RF Communications

Radio Frequency is Over 100 Years Old

While it may seem hard to believe, radio signal technology has been around for over a century now. By the time the Twentieth Century had started, Alexander Popov and Sir Oliver Lodge, two budding electrical engineers, were paving the way for radio. In December 1901, Guglielmo Marconi had developed a wireless transmitter and receiver. He used these tools in a famous experiment where he successfully transmitted a morse code message through radio signal from Cornwall, England, to St. John’s, Canada.

What is RF?

Today, radio frequency is so synonymous with wireless signals that the terms are used almost interchangeably, with radio frequencies describing everything from AM bands between 535 to 1605 kHz to Local Area Networks that top out at about 2.4 GHz. Traditionally, however frequencies defined as radio signals only ranged from a few kHz to roughly 1 GHz. Although, if you include microwave frequencies in radio, this range could be extended all the way to 300 GHz.

Different Frequencies are Used for Different Applications

In modern times, the use of radio is highly regulated and controlled. So much so, that specific frequencies of radio signals are used for very specific applications. For instance distress signals or telegraphs are set to only be on frequencies between 490 and 510 kHz.

Different frequencies are used for police scanners, amateur radio, cellular phones, global positioning systems or GPS, LANs and wireless internet, and even microwave ovens. The most basic and necessary applications usually are conducted on the lower frequencies, whereas more private and specific applications will occur on very high frequencies.

Why Operate on a Higher Frequency?

As you know, the frequency spectrum is fragmented and dense with allocated uses for each specific frequency. This is one of the reasons that applications keep being pushed into higher and higher radio frequencies. As new applications are discovered or intended, higher frequencies are used to accommodate them. Each frequency has different advantage and disadvantages regarding signal strength and propagation efficiency as well as interference and noise.

Frequency Shifting and Mixing

Often special technologies are need to receive and make sense of radio signals. For instance, the human voice exists on one particular radio frequency, however cellular phones operate on a different one. In order to make the human voice sound natural and normal through a cellular phone, the voice signal needs to be mixed or shifted in order to match the frequency that the phone operates on. Typically, a device called an RF downconverter is used to shift frequencies so they can be received and made sense of by radio technicians.

Get a Great PC for Gaming

System Case

You can get a desktop PCs in various sizes and shapes. Computers with a bigger case allow you to get several larger graphics, more hard drives, and sophisticated cooling arrangements. The most important part is the design of the motherboard, which gives numerous features. The limitation of such large cases is the fact that they occupy a lot of space and can dominate rooms of small sizes.

The number of computers having smaller Micro-ATX and Mini-ITX motherboards is increasing gradually. Their size is quite manageable. However, these are not adequate for users who like to double these up for graphic cards, or fit a larger quantity of internal parts, though they remain almost as powerful as their bigger cousins.

Graphic Cards

Of the internal components contained in computer’s case, the most significant for games is the graphic card. The biggest graphic cards are unlikely to get fitted into all cases. But generally, you should choose the most powerful card that your budget allows, as this component plays the most significant role in the way games perform.

There continues to be a strong competition with regard to price, the selection of graphic cards, plus advanced architectures among nVidia and AMD. The scales so far continue to swing among these two.

In case of gaming PCs, don’t ever be sparing when it comes to graphic cards. Though these components are the costliest, they are the most significant for gaming. Do not hesitate to go for a somewhat slower processor at the cost of a superior graphic card. On the whole, you should think in terms of matching their performance to steer clear of jams, and derive the most out of the two.

The Processor

Though the gaming experience is dependent on the graphic processor, your PC essentially requires its central processor. Even though most of what is available in the market comprises of the same basics, there is difference in their speed of using the memory, the selection of SSD and overclocking.

Promotional Memory Sticks

The first benefit you are going to find when it comes to choosing promotional memory sticks is that you enjoy improved brand visibility. As your customers make use of the memory stick in their daily work and home lives, your name is there on display. This means when they use it at work, your company is showcased on their desk, at home in their home office. This ensures that your name is constantly on their mind, which can improve sales moving forward and ensure you are always the first call they make when they need items that you supply.

Another reason you will want to consider promotional memory sticks to boost your brand is that it can help you reach your audience with ease. Promotional memory sticks are the ideal promotional gift is the majority of your customers are business people, students or the younger generation. This item can help you reach your customer base when the customer base is more likely to use this type of item. A good example is business orientated companies, computer companies or even a SEO agency can benefit greatly from choosing promotional memory sticks to promote their brand.

When you want to improve your branding then promotional memory sticks are a great way to improve your brand. Branding is important if you want to be noticed, you want potential customers to know your name and you want to drive traffic to your website. Making use of branding can help push you forward and achieve success moving forward.

A major benefit to promotional memory sticks is how useful they are. When people want to share documents they can save these to their memory stick and just hand over the information. They are convenient and useful and used by millions of people on a daily basis.

Due to their compact size, they can be taken anywhere at any time, ensuring that they always have a storage device with them as and when needed.

In addition to this and probably the most important benefit you want to know about promotional memory sticks, is that they can help you increase your sales turnover. Remember every time someone uses your memory stick showcasing your company name and logo, they think of your company. This means when they need a product or service that you provide, you will be the first call they make.

While promotional memory sticks may be brimming with so many great benefits, there are some important factors you are going to want to take into consideration. The first and foremost consideration to factor into your decision is your target audience. Ensure any product you choose will meet the daily needs of your customers. If the majority of your customers use mobile devices and store vast amounts of data, then this is the ideal choice to ensure your name is on the tip of their tongue at all times.

In addition to this, you will want to ensure the products you purchase are of the highest quality, this will ensure your company is seen in a positive and professional light at all times. They should come with a good warranty, putting your mind at ease that you are buying a good quality product that will provide your customers with years of use and convenience moving forward.

Intel vs AMD

It is an industry given that Intel makes the fastest processors on Earth. But while that factor is huge AMD has made a positive impression on the gaming community with lower process prices and near Intel performance.

If you are building a computer both Intel and AMD is user-friendly and can be tweaked. In the current market, both AMD and Intel processor technology should remain where it is for next few years at least. So don’t worry about your processor going obsolete tomorrow.

When looking at new processors for your gaming computer build, keep your eyes on gigahertz (GHz). A gaming computer, which needs to handle multiple assignments quickly can function at 2.5GHz but for optimal performance should be in the 3.5GHz plus range. Top of the line gaming computers usually achieve a 4.0GHz output.

Also, the more multiple CPU cores, the better for gaming. If budget is a concern, for your money you are going to get fewer cores with Intel options and more with AMD. With that said, though, Intel cores are more efficient so it might be apples to apple decision.

All the top Intel and AMD processors are in that sweet spot 4.0GHz output with multi cores. They range in price from around $70 to over $300 depending on a number of cores and the GHz output.

It’s hard to beat Intel, but I wouldn’t dread using an AMD processor for gaming if it meets all my needs and falls within my budget.

The most modern Intel processors are the Intel Pentium G3258, Intel Core i54690K and the Intel Core i74790K.

On the AMD side of the ledger look out for the AMD Athlon X4 860K, AMD FX 6300, AMD FX 8320, AMD FX 8350 or the AMD FX 9590.

Buy a SSD Disk Drive Online

Firstly, it is important to remember that although there is a huge range of vendors operating online nowadays, they certainly are not all made equal. It is in fact one of the main gripes of any shopper in any market that the online retailer that was claiming to have the best products at the best prices actually turns out to be a major disappointment.

The reason for this is that anyone can easily become a seller of products that they do not really know much about on eBay or other public auction sites, making it hard to distinguish the pros from the amateurs. Our first tip, therefore, is to seek out a seller that has a certain level of expertise in the area they are dealing in.

This is crucial for a number of reasons, the first one being that – assuming they are reputable and take pride in the standard of products they offer – you are very unlikely to come away with a product that does not meet your criteria or perform well. Good retailers will tend to know which products are good ones and which are not so good, and steer clear of selling the latter to their customers.

With that in mind, look for a specialist in SSD disk drives or SCSI drives if you are looking for these products, rather than just shopping around for the cheapest price. The other major advantage of buying from a specialist is that they will often be able to provide excellent expert advice before you buy, saving you from investing in the wrong product.

The next thing to note is that it is important to choose a company that has a good returns and refund policy, as this can save you a headache farther down the road if you run into any problems. Although the item might be great quality, some will always turn out to be faulty, and this is where a good return and refund policy will help you.

Before you purchase your SSD disk drive, therefore, do adequate research into how things work if you are dissatisfied with your product, and look for negative customer reviews of a company before purchasing. It is when things go wrong that a retailer shows how reputable he is, so if a company has a track record of reluctant refunds, it is possibly better to choose someone else.

On top of these few points, make sure that you get a good price for the item you are buying. It is often hard to know what is a cheap price for the SSD disk drive you are after or what is an expensive price, so shop around to see what offers are available for that particular item.

If you see your product at a particularly low price compared to all the others, exercise caution – huge price drops can indicate that the item is defective or second hand, or that simply you are dealing with a less reputable dealer of a product. In all cases, take the time to read the small print before you buy, and you are likely to find yourself with a great product at an excellent price.

HDMI Converters

  • VGA to HDMI – They are used to convert signals from a computer to a television containing HDMI input. The analog signal VGA is converted to digital and the converters can also handle audio input adding it to the HDMI signal because it handles both video and audio whereas VGA handles video only.
  • USB to HDMI – This adapter connects to the USB port on a computer to add HDMI output to it. You can then connect the computer to HDMI enabled display to enjoy the powerful monitor displays. It can be a great tool for HD video and audio from a computer to an HDTV.
  • DVI to HDMI – DVI is very similar to HDMI as far as the video portion goes, but it does not carry audio signal. A plug adapter can help you change physical connections in case you are using video signal only. To get a signal from the DVI source complete with audio, an active converter is required to combine DVI video signal and audio in HDMI signal.

Other types of signal conversions and HDMI converters that you can use to get your desired audio and video output and input are component to HDMI which handles signals from components like video games and DVD players, composite to HDMI, multi-source to HDMI. HDMI to DVI and HDMI to VGA

When looking for a converter, the first step should be to know what your needs are and understanding the different types of converters. It plays a very essential role in choosing the right converter for the specific needs that you have. Then you should take the time to compare the brands that are popular in the market so as to get a high quality converter that will not disappoint. Check out the features of the converter and if possible go through reviews and feedback just to give you the assurance that you need in terms of reliability and functionality of the HDMI converter you are about to buy.

The dealer you choose to buy from should be reliable as well, especially with the quality of products they offer. You can compare between a number of dealers looking at the list of devices they have available together with the prices, then select the one you feel most comfortable with. A warranty on your device for instance, can be a great indication of how reliable it is. You will be more comfortable buying from such a dealer.

Industrial Touch Panel

  • Easy to operate – As it is the easiest to operate where people simply have to dab on to the monitor and get their work done, people find it easier to operate than computers. The touch panel has a screen that senses the touch and thus allowing people to operate it.
  • Easy interface – With the absence of buttons and switches, there is a larger area for interface design. When setting up the programs or the software for the panel, people have a wider space and thus allowing people to use and view several widgets on a single screen.
  • Fast sensing abilities – When a person uses the keyboard or the mouse to use the varied functions of the computer, it takes time for the computer to receive the command and act upon it. While a touch panel receives the commands faster with just a single touch.
  • Resistant to natural conditions – Most industrial panels are exposed to the public where there are times people put in higher physical effort to operate the device or let the panel get exposed to weather conditions; it is at these times that the panels are resistive to such external changes. They are covered with necessary protection to make it resistant to external force.
  • Cost effective – With most computer technologies opting for touch panels, it has become cheaper to manufacture them as compared to computers with keyboards and other components. It is cheap to purchase, install as well as saves up on money for the long term as it lasts longer that the other monitors.
  • Easy to maintain – As there are no keyboards or switches on a touch panel, there is no question of dirt gathering on the device. Frequent usage of the touch panel may make the screen dirty but is very easy to clean it without many accessories.

Benefits of Fan Filter Units

A fan filter unit is important for any computer and can help reduce the risk of your fan failing and not working at its best, thereby now adding or drawing out enough air to keep all those essential components cool.

The first benefit you will find when you take advantage of a fan filter unit for your computer is that it eliminates the risk of dust getting into your computer. Not only is your fan at risk of dust, but it can get inside the casing and can cause problems with the internal components within the machine.

Signs that you may have dust in your machine is when your machine start whining. Don’t worry it is a sound you cannot ignore. The fan is one of the only components within your compute which has unsealed moving parts and is particularly susceptible to dust.

Think of the dust in your home. Most people assume that it is made up of human skin and while a large majority of the dust in your home is human skin, it is also pollen, pet hair and even plant seeds. Plant seeds in the warm confines of your computer case can be a devastating end to your computer system as you know it, resulting in you having to replace parts that seize due to plant growth within your machine.

The main benefit of fan filter units is that they eliminate the risk of dust, both on the fan and within the computer case. This can put your mind at ease that you are taking all the necessary precautions to help your computer perform at its best on a daily basis.

In addition to this, you will find that the fan filter units are affordable. These can be found in most computer supply stores and come in at different prices. It is always worthwhile to shop around and find the supplier who is going to provide you with the best quality at the lowest price. If you shop online, then you also enjoy the benefit of to the door delivery.

These fan filter units are quick and easy to install. They come with simple step by step manufacturer instructions and if you follow them you can have the filter in place within minutes.

There is the risk that when buying a fan filter unit that the filter pad comes in one piece and you have to cut it down to size. This is relatively easy to sort out. All you have to do is identify the size you need by measuring your fan casing. From here draw out the size on the filter pad and then cut it accordingly.

It is important to remember to change the filter pads on a regular basis. See if the fan filter unit you buy comes with more than one filter pad that you can change as and when needed. You will notice that after a couple of weeks the filter pad will change in colour as it catches all the dust and stops it from getting anywhere near the essential computer parts.

Install a Cabinet Cooling Fan

Overheating is a serious risk and you must take precautions to reduce the risk of overheating, which can cause your systems to seize, shut down and never work again. Think about the devices you are about to place into your entertainment cabinets. There are games consoles, routers, television boxes, computers, DVD players and more, all of which are about to be pushed together over a few small shelves, not giving them much space and reducing the airflow.

Chances are if you have chosen an entertainment cabinet that has doors on it, you are trying to keep your devices hidden. There is nothing worse than messy wires and a number of items all over the place when you are trying to keep your living room neat and tidy.

At the same time, cabinet cooling should be at the forefront of your mind. If you have purchased a sealed unit that is intended specifically for entertainment devices then it will come with space for cabinet cooling fans. But if you have taken an older cupboard and transformed it into an entertainment unit, then you are going to have to cut holes and ensure your devices get the cool and constant flow of air they need, eliminating the risk of causing long term damage and saving yourself money in the long run.

Lack of air circulation can cause serious problems, even destroying expensive equipment. Once you find cabinet cooling fans online and you have placed your order, you are going to have to prepare the cabinet for the fans, especially if you don’t have the space already cut for them.

Ensure you buy your cabinet cooling fans from a reputable and leading online supplier who can provide you with superior quality products that you can rely on and trust. Shop around, don’t buy the first fans you find and then review and compare them, ensuring that you can get them in the size you need. Never let the price be your only deciding factor, quality is much more important and will reduce the need to replace the fan in the near future.

You will need to start by marking out where you can your fans to go. Having one cabinet cooling fan is not going to be enough. Look at your desktop PC, it has a minimum of two fans. This is because one is pushing cool air into the computer case, while the other draws out the warm air. This is the same circulation you want to achieve with your entertainment cabinet.

If you have a large cabinet with a number of shelves, you may need four or even six fans, allowing two or three to push in the cool air and the other two or three to draw it out, ensuring a constant flow of cool air at all times.

Once you have marked out the area, you want to cut the holes. Ensure you identify the size of the cooling fan frame and then cut accordingly to allow the fan to simply slot into place.

When you have cut the hole, you will need to assemble the fan as per the manufacturers instructions and install it accordingly. Once it is screwed in place and the fan guard has been mounted, turn on the fans and see how cool your equipment will run moving forwards.

Hard Drive Disaster Rescue

Firstly, there are many ways a hard drive can crash. The point of a hard drive is storage, and if a crash occurs there is a chance of losing everything on your computer. Whether it’s a PC or Mac, hard disks work the same way. The difference is the size or how much storage it can carry. A crash can occur through many ways such as worn out circuitry, misuse, a virus or malfunction. Although a hard disk is designed to die after a long time of usage, the life of the drive can decrease if mishandled, over used or if there is a wiring fault where the head and logic board are connected. When disasters such as these happen, the way to solve the problem is to rescue the drive’s data.

Another component to a hard drive disaster is what tools are needed to recover it. If the drive crashes and all data is lost you need a data recovery software in order to retrieve the lost data back. The amount of recovery all depends on the computer usage after the hard drive crash and the definite file system damage. One can try to recover data from a crashed hard drive at home, but this requires careful steps and further damage can be added if a small mistake is made. The best thing to do when one is unsure of a solution to a hard drive disaster is to take the drive to a professional who will have a higher chance of recovering the drive properly.

Lastly, when losing your data once and retrieving a new drive, there are more cautions and steps to prevent this problem from occurring again. One thing to remember is how the drive is handled. If it is treated safely and not thrown around or mistreated, there is less chance of a problem. This includes cautious plugging and unplugging and keeping the drive around a clear area (away from dust, dirt e.t.c). Another way is to save energy and take breaks between computer use to stop the drive from overheating. A good amount of time for breaks would be around 20 minutes. Finally, the most important facet is to back up your data as often as possible incase another fail occurs. This way, any important data will not be lost.