital multiplex, which is a bundle of various television channels and other services by using 6-8 MHZ of bandwidth. Obviously, in terms of usage, digital broadcasting in television is making more efficient use of radio frequency spectrum as compared to analog broadcasting, which used the same bandwidth to broadcast only one program. This justifies the change in technology. At this important to mention that radio technology can be moved from analog to digital but it will take years to switch and grand scale technological preparations to make it happen. To make analog FM switch to digital broadcasting, there are various aspects of technology that should be catered to. For instance, the new technology should offer great sound quality, excellent reception and wider capacity to broadcast more radio channels which in turn will make more efficient use of radio spectrum. And there are many good quality sound devices, having good reception sound broadcasting technologies available today for instance, T-DAB, DRM+, DVB-T, DRM and DVB-T2; but none is good enough to replace the analog radio broadcasting and match to its performance. FM radio employs 250 kHz bandwidth with spacing of 100 and 200 kHz, varying as per the region. It is because of this changed combination of bandwidth and spacing that switching from analog to digital in radio broadcasting would be difficult. Hence, we have to remain contented with the analog radio transmission unless the sophistication of the technology rises! It should be realized that desiring a change or up-gradation in technology does not only require determination, but there are many other technical aspects, which dictate the ability of technology to get upgraded. Along with huge finances, consistent efforts spread over a long period of time and undying determination, you have to have a reality check. There is no point in getting more sophisticated technology if it makes operations more difficult to handle, rather than making them easy. Same is the case with radio technology; we surely want to have digital broadcasting but with the current level of technology, it will not be wise to switch from analog to digital.
The invention of radio is perhaps one of the most important innovations of the last century. Not only did the radio become a focal point of entertainment, it was a news source, an information source, and even a source of community involvement. Although you may think of radio as being something that started in the 1900’s, you may be surprised to learn that, like so many things in the 20th Century, radio technology was a product of experimentation and discovery in the 1800’s. A dentist in America named Mahlon Loomis exhibited a process called “wireless telegraphy” by connecting two kites to each other without wires, making one move by the force of the other. This was the first time that wireless aerial communication was recorded in history. Radio waves themselves were predicted to exist by James Clerk Maxwell, a physicist from Scotland, in the 1860’s. Later that decade, Heinrich Rudolph Hertz of Germany showed that fast changes in electrical current were able to be transmitted through the air in a way that mimicked heat and light. By the end of the 19th century, Guglielmo Marconi (an inventor from Italy) demonstrated that radio communication was possible. The first radio signal was transmitted and received by Marconi in the year 1895 in Italy. In 1899, he was able to successfully send a wireless transmission straight over the English Channel. In 1902, the first transatlantic radiotelegraph message was sent and received in Newfoundland (sent from England). 1901 was the first year when wireless communication really started gaining momentum. It was set up and used for telegraphs being sent between five Hawaiian Islands that year, as well as used by the Navy for homing pigeons and visual signals. It would be a couple more decades before radio would really begin to be used as a source of entertainment. The first radio news broadcast was sent in August 1920 from a station in Detroit, MI called “8MK.” A station in Buenos Aires broadcast opera music in August 1920. A few months later, in October 1920, Union College in New York started a college radio station, the first ever, in fact. A station called “2ADD” that same month broadcast a few concerts on a Thursday night (that could be heard from up to 100 miles away). It is believed that this was the first entertainment broadcast in the US. In Writtle, England at the Marconi Research Centre in 1922, regular radio broadcasts began airing. In the 1920’s, radio technology was also used to broadcast pictures (early television). FM radio was invented in the 1930s by amateur radio station operators, but FM stereo broadcasting would not become the norm until the 1960’s. Color television went into regular broadcasting in the early 1960’s. TELSTAR (the first radio communication satellite) was set up in 1963. LORAN radio navigation system was the first of its kind, which started in the 1970s, followed by GPS technology launched in 1987. Today, there are countless applications of radio technology, including wireless internet found in routers and wi-fi hotspots. According to predictions by researchers, internet radio is poised to replace both terrestrial (AM/FM) radio and satellite radio by 2020. The advent of Wi-Max or other widespread broadband wireless internet (“internet everywhere”) could impact the proliferation of many new radio wave based and internet based technologies and entertainment sources. Many major US cities are already experimenting with blanketing their entire city with internet access carried by radio frequency.
What kind of music really gets your heart pumping? Do you love to rock out to the latest top 40 music? Or, do you love something a little older – like 70’s music? No matter what your fancy, you can find it all 24/7 with online radio!
What is online radio?
It is live streams of radio stations from around the world. With online radio, you get to listen to real radio stations through your internet connection, instead of over the air. And, online radio is always streaming – so you can listen to your favorite tunes any time of the day or night!
Since online radio is made up of real radio stations from around the world, you get real DJ’s picking the music. It’s far better than listening to playlists that are randomly generated by a computer!
When you listen to online radio, it won’t be any different than if you were listening to the radio station over the air. You will get all of the same commercials, news updates, and traffic reports as the people who are listening locally. But, since your radio signal is coming over the internet, instead of over the air through an antenna, your sound quality will be much better. You won’t have to worry about static, or interference in large buildings, or during thunderstorms.
As an added benefit, online radio is completely free! You don’t have to deal with any download fees or monthly listening limits. You simply get the music you want, without any strings attached.
So, what kind of music gets played on online radio?
Since online radio websites literally have thousands of radio stations to choose from, you can listen to anything you want! If 80’s music or 90’s music makes you nostalgic for your high school days, there are plenty of 80’s music and radio stations to choose from. Or, if you want to travel back in time for a Disco theme party, you can use online radio to find some great 70’s music.
But it’s not just oldie goldies. With online radio, you can also listen to more recent music. There are plenty of radio stations available that play the very latest top 40 music.
No matter what you like, you can listen to it all. Whether you’re at work, at home, or even in the car, you can listen to all of your favorite songs!
If you listen to all of the commercials out there, it seems like you need to spend a fortune to listen to music online. With download fees, royalty fees, and monthly listening limits, listening to your favorite music online can get awfully expensive.
But if you’re looking for a way to listen to all of your favorites and save some money, check out streaming radio!
Streaming radio is just that – radio stations that stream their signals over the internet. With internet radio, you don’t need to be in a particular area or region to hear stations you like. Instead, you can listen to any station, anywhere, just with the click of a mouse.
Since these are all real radio stations, they all offer real DJ’s, real playlists, real programs, real commercials, and real news updates. It’s no different than what you would hear riding around in your car, or at home on your stereo.
And, as an added benefit, internet radio is completely free! When you log onto a streaming radio website, you don’t have to worry about subscribing to anything or finding hidden fees later.
But, internet radio offers a whole lot more than just your favorite music online. With streaming radio, you can also unleash the power of talk radio!
Talk radio shows are usually on AM stations that are incredibly tough to get over the air – meaning it can be difficult to listen to your favorite shows while you’re at work, driving around, or babysitting the kids.
But, with internet radio, the signal comes through your internet connection – instead of over the air – so that you get crystal clear reception. That way, you can listen to virtually any talk radio show in the world, without battling static and interference.
And, if your favorite talk radio show happens to come on right in the middle of your mid-morning conference with the boss, that’s OK, too. Chances are there’s another internet radio station streaming the show, so you can catch it later, when it’s more convenient.
With streaming radio, you get a whole lot more than you get with music downloads… and, it’s a whole lot cheaper!
Walkie talkies are two-way radio communication devices that help reach out to one or more receiver at the same time using radio frequencies. They are hand held devices that are easier to carry out, work without the need for network towers and have no airtime charges.
With improvements in technology, there are several newer functionalities added and newer terms are coined almost every day. It is very important to be aware of the changes that occur around us to be updated. This becomes more important when we decide to invest on walkie talkie devices for either commercial or personal use. The description may look Greek and Chinese if we do not know what it actually means. This article will explain few common terminologies and abbreviations used in the walkie talkie communications globally. Have a look and the next time you have a conversation about these handy radios, there is no need to pretend to be able to understand!
UHF and VHF
This is something we hear very commonly in a lot of technology descriptions. UHF stands for Ultra High Frequencies and VHF stands for Very High Frequencies. Wireless devices with a UHF spectrum have a shorter wavelength and are hence good ones to use in an indoor environment or a rugged terrain. These waves can easily find way through interferences and hence give better clarity.
Walkie talkies with VHF spectrums can transmit and cover a much greater area if terrain conditions are ideal and there are less or no interferences between the transmitter and the receiver. They are preferred for outdoor communication.
General Mobile Radio Service is a licensed radio service that use specified channels for transmission and reception. They are generally used for short distance two way communication, are used for commercial and professional requirements and are more expensive than the normal personal use walkie talkies available at all online stores for cheaper prices. Individuals need to be licensed to use these products and are technically much better in quality and features.
Personal mobile radios are license free options of walkie talkies that can be used for personal use in a lot of countries. The range of such devices is limited and the frequency spectrum in which they can operate is different in each country. They are cheaper versions of the licensed walkie talkies and can be perfect solutions for communications that are not going to exceed line of sight distances.
As the name suggests they are professional top class devices designed with precision for usage in the marine. They offer private communication and work on government regulated channels. They connect to all stations in all weather conditions and offer high class audio reception even when at the middle of the sea. All these devices are licensed and it is illegal in most places to use this frequency range without proper authorization
Aero band or Air band is a frequency channel allocated to the aviation industry. They are mostly in the VHF frequency ranges and the walkie talkies used here are top class in features and offer excellent connectivity and air traffic controls. Similar to the marine band these devices also need to be licensed and it is illegal in most places to use this frequency range without proper authorization.
The world of consumer electronics has changed a lot over the decades, be it the television, music players, mobile phones or anything. Since, technologists evolve something new every time and forge the idea to a dashing gadget that impresses the masses. Let’s talk about the radio communication which has evolved in the span of a century and now it has got variety of applications starting from telephony, astronomy to broadcasting. People coming of age reminisce the old times when the old Radio receiver was used to hear the songs.
At the present time, the radio technology too has transformed and so has the receivers gone under a transformation. Brionvega was a prominent name when it entered the consumer electronics industry in 1945 and whose television set of Cubo got quite famous during end of 60s. As of the now the new Brionvega Radio Cubo series are doing the rounds for its impeccable attributes.
Brionvega TS 522
Different aspects of Cubo Radio Receivers
There are different models under this series which have some varying features, so let’s check out what’s in them.
Appearance: Like its name, the Brionvega Radio Cubo receivers look like the cubes in a portable design unlike others and catch attention of anyone in just one glimpse. The Cubo family comprises mostly of four models which are different from each other in the matters of their features but look alike when viewed from outside. Moreover, these receivers also come in vibrant colours that are truly astonishing.
Features: Coming on to the features of those models. There is clock radio, TS 525 and two models of TS 522. All of them differ in their technical specifications. The clock radio is named such because of its clock functions along with alarms. In the Brionvega TS 522 it has got a programmable memory for FM and AM channels. It also includes automatic tuning and alarm clock. The variant TS 522 D+ comes with a remote control, DAB+ and others.
Performance: All of the models are excellent in their performance as they are specially designed for listening music. The Brionvega TS 522 has dual modes of powering itself through mains and batteries. While the TS 522 D+ model features an amazing loudspeaker and powerful amplifier, the TS 525 offers a docking station for iPhone and iPad.
Availability: These Italian brand electronics are available at various online sites but may have varying rates depending on the seller and location. Buyers will need to check at different online shopping portals offering these products.
Price: Depending on their features, the Brionvega TS 522 and other models have a varying price list. Nevertheless, buyers will find some sites offering discounts on them. It just needs a little browsing and searching to pick those online stores.
These radios with multiple features especially like that of Bluetooth and Wi-Fi has truly transformed the way and given a device of innovation that all would like to have in home and enjoy the music. Customers can also find the variety of products of branded Italian names at online stores.
The Digital Two Way Radios has earned ample of popularity in the market of wireless communication configuration. It is widely used as a communication device in many sectors including residential, commercial, and government. The two way radio system is popularly known because of its ability to initiate and receive instant call, receive and transmit voice signal, data, and other additional services, two way radio users could have bi-directional communication even without the complex infrastructure. The Two Way PMR Radio is highly designed and consisted of many features that can certainly meet the demands of many people or employee. This is a good example of Trunking Systems that allows the user to have conversations with multiple users without changing a radio frequency.
The best of all the features about the two way radio is its portability. It is easy to carry and can be easily placed in the pouch that can be clipped in the belts, lapels of shirt, etc. The Two Way DMR Radio with wireless repeaters, offer continuous communication service without any network intermittent problem. The Two Way Digital Radios Mobile provides outstanding voice quality and maintained it for greater distance with the use of Narrowband Codecs technology.
Advantages of using a Two Way pure digital radio are mentioned below
Swift communication: Digital Two Way Radios are known for instant communication. It comes with €Push To Talk€ button which on pressing offers immediate communication. This is possible because of the use of technology called Instant Call Set-Up time that is already programmed in the Two Way Digital Radio. This feature makes the people more pleasing to purchase the Two Way Digital Radio.
€Group Call€ service: The Two Way DMR Radio comes with the €Group Call€ facility. It allows the users to have a conversation with multiple groups using the Two Way DMR Radio. Beside this, it allows the users living in the same area to perform group communication without changing the radio frequency channel.
In Military service: The Digital Two Way Radios play a crucial role in the military services. It has been proved useful to carry out any operation in the battlefield or against the terrorist activity. Moreover, it offers an outstanding performance and provides continuous communication service in the war taking place at a higher altitude.
In Emergency situations: We all know that the natural disaster comes with no alarming. During the natural disasters like earthquake, flood, storm, etc. most of the communication systems including landlines and cellular links become operationally dormant. Thus, it becomes very much difficult to know the whereabouts and safety of children, family member, etc. who has gone outside. But in such a situation, the Walkie Talkies with charged batteries play a very important role and help you to stay connected with children and relatives who are using the same 2 Way Radio.
The 2 Way Radio has a wide application in many fields including government, private, residential, etc. and therefore it is the most reliable and popular wireless communication system of the present generation.
Two-way radios, much more generally known as walkie-talkies, had been initially created for your Canadian govt during the 2nd World War by Canadian Donald L. Hings. Comparable designs had been designed for other armed forces, and after the war, two-way radios disperse to public security and ultimately industrial and jobsite operate.
Key characteristics include a half-duplex channel, exactly where only a single radio transmits at a time, even though any number can listen, and a push-to-talk change that begins transmission. Common two-way radios resemble a phone handset, possibly slightly greater but nonetheless a single device, by having an antenna sticking out of the leading. Exactly where a phone’s earpiece is only loud adequate to become noticed by the consumer, a two-way radio’s built-in speaker could be heard from the consumer and these in his immediate vicinity. Hand-held transceivers may be utilised to communicate in between one another, or to vehicle-mounted or base stations.
Two-way radios are widely used in any environment where transportable radio communications are needed, which includes enterprise, public safety, outdoor recreation, and also the like, and gadgets are accessible at several value points from low-cost analogue models marketed as toys up to ruggedized (i.e. waterproof or intrinsically secure) analogue and electronic units for use on boats or perhaps in hefty business.
Most private two-way radios sold are intended to operate in UHF allocations, and therefore are intended to be extremely compact, with buttons for modifying channels as well as other options around the experience with the radio as well as a short, set antenna.
In addition to land mobile use, two-way radios styles can also be utilized for maritime VHF and aviation communications, especially on smaller sized boats and plane where mounting a set radio may well be impractical or high-priced. Frequently such models can have switches to supply fast access to emergency and details channels. Two-way radios, because of rising utilization of miniaturized consumer electronics, might be created very modest, with some individual two-way UHF radio designs being smaller sized than the usual pack of cigarettes.
There are numerous add-ons available for two-way radios including rechargeable batteries, drop in rechargers, multi-unit rechargers for charging as numerous as six units at any given time, and an audio accessory jack that may be utilised for headsets or Speaker Mic [http://www.cosmwireless.com/speaker-mics].
When headsets are used with voice activation (VOX) ability the consumer can talk with arms free operation. Several varieties of audio accessories are readily available like speaker microphone that clip near the ear, security type earpieces having a pendant push-to-talk swap and a built-in microphone, a headset that has a push-to-talk swap earbud that seems much more like what you would uncover on an music player, or a single-ear lightweight behind-the-head headset with boom microphone and pendant push-to-talk swap related to that worn by a phone call center agent.
Two-way radios have surely appear alongside way, and they’re no extended restricted to kid’s perform. In fact, two-way radios now provide considerable range, comfort and robust technology which make them best for maintaining your children secure. At the purchasing middle, when traveling, hiking, skiing or some other time where length may possibly individual you, two-way radios bridge the gap.
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1. What is Satellite Radio?
Two satellite radio companies, XM Radio and Sirius Radio, operate over North America. Each provides well over a hundred channels of 24-hour-a-day content, mostly music, news, sports and talk shows.
Both systems cover Alaska, Canada, the continental U.S.A. and northern Mexico, but not Hawaii.
Satellite radio is beamed down from communications satellites to receiving antennas, as in satellite television; similarly, the receiving antenna must be pointed toward the satellite. At only about two inches across, a radio antenna is much smaller than a TV dish.
To listen to satellite radio, you buy a receiver, and then pay a subscription fee to get an activation code, which enables your receiver to decode the digitalized content.
Subscription fees are around $13 per month — less with longer commitments. XM Radio charges a $10, one-time activation fee.
Choosing a satellite radio service is not simple, so the more you learn about the two services, the more satisfied you will be with your decision. It comes down to personal choice because, to the user, XM and Sirius are quite similar in equipment, pricing and — most importantly — content.
2. Satellite Radio Receivers
Satellite radio receivers are marketed for mobile and/or home use. People often carry them between home and auto, as most receivers are the size of a hand-held calculator. A receiver must be nestled into a docking device in order to work. Called a car kit or a home kit, the dock supplies power to the unit and provides connections for antenna and output devices. These tiny satellite receivers have no built-in speakers.
Most models are designed to slip into car kits, home kits, or boom boxes. A huge market is emerging for pocket radios with earphones, and which double as MP3 players.
Both brands contract with sound system manufacturers to build home tuners with satellite receiving circuitry. You have only to hook up the satellite antenna and pay your subscription fee.
Automobile manufacturers can now supply pre-installed, in-car satellite radios. XM Radio partners mainly with General Motors, Honda and Suzuki. Sirius Radio has Ford, Chrysler, and VW as partners.
3. Choosing a Satellite Radio Receiver
First of all, XM and Sirius equipment are not compatible. Each employs its own, proprietary electronics and software, so neither receiver can work with the competing system.
Brand-for-brand, similar products are priced competitively. Prices tend to drop as newer models arrive. Dealers regularly hold sales, and generally keep prices between the two brands competitive. Deeper discounts are often found at the manufacturers’ websites.
XM have existed longer, and have published studies showing that their sound reproduction is superior.
Sirius hosts the most helpful website with more product information including online user and installation manuals.
New buyers, though, are seldom able to make decisions from such sales information alone.
Talk, rather, with sales people and listen to systems in different stores. Ask their installers for advice, too.
Although both companies offer free trial periods, watch out! You’ll need to buy a receiver and docking kit (a $100 outlay) before you can “try it for free”. Are you willing to do that… twice?
4. Satellite Radio Programming
XM Radio boasts over 170 channels. Sirius Radio carries over 130 channels. Simply comparing numbers serves little purpose, however.
Do you absolutely need the 15 sports channels on XM, or could you live with the 12 from Sirius? Choose carefully here: competing sports channels differ greatly in what they cover!
XM sends about 70 commercial-free music channels, while Sirius sends about 30. Sirius claims 23 rock stations, yet includes reggae and hip-hop in that category; XM lists 14 rock stations and 6 separately listed hip-hop channels.
While most receivers have 30 channel presets, can you recall where you have stored your 30 favorite channels? Would you even have 30 favorites? How many of those are you likely to tune into on your drive home?
5. The Installation Challenge
The easiest installation by far is with the home kit: the instructions show how to locate your antenna for strong, clear reception using the built-in signal strength meter.
The receiver can be situated at a distance, thanks to the long antenna wire (and optional extensions). For best sound, plug the receiver directly into your stereo with an audio cable.
More versatile is the XM Radio’s Wireless FM Modulator (or Sirius Radio’s FM Frequency) function, which re-broadcasts the satellite channel out to any FM radio in your home. The instruction manual explains this clearly, and it is not especially difficult to set up.
Car installations are more challenging! The easiest part is positioning the magnetic antenna onto your car roof.
Then, if all goes well, the FM re-broadcasting antenna can push enough signal from your receiver (inside the car) to your regular car antenna (somewhere on the outside, wherever the auto designers thought appropriate).
For best listening quality use an audio cable directly between the satellite receiver and your car radio AUDIO IN. If that socket is hidden behind the dashboard, you may want skilled help.
Sirius Radio offers many more optional devices for improving receiver-to-car-antenna transmission within the tricky environment of an automobile.
Prudent purchasers may prefer to let the dealer do the installation.
Satellite radio reception is not without its challenges. Yet, with nearly 14 million receivers in operation, satellite radio is here to stay. As with satellite television, not everybody wants one. But those who do have them love them.
News Update: Xm Radio & Sirius Radio to Merge?
The recent announcement about the two North American satellite radio companies’ merger plans has certainly thrown plenty of excitement into the picture. But don’t expect to see any changes for at least a year or two.
By the time the House Judiciary Committee is finished their oversight, and then all the other regulatory committees in the alphabet (S.E.C., F.C.C., J.O.C., et. al.) have their say, nothing will change.
Neither do the two companies have a clue yet about how they will integrate their two technologies. They say that they plan to maintain current services way out into the future. One thing for sure, they do not want to scare away any customers, new or old!
If you have been planning on joining the move to satellite radio, go ahead; you might as well enjoy it. Because, truthfully, nobody really knows exactly how or when this will all shake out. It’s highly unlikely that you will see any downgrading of programming, whichever company you choose. Big incentives may even be forthcoming, just to keep potential customers confident… and buying!
For the next year or two, nothing will change at all – and beyond that, you can be certain that the new, combined XM/Sirius entity will do everything in its power to hang on to every single subscriber.