The black and white television era has been gone eons back. One hundred plus colours is just not enough nowadays. When it comes to TV, the minimum is high but meeting that is quite simple. I just had to purchase my HDTV Television and now it hasn’t not only become a part but is the center of my home entertainment system.

Surpass the Standards

The Standard-Definition Television (SDTV) is a thing of the past. That Blu-Ray player you purchased will not quite work well unless you plug it in with a HDTV Television. Nor will you be able to enjoy watching your favorite channel that just recently upgraded into broadcasting in HD if you stick with an SDTV. The colors are just so colourful and alive that it feels like I am taking part myself in what I am watching. Now I know and have seen for myself that there are in reality other shades of blue aside from light, sky, royal, navy, dark, sea, and constantly so on.

Three Senses Left

HDTV TV has already taken care of the visual and the acoustic sensory kick. Even without plugging the HDTV TV into a new sound system, the sounds are as grand as the footage are. Heard the difference between a door closing and another door closing some feet apart? I have, thanks to the HDTV Television.

On to the Future

Now if only I could create the technology which is going to enable me to touch, smell and taste the things on my TV. It might nearly be like literally being one the cast or crew of the show!

Most people are now so much into Digital TV that it’s very difficult for anyone who has tested Digital TV to do without it. What better way to relax with your loved ones than by choosing from hundreds of channels that are available with Digital TV. Lots of reasons have been given why most prefer Digital TV to Cable TV today.

If you are one that always like information, then the Digital TV offers you not just access to all the information you need, but also access to the right channels. Lots of channels exist on Digital TV to give you a wonderful viewing experience. Children no longer have to be restricted to just the few channels they were watching because with Digital TV, they have the option of watching as many children channels as they can.

It doesn’t cost an arm and a foot to own Digital TV subscription. Users of Digital TV pay less than users of Cable TV. This is one of the points that most people just can’t deal with. Even though Digital TV costs much less, it gives more in terms of channel options, etc.

As you can see, it just doesn’t make any iota of sense to keep using Cable TV when Digital TV is much more powerful, yet more affordable. Digital TV gives users basically any category of channels/programs to choose from. Digital TV can’t be compared to any other at the moment — with their comedy channels, movie channels, information channels, music channels, etc, you have a lot to choose from. This is very much unlike your usual Cable TV subscription where you get less variety.

Having discussed the impact that Digital TV has had on our lives how does this impact upon the Hitachi 32LD9700 Flat Screen Digital TV.

The 32LD9700 is a 32in LCD TV and these TV’s at present can be found in the region of 1000 pounds sterling or 2000 US dollars. The resolution of the screen is 1366 X 768 and with regards to being HD Ready the answer is yes. The Hitachi has 3 (2 RGB) scarts and the type and number of Multimedia interfaces the 32LD9700 uses is HDMI and 2. The type of Tuner for this TV is Analogue and Digital and the Hitachi is available from a wide variety of outlets.

So how would we rate the Hitachi 32LD9700?

First up, we would look at the picture quality and our score here would be 10, and closely tied in to the picture quality is the sound quality and our score for this would be 10. Another useful aspect to review is the availability and number of relevant connections and our score here would be 8. If we take a look at the overall “featureability” our score would be 10 and for ease of use and overall value for money we would give it, 10 and 10 respectively.

Finally our overall opinion would be WOW what can you say but that this is one of those TV’s that excel in almost every thing it is supposed to do. Described as a “Superb All-rounder”, there is not much that this TV does not achieve. If you can get your hands on one of these then go for it.

It is extremely unlikely given the variety and range of makes and models available that you will not be able to find something to match your tastes or budget. The choice, as they say, is completely down to you to decide whether to stay at the forefront of what are rapidly changing technologies and fashion or to remain part of the safer but perhaps better developed mainstream. No matter what rout you take we hope that after reading this article you should be more informed as to the correct choice with which to take.

Please bear in mind the prices that are quoted in this article and take note that they are there purely for illustration and though valid at the time of the writing of the article may vary from time to time and also depending on the time of year when you make your purchase.

If you are a corporation in search of disaster recovery networking solutions, a first responder who may need connectivity from anywhere at any time, or you simply need broadband internet connectivity from remote locations you have probably considered that satellite may be your only reliable option. In the midst of a disaster many businesses and first responders may find themselves without communications of any kind due to the loss of terrestrial infrastructures, or the lack of it ever existing in the first place.

The problem is that most business professionals and emergency service workers do not have a complete understanding of the satellite business and the idiosyncrasies of communications via satellite, and why should they? Satellite communications is not their profession. In the quest for a satellite internet service provider there are certain questions you should be prepared to ask before you get locked into a contract for services that won’t satisfy your needs:

1) Do you have Non pre-emptible satellite space segment?

Satellite operators such as SES Americom, Intelsat among others lease space segment to satellite service providers. There are different levels of protection available in varying price ranges. Many service providers will opt to contract for pre-emptible space segment because it’s much less expensive and they can make larger profit margins which they may or may not pass on to their end users. Pre-emptible space segment gives the satellite operator the ability to deny access to the satellite for the service provider in the event of an on board equipment failure, or to make room for a service provider who is willing to pay the Non pre-emptible premium.

During large scale disasters such as the hurricanes in the Gulf States in 2005 many pre-emptible segments of satellite space were cleared to make room for government requests for satellite service leaving other service providers with no access. If you are considering contracting for service for disaster recovery applications it is highly recommended that you find service providers that guarantee that they have contracted for Non pre-emptible space segment. The service provider should be able to provide you with evidence of their service agreement with the operators if you ask. You may pay a little more each month for your non pre-emptible service, but at least it will be available when you most need it.

2) What is your “Over Subscription” or “Contention Ratio”?

Most satellite service providers who are providing Internet services are operating systems that use TDMA (Time Division Multiple Access) based systems. A TDMA system is normally controlled by a central hub location which will command the remote units in the field to transmit their data when the hub is ready to receive it. This allows for many remote units to share the same slice of bandwidth improving the overall efficiency of the system. The transmissions from the remote units are sequenced at a very high rate, many times per second, which makes the service appear to be continuous.

However, the more units that are added to the system, the slower the service will be. A true enterprise level operator will never allow their contention ratio to exceed 20:1 or essentially 20 terminals per segment of bandwidth. Many operators that offer lower grade services will over subscribe their systems as high as 40, 80, 120:1 or more. Some operators may not be willing disclose this information to their end users. If a service provider will not tell you their contention ratio, you might consider looking elsewhere as their ratios are likely to be high. This will directly affect the quality of the service you receive. Enterprise level operators with contention ratios of 20:1 or less will charge more for their services since they have fewer users for their contracted space segment. But, you get what you pay for.

3) What is your system Latency, and does your hardware or software include TCP/IP acceleration?

Any IP transport platform will have a certain amount of latency that is inherent to the structure of the system. Latency is normally measured by how long it takes for a TCP/IP “Ping” to be sent to a server on the other side of the transport link and be returned back over the link to the point of origin. Satellite systems, due to the physics involved will have much higher latency figures than any terrestrial link. Data is transmitted to the satellite at the speed of light, or 186,000 miles per second. The satellite is located 22,223 miles above the equator.

For a ping to make its round trip it must travel up to the satellite, back to earth to the server, up to the satellite again and back to the origination point. This is a round trip is approximately 88,892 miles. When calculated with the speed of light, in a perfect world the round trip will take about 448 milliseconds. When you add in coding delays and processing delays you can increase that figure by 100 to 250 milliseconds. On an efficient system, a round trip ping should take between 550 and 700 milliseconds (225 ms one way in each direction).

Many lower grade systems on the market today will actually return ping times of 1200 milliseconds or greater which is too slow to allow for functionality of certain software applications. Some system operators have added TCP/IP acceleration products to their equipment. This can either be a hardware or software solution. Acceleration of TCP/IP does not speed up the actual transmission as it is already being transmitted at the highest speed possible, the speed of light. The acceleration is achieved by modifying the TCP protocol in ways that allow for more efficient transmission over high latency networks such as satellite. Acceleration can significantly improve the speed of loading web pages, so it is a highly desirable product to have. Most of the products are not capable of accelerating encapsulated data such as VPN’s, but the system should still pass that data, however more slowly. Be sure to ask whether or not the system has an acceleration product included.

4) Does your system support VoIP, VPN, and Streaming Video transmissions?

If you have certain applications that you intend to operate, be sure to inquire whether or not these applications are supported on the system. VoIP (Voice over IP) for telephone connectivity is becoming a very common need in satellite communications. All types of users from emergency services to business continuity are asking for telephone connectivity. The biggest concern most prospective users of VoIP over satellite have is that the latency will be too high for effective voice communications. This has largely been proven to not be true. In fact, most cellular telephone systems will experience as much or more delay in their systems than VoIP over satellite. Most satellite providers will support these systems, but if the system latency is more that about 800 milliseconds, you may experience difficulty carrying on a conversation. Some service providers will also sell VoIP equipment. If you choose to purchase from them, or on your own you will want to make sure the equipment includes good voice compression.

Most off the shelf VoIP systems that are not designed for use with satellite will occupy between 40 Kbps and 90 Kbps of bandwidth to complete each call. If you purchase 128K of satellite uplink bandwidth you may consume all of your bandwidth with one or two phone calls leaving none for internet access for your computers. There are compression VoIP systems available that have been designed for use over satellite that will use as little as 8 Kbps per phone call and the call is toll quality. There are even compression systems that will allow for a 1544 Kbps T1/PRI connection over less than 256 Kbps of satellite bandwidth. You will also want to inquire about connectivity to the PSTN (Public Switched Telephone Network). When the signal lands at the hub it will need to connect your VoIP traffic to a telephone line. Some service providers will provide this service for a fee; some will not provide it at all, so be sure to ask.

If you need to operate a VPN over the system, keep in mind that it will likely not be accelerated over the satellite. Acceleration of VPNs can be achieved with external hardware; however it is normally up to the customer to provide that equipment. There are some systems, mostly consumer grade, that will not support VPN’s at all or there are additional charges so be sure to ask. The same goes for Video transmissions from a streaming device, or a web cam. Video streams are highly bandwidth intensive applications and most service providers will require dedicated bandwidth for these applications. The pricing for dedicated bandwidth will be substantially higher than the shared ratio pricing as it consumes 100% of the bandwidth 100% of the time. If you are planning to stream video to multiple receive sites it is recommended that you stream the video over the satellite to a server, and allow other users to get the stream from the server. This way there is only one active stream over the satellite where the bandwidth is expensive.

5) Do you offer CIR or CRA services?

CIR (Committed Information Rate) and CRA (Committed Rate Assignment) are different acronyms with the same meaning. It is dedicated satellite bandwidth that is usually required by the service provider if you intend to operate high bandwidth applications such as video streaming over the satellite. Most enterprise level service providers offer CIR/CRA packages, most consumer level operators do not. The pricing for these services will be significantly higher than shared ratio services, so be prepared. Some providers also require CIR/CRA services for VoIP. Be sure to inquire if this is something you need as some operators may not volunteer this information until it’s too late.

6) How many public IP addresses do I get?

Many consumer level services do not assign public static IP addresses for you to use. This is primarily why they don’t support services such as VoIP and VPN. Enterprise level providers usually provide at least one address, some will provide more. Most providers will give you a fixed number of addresses with your service and charge you if you want additional static IPs. The recommended way to avoid the additional charges is by using your own router on the system and natting your own addresses. Some systems will not support natting so be sure to inquire if this is what you need.

7) Do you have a FAP?

A FAP or Fair Access Policy is a set of rules that you agree to abide by when contracting for their services. They also will include certain restrictions on your service. Read this policy very carefully as the providers like to include wording that can seriously restrict your usage. Some service providers will “meter” your throughput on the system. If you reach a certain level of usage, usually recorded in Kbps, or Mbps they may restrict your bandwidth to a low level, or cut off your service entirely until the next billing cycle. It is very difficult to measure your own usage since most people have no Idea how many Kbps are sent or received when loading a web page. The FAP is also where the provider will spell out the rules of usage concerning applications such as streaming video and VoIP. Going over that document with a fine toothed comb will be in your best interest.

What will be my actual measured speeds?

The service providers will sell you a specific rate plan that will have an uplink or return data rate, and a downlink or forward data rate. This will usually be expressed in a manner such as “128 x 512” or sometimes “512 x 128”. The larger number will always be the forward channel which is your downlink as a user. Most providers will not tell you that the speeds include IP overhead. Every internet system whether its satellite or terrestrial uses IP protocols that require a certain amount of bandwidth to process the IP traffic. Because of the overhead you can expect that your actual measured payload speeds will be around 20% lower than what you are paying for. Actual speeds can be measured by running a speed test from a PC over the satellite link.

If the service provider has their own speed test server at the hub location this will give you a more accurate test of the satellite link than an Internet based speed server. The internet based servers have too many variables to obtain accurate results since the data is being transferred over connections that are not under your control, or theirs. Most systems will be similar in their IP overhead usage, but be aware of this when you purchase your service. If you don’t think the speeds will be high enough when you factor in the 20% overhead you may want to consider a higher service level plan.

9) What Pricing plans do you offer?

In your search for a service provider you will likely encounter a multitude of pricing plans. Each provider will create pricing structures that meet their business model, and that will give them an edge over their competition. Because of this you may find it difficult to compare price. All providers will offer full time 24×7x365 service plans. Some will also offer plans based on usage, and some will sell daily or hourly plans. There are even providers that will sell service for a fixed number of days each month. These plans can be attractive as you will not likely use a system designed for disaster recovery every day of the month, so why should you pay for full time service? If you are comparing price between providers it is easiest to look at their full time rates to determine the cost. However, keep in mind that operators base their pricing on their cost for the satellite space segment. If they are charging less it may be because they don’t have non pre-emptible space or because they operate with high contention ratios, or both.

10) Do you offer other services such as terrestrial connectivity and collocation?

Be sure to inquire about value added services such as collocation space and terrestrial connectivity. Unless you are only buying internet access and have no need for VoIP, streaming, or data backup, you will likely need these services. Some service providers will provide connectivity to the telephone network, and some will not. If you need dial tone you will probably want to contract for that as well. For disaster recovery solutions it is highly recommended that you originate your dial tone from a safe location that is far away from the affected area.

In many disaster scenarios the terrestrial connectivity including cellular phones will not be available. It is important that this is taken into account when designing a backup network. Some of the satellite providers will also offer services to back up corporate or government server data at the satellite hub location. This is highly beneficial to the customer as it provides both off site storage of valuable data, and easy access to that data via the satellite when it is most needed. A satellite hub with a collocation facility can be a powerful tool, and should be highly considered when contracting for satellite services.

This article was written by Bob Exum who is a 24 year veteran in the communications and satellite industries. For comments or questions Bob can be reached at Clear Channel Satellite in Englewood, CO. 303-925-1708 bobexum@clearchannel.com

Flat screen televisions are somewhat like religious symbols to what that is right with life in America. If you really think about it, it actually makes sense. Well, maybe that’s a fairly strong statement. In any case, whenever I find myself near a flat screen television, I almost get an overwhelming sense to kneel down and pray. Those TV are truly awe inspiring devices. How do they ever make them that thin? It truly is amazing.

As you know, flat screens TV’s are advertised for having a far better picture than conventional CRT TV’s or tube TV’s. It definitely is true. The resolution of flat screens is quite remarkable, and of course, they are all high definition ready. The technology behind plasma flat screen is nothing new, but in recent time, it has been perfected to a point where it makes sense to produce these wonders and have them in our homes.

The great thing about flat screens is not limited to a superior picture, but also the convenience of such a lightweight and almost portable television. One of the most annoying thing about the older CRT sets is that it takes an army to move one. No way will my back be able to lift one. However, flat screens makes for not only an awesome picture but easy to move around you home as well. Of course, they don’t take up a lot of room either. You don’t have to devote a whole chuck of your living room to your television anymore, you can simply position it upon some wall space and you’re good to go.

While we’re on the topic of wall mounting; there is something very beautiful about a wall mounted flat screen. Some friends of mine recently got one and I must admit it was an awesome sight indeed. I find myself just staring at it even when the set is turned off. Not only is it a cool device, but it can also function as an attractive piece of modern furniture. When it is powered up, it is as if you are watching an animated painting.

The two main technologies currently available in flat screens are LCD and plasma. They both have their advantages and disadvantages. LCD has the better picture overall but cost more and is only available up to a certain size. While plasma tends to be cheaper and can get pretty big pretty fast. Which technology is right for you is something you need to research and decide for yourself.

Yes, I can surely see a flat screen, whether it is LCD or plasma, in my near future. I’ve already grown very fond of my own flat screen monitor for my computer and it is just natural to extend that to my television viewing. It is simply a matter of time before I take that plunge into that world as well. There really is no use fighting it, I have become a product of life in America in the 21st century. I might as well have the tech marvels to prove it.

Information Technology is an industry that still provides lots of career opportunities in today’s unstable job market. Software development, networking and record maintenance in the health care facilities are just a few of the the opportunities in the information technology field. Because there are many opportunities available in the information technology industry, there are countless numbers of training colleges that have sprung up offering training courses. If you look around for “Information Technology Schools,” you’ll find hundreds of the training schools. However, all schools are not created equal. Selecting the training institutes that offer you the best information technology classes will is a large, and often daunting task. Reading this article will help your search for the best information technology classes in DC metro area. Here is what to look for in an information technology training college.

1. Look for Information technology classes with various options

You will be well aware that there are options like associate degrees and bachelors degrees for information technology. You must always look for information technology classes that offer both associate’s and bachelor’s degrees in the same college. There very few training schools in the DC metro area to offer both associate and bachelor degrees in information technology.

2. Look for information technology classes with updated training materials

Information technology is a rapidly changing field so there will always be updates in technology that you have to learn as you go. Because of this, you should get the most updated knowledge in computer science to stay in the industry. You should do your research and make sure that the training materials used in the information technology classes are giving you the most updated information in computer science.

3. Look for more practical classes in computer science

Unlike other programs, the information technology classes need more practical tuition than theory. Make sure that the training school you choose has adequate lab facilities. The technology courses should also contain lots of lab sessions focusing on computer science. These practical sessions in computer science will help students to learn the actual applications of their knowledge, and gives them more confidence as they start out on their new career.

4. Look for placement assistance

Though there are lots of career opportunities for students graduating with an information technology degree, the placement assistance offered by some of the best training schools will help in the career search. Joining the information technology classes with placement assistance help you land a .

Finding the Right Information Technology School

With the huge popularity of computer science and information technology, thousands of training schools have opened worldwide. Unfortunately not all the training schools are the same. Moreover, some online career training scams have entered the field quite recently. Doing a little research will ensure that you find genuine schools which offer good education in the field of Information Technology. Virginia, for instance is home to several wonderful career schools which offer practical and tailored curricula to a diverse community of working adults and students. With the help of such colleges, getting into a career in information technology is safe and easy.