Archive for December, 2008

Staying connected is the keyword of today’s living style. It is extremely important to stay in touch with your family, friends and employees. The present day hectic lifestyles do not give people the time to be in constant touch with their families and enquire about their well-being. In such a scenario, two way radios are the perfect gadgets that can solve a family’s connectivity woes.

The concept of two way radios is not very new. They are devices that can receive as well as transmit content. They have been an integral and crucial communication device in the defence set up, like the army, navy and air force, since a very long time. Much before the introduction of the pager and the mobile phone, the walkie talkie, as it is commonly known, was one of the first gadgets that functioned on wireless technology.

Since, in most cases, both parents are pursuing a full time professional career, it is imperative to keep a track of the activities and whereabouts of the children from the workplace itself. Two way radios have slowly and gradually emerged as the most reliable gadget that can help parents keep a protective and watchful eye over their children. They are also immensely useful in case there is an ill relative who may require medical attention at any point of time.

These radios are very simple devices and easy and uncomplicated to use as well. Some are so simple that they can be used easily by children. Mostly, two way radios come with a push button technique, which is basically used to activate the transmitter so that conversation can be made possible. One very important fact that has to be kept in mind is that in order to establish connection, the frequency of two walkie talkies should match.

Two way radios are cheaper than mobiles, since one does not have to pay for each conversation. The other advantage is that they are now available in sleeker models and better features. The price also falls in the easily affordable range with lots of companies; major mobile manufacturers have begun developing these devices owing to their increasing popularity and utility.

Satellite radio is the hottest, new way to stream music to its listeners. With a low monthly fee, you can enjoy commercial-free broadcasting that is heard nearly anywhere. Enjoy cd quality sound with minimal grey areas. National Stations allow you to listen to the same great channel no matter how far away from the big city you may be. They also offer hundreds of stations to suit your needs. So whether you like oldies, rock, talk, hip-hop, or sports, they have the station that you desire.

Will it fit?

Universal Tuners and Satellite Integration products make it possible for you to enjoy satellite radio no matter what vehicle you own. Improvements in technology have made dash mount units smaller and easier to operate. Antennas are now about the size of a matchbook and can easily mount inside on your dash or outside on your roof without the eyesore of the once larger satellite antenna.

Most aftermarket radios are now equipped to work as a Satellite Receiver so no dash mount controller is needed. Look for the SAT READY logo on your CD receiver to see if a tuner is available. SAT READY units display channel number and song titles, and allow you to scroll through channels like a standard radio station.

OEM integration is also available for select Vehicles. Manufacturers like PACC and Directed make tuners that will adapt to your factory radio to function as if it was sold with the Vehicle. No Dash alteration is necessary, units plug directly into factory harness without splicing so there is no worry about voiding factory warranties. Channel information displays on factory radio just like a regular radio station.

Sirius? Or FM?

Sirius
$12.95/mo Over 130 channels of commercial free music and talk radio. Home of Howard Stern, NFL and NASCAR premium channels such as Playboy radio are also available for an additional charge.

XM
$12.95/mo 170 Channels of digital music. XM is proud to Host MLB, NHL, College games, and PGA tour. For the business man they offer breaking news reports from channels such as CSPAN, CNN, CNBC, and BBC.

What’s new with Satellite radio?

Both satellite companies now offer NavTraffic updates. If you have a built-in navigation unit, you can now get local traffic updates in real-time. For just a low monthly fee your Navigation unit will allow you to Navigate around traffic and bad weather conditions.

Not very many people are familiar with HD radio so I will first define it and it’s possibilities. The number of people with a HD radio is very small. Few people even know what HD stands for. Most simply think that it is high definition.

The original definition was hybrid digital. Some have said that it is now a brand name for the inventing company ( iBiquity Digital Corp.). The common use seems to be simply HD radio and defines the digital radio that captures the HD signals. The use seems to be more of a brand than anything else.

The radio stations like it because they can get many more broadcasting stations. This is part of the digital revolution that is occurring in the world today. The digital signal is compressed and bundled with the following signals: AM , FM, HD, HD2. The AM and FM signals are analog and digital. These are broadcast as a bundle but it requires the special HD radio to receive the digital and HD signals.

When or if the digital signal is lost, the radio reverts back to the analog signal. The AM digital signal loses its static and buzz and produces a sound that is very much improved over the analog signal. The FM digital signal produces a sound that is very close to CD quality. The question most people ask is are the people willing to pay the high price for a HD radio? These cost between $100 and $600 and are made for the table top or installed in a car.

The public likes their mp3’s and small portable radios. One can get a portable AM/FM for $15. The cost should come down if many people get the HD radios. Many or most NPR stations are going to the HD broadcast format. Most of the large stations are also changing to the new format. The cost is reasonable to convert to this format and the user fees to iBiquity must be reasonable as most stations are changing.

iBiquity might have improved the roll out by forgoing any fees until the usage was very high. The industry must have confidence in the system though since so many are changing to this format. The critics say that the technology has not been proven and may not work. Supporters say how can one loose by improving the sound to digital everyone wins.

This is the most improvement in radio sound since the introduction of FM stereo nearly fifty years ago. The government has forced TV stations to go digital. This also allows for high definition television for even better reception.. The government is not forcing radio to go digital but they are doing it on their own to improve reception. My opinion is that the hardware receivers will need many improvements before everyone is going to flock to the electronics store to buy their own. The size and features along with the price needs improving.

The technology for HD radio is here and looks great on paper. Will people turn off their satellite subscription and mp3’s and Iphones to go to HD radio? It could be a slow process but when it really catches on, it could take off.. The world is moving much faster in the digital world than it did in the slow days of AM and FM.

We have different types of radio transmitters and they can be classified according to the type of modulation used, according to the service involved.

According to the type of modulation used radio transmitters can be further classified into three types namely Amplitude modulation, Frequency modulation and Pulse modulation techniques. In Amplitude modulation transmitters the modulating signals modulates the carrier. Such transmitters are used for the radio broadcast on long, medium and short waves, radio telephony on short waves, television picture broadcast on very short waves or ultra short waves. In a frequency modulation transmitter the signal voltage frequency modulates the carrier. Such transmitters are used for radio broadcast in the very high frequency and ultra high frequency range, television sound broadcast and radio communication. In a pulse modulation transmitter the signal voltage alters some characteristic of the pulses. These characteristics of the pulses altered on modulation may be pulse width, pulse position, pulse amplitude, pulse frequency or the pulse code.

According to the type of service involved the radio transmitters can be classified differently like Radio broadcast transmitters. These transmitters are designed for transmitting speeches, talks, music, dramas, commentaries and news etc. for the information and recreation of people. The electromagnetic energy is so radiated from the transmitting antenna that the largest number of people may be able to receive the broadcast with the help their of radio receiver. These broadcast transmitters may be either amplitude modulated or frequency modulated. The amplitude modulated transmitters may be either amplitude modulated or frequency modulated. The amplitude modulated transmitters operate on long waves, medium waves and short waves and radiate carrier power as low as about one kilo watt and as high as one hundred kilo watt or more. The frequency modulated broadcast transmitters operate on very short waves or on ultra short waves and radiate carrier power of the order of one hundred kilo watts or so.

The radio telephone transmitters are designed for transmitting telephone signals over long distance by radio means. A radio telephone transmitter uses certain special devices as volume compressors, privacy devices, peak limiters etc. The transmitting antenna is designed for beaming the electromagnetic energy into a narrow beam directed toward the distant receiving antenna. Smaller amount of power is thus required.

A radio telegraph transmitter transmits telegraph signals from one radio station to another radio station. It may use either amplitude modulation or frequency modulation. When point to point radio communication is involved, the transmitting antennas are highly directive so that the electromagnetic energy is beamed into a narrow beam directed towards the receiving antenna at the receiving radio station. The television broadcast requires two transmitters one for transmission of picture and other for transmission of sound.

Before embarking on to write about the features and advantages of two way radios, it would not be out of place to first explain what exactly are two way radios. Well, they can be termed as transceivers that possess the capability to transmit and receive voice signals. It has a push to talk button that gets the device activated. Also popular as walkie-talkies, this hand held two-way device is available in mobile and stationery base configuration. It would be interesting to know that earlier this device was used exclusively by defence forces and police, though it is now increasingly finding favour with the civilian population.

Increased use of these two way radios have led to more and more innovation being introduced into the device. New models are being launched and every new model include some new feature, which has increased its popularity manifold. Two way radios include several channels as well, and the number of channels available depend on the type of radio being used. For example, there are 23 channels in GMRS (General Mobile Radio Service) and 14 in FRS (Family Radio Service).

There are several other features as well that go a long way in making two way radios popular. Their batteries, for example, are extremely durable. Also, there are different sets for different people. People who use these radios abundantly should go in for Nickel Metal Hydride or Nickel Cadmium batteries that can be recharged. Where as people who use it sparingly should opt for AA and AAA alkaline batteries. Then, two way radios can be easily carried any where. These days, many radios provide their users with weather forecast by meteorological department as well.

With so many outstanding features, it rarely should come as a surprise to anyone that two way radios have become so popular amongst the masses today.

Alternatively being called as walkie-talkies and even dispatch radios, two way radios are hand held mobile communication devices, which evolved out of the radio transmitters and receivers used by naval and army units in the early 20th century. As the world moved ahead in style and things progressed in every areas, the bulky radio equipments gave way to small and effective portable communication devices.

Coming out of the closet, these communication devices have gone through some pretty commendable research and development processes. Two way radios can be classified into various categories based on their abilities and the features they contain. But, mostly these wireless communication devices differ on the basis of their radio signal channels.

American telecommunications legend Motorola has attained phenomenal success in the field of two way radios courtesy of a wide variety of these hand held devices. Some of the radios even had push to talk buttons to get connected right away. With their efficiency and accessibility, these devices can actually sound as better options than mobile phones in some instances.

Two way radios of the present times have improvised much on their abilities as more and more manufacturers have applied their technology to capitalise on the rising popularity of these devices. The obsolete two way radios worked on the ordinary simplex mode, which simply allowed transmission of signals by a station as the frequency was used by all the users. This moved on to the full duplex mode, which allowed transmission and reception at the same time.

Walkie-talkies are tools that enable verbal communication with other people using the same equipment. Two way radios can be said to be the advanced version of walkie-talkies and function the same way as the later does. Describing it straight, two way radio is like a radio that transmits as well as receives voice contents, unlike a broadcast receiver, which only receives the voice content.

Usually, there are two types of two way radios available today. The first operates on Family Radio Service (FRS) while the second operates on General Mobile Radio Service (GMRS). FRS radios are for personal usage and are quite inexpensive. If weather is favourable, it can transmit signals up to a maximum distance of 2 miles. To own as well as use it, one doesn’t need a license. GMRS radios are, on the other hand more expensive than FRS, and can transmit signals to a maximum distance of up to 10 miles. These radios transmit at pretty high power levels and require a GMRS license to be operated.

Gradually being used in diverse fields, two way radios have several features attached with them. Such radios give users an option to use private code to protect the system from being caught by any other radio users. Some of the expensive radios sets have the system of reduced eavesdropping, which blocks your conversation with companions from being eavesdropped upon by other radio users. These radios have different ways of getting call alerts to be notified if a new message is on its way.

The radios of today are being equipped with a weather channel, which gives you the latest weather information. Little left to wonder, some highly efficient two way radios are endowed with features like barometer, thermometer, digital compass, AM/FM radio and GPS navigation unit. This handheld and easy-to-carry gadget is becoming much helpful in facilitating our lives to a great extent.

Do you know why two way business radios are such a craze nowadays? It is mainly because they are a much cheaper means of wireless connectivity and, at the same time, ideal for use in a lot of places. These radios even remain active in certain places where mobile phones prove to be ineffective. It will take a large space to mention all the places where these radios can be used.

So, here the name of few places is mentioned where two way radios can be effectively used. Construction site is one of the places where these radios are frequently used. Restaurants, Government Offices, and Hospitals are some of the other places where people can stay connected with each other with the help of two way radios. Theatre, Manufacturing areas, and Campus also witness large scale use of these radios.

Two way radios are randomly used in Military applications. In fact, the initial use of these radios was restricted to the police only. In course of time, the radios have got their access to the public life and caught up in popularity very fast. Otherwise known as walkie talkies, these radios are ideal for use in many outdoor activities as well.

From Hunting to Skiing, Driving to Biking: in all these outdoor activities two way radios are frequently used. During the time of Vacationing, at School, in Sports: these radios have their part to play everywhere. Thus, this easily portable, handheld device is contributing a lot to keep people connected in so many places and in so many ways.

However, two way radios have their limitations. They do not work outside a certain range. In this case, they are less advantageous than a mobile phone. But when you consider the cost, the radios certainly get an edge over the phones. You can get non-stop service from the radios just after buying them. Whereas, mobile phones cost you high amount initially and necessitates you to pay every time you use them. In this case, the radios appear to be a far better option.

Unlike the traditional radios that let you listen to music, news and other programmes (both entertaining and informative), two way radios help you stay connected while on move. In some ways, it can be compared to a mobile phone. Both these devices provide you wireless connectivity and allows you be in touch with others even when you are moving from here to there.

However, it will not be appropriate to say that two way radios are equally powerful as mobile phones. While the latter has no boundary as far as the coverage area is concerned, the former covers only a specific area. The good thing about the radios is that they are much cheaper than their counterparts. Moreover, they remain active in certain places like dense forests where mobile phones have no network.

The cost part is certainly the best thing about two way radios. There are no monthly rentals, nor is there any per minute call charge. Once you purchase the device, it will continue to provide non-stop service. Thus, the device has a clear edge over the mobile phone. Regarding the coverage capability, both have limitations. If the radios do not have world wide connectivity, the mobile phones also does not work in remote areas.

The best use of two way radios are seen in situations like hunting in forests, taking a road trip together and shopping in malls with all the members of the family. In all these situations, there is a chance that members of the group get separated from each other. If they have a two radio in their hands, they can easily stay connected with each other.

In the same way, when someone out in a trip with his/her partner and get separated from each other, two way radios will keep them connected. If your favourite pastime is hunting and you go with your friends or partners, the best way to be in touch with each other are these radios.

Two way radios are useful in a lot of situations and hence they are very popular. By virtue of their ubiquitous usefulness, this device has got its access in so many household in UK. Otherwise known as walkie talkies, this type of radio is an excellent way to stay in touch while hunting or camping. This device is also used by those who are taking separate cars on a road trip.

Even, two way radios can be of paramount help when you take your family to an amusement park or to a mall! They are also successfully used in business organisations. These radios can be used in places where employees are often on the move, yet they need to stay in touch with others. The best thing about these radios is that there are no per-minute charges like phones.

It is because of their cost-effective nature, two way radios are considered as a handy alternative to mobile phones in various situations. Moreover, they prove to be a precious possession in certain places where the network of mobile phones does not reach. This happens mostly in cases of hunting. Chasing a prey when someone goes deep inside a forest, he runs out of the coverage area of his mobile phone.

Under such circumstances, the service of two way monitors seems to be priceless. To meet the need of rising demand of these radios, various manufacturers are producing them in bulks. However, the ones that receive kudos from consumers and expert reviewers alike are made by Motorola. Users and reviewers are impressed by the reception, range and features of the radios made by this company.

With 14 channels, 500 Mw of full power, voice-activation (VOX) capability, and synthesized voice verification, two way radios from Motorola are among the choicest few. They include a “push to talk” button that’s easy for kids to use. The most expensive of these baby monitors include a compass, clock, stopwatch, thermometer and barometer.