Cell Phone Signal and Brain Cancer Relation

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New report on CNN that got published recently draws evidence to cell phone usage and possibility of brain tumor. Now the recent report is not something that is already out their in the public domain. This report just draws in more diverse voices stringing in more results. The study claims that a cell phone is emitting microwaves similar to those that get used to cook your food in a microwave. The food gets cooked or warmed in microwave by heating the water molecules in the food products. In a similar fashion the cell phone radiation basically cooks your brain. Now the study do acknowledge that the gestation period of this cause and effect to show up is about 34 years and we have only been using cell phones for about 15 years and in essence can’t categorically prove that the cell phone has this kind of effect but again the scenario after 34 years does not inspire confidence either. I like to draw the analogy to Global warming, where the results are not in conclusively but gives pause to the thought that, it is better to be safe then sorry.
Now the good news is that the effect of radiation is inversely related to the distance at which it is held to the head. The radiation effects drops dramatically when using head phones or Bluetooth. Now, a cell phone booster system can keep the radiations low as well, how? The cell phones that work hard to maintain a certain signal strength works double time to achieve the desired results, that is also the same time the cell phone emits radiation due to the extra work, Kind of like you perspire more when you are working harder. When the cell phone has sufficient signal strength , they don’t have to work as hard and http://www.espow.com/wholesale-security-surveillance-cell-phone-booster.htmlThe cell phone booster system basically assists a cell phone in doing a better job of connecting, sending, receiving voice and data signals. Now, their are some concerns with the booster system creating more cell phone radiation similar to the cell phone does. Now, going back to the fact that the effect of radiation drops dramatically with distance makes the radiation effect negligible.

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LED Bulb light- How To Choose The Right LED Light

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LED  bulb light are one of the most widely varying types of bulb on the market. With a wide selection of choices regarding colour, brightness, power and viewing angles, it’s important to take a moment to consider your lighting needs, to make sure you choose the most suitable LED light bulbs for your needs. It is important to have a basic understanding of terms such as wattage and lumens, and to be aware of issues such as connection and fitting types, and how viewing angles may greatly affect the way in which your LED lights work.

Wattage is the measurement of electricity, or power. The more watts a light bulb consumes, the more power it consumes. This is important because the more power a bulb uses, the more expensive it costs to run, because you’re paying for all that power! Up until now you’ve probably associated power with brightness, being aware that a 100 watt bulb will light your room far more brightly than a 40 watt bulb. This has always been true for filament bulbs and halogen bulbs, but with LED lights it’s quite different.

The reason that LED light bulbs are different is simply down to the fact that they are vastly more efficient, using much less power, yet still able to provide as much lighting as you need, or are used to. LED lights are typically rated from 1 watt to 5 watts, which is in stark contrast from the levels of power you may be used to. If you’re using filament bulbs then you may well be using anything from a 40 watt bulb to a 100 watt bulb; even if you’re using halogen bulbs, which are more efficient, you may still be using anything from 25 watts to 50 watts. LED lights are much more efficient, and a 5 watt LED bulb is likely to give you the same amount of brightness as a 35 watt halogen bulb, or a 60 watt filament bulb. Since your bulbs are providing just as much light, but for far less power, it’s worth bearing in mind that whatever kind of LED light you choose, you will be saving money on running costs.

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The term lumens is simply another way of talking about the level of brightness. The greater the lumens, the greater the brightness. It’s also helpful to be aware that the level of brightness achieved per watt helps to identify a bulb’s efficiency. So the more lumens per watt, the more efficient a bulb is. But with LED lights it’s not just about lumens or brightness. Standard filament or incandescent bulbs generate light in a complete 360 degree radius, spilling light into every corner. You don’t always want this, especially in places such as kitchens, bathrooms, desks or reading corners. LED bulbs generate a high level of brightness, or lumens, for very little power, or wattage. But they are also focussed lights, meaning that they focus a cone of light at a specific area. Some LED light bulbs have a wide focus, directing light at a broad area, whereas others may create a fairly tight beam which directs light at a smaller, more defined area.

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This level of focus, or lighting angle, is important. When you are choosing an LED light it will be important to know how it will be used and where it will be installed. If you are fitting bulbs in a display cabinet, you may require a very tightly focused beam of light directed at a single item on display. For a reading corner, bedside lamp or desk you may need a slightly wider cone of light, and for kitchens or bathrooms, wider still. The advantage is that almost 100% of the light being generated by the LED bulb is directed exactly where you need it, rather than being wasted, diluted and scattered everywhere. Often this means that whereas a 100 watt filament bulb or a 50 watt halogen bulb was needed, a much lower wattage LED bulb is required because all of the light is right where it’s needed. In many kitchens householders have previously installed two or three high wattage bulbs, overlapping them to create a bright work surface area. By using appropriately fitted LED light bulbs it is often possible to reduce 200-300 watts of light down to less than 10 watts. This represents a significant saving on fuel bills, as well as being much kinder to the environment.

Another factor to be aware of are the fittings for bulbs. If you currently have fittings for either halogen or LED light bulbs it will be necessary to identify whether they are for 100-240 volt connections, or 12 volt connections. There are generally two main types of connections - a fairly chunky one, called a GU10, and a thinner, smaller connection known as either an MR16 or a GU5.3. Make sure you know which connection you need. Once you know the connection, have a clear idea where your LED light bulbs will be installed, and what level and focus of light you need, then it’s time to look around at the wide variety of LED lights and fittings available.

6 Tips for Safer Cell Phone Use

 

1.Children and youth under 20 shouldn’t use cell or wireless phones except in emergencies.

2.Keep cell phones turned off unless absolutely necessary. When they are on, don’t carry them in your pocket or against your body. Keep the back of the phone, where the antenna is, facing away from your body.

3.Use a headset or wireless headphone with low power. This removes the phone from right beside your brain.

4.Use your phone only when/where the signal is good. In marginal areas, it steps up its power output, so you are exposed to more radiation.

5.Text rather than talk. It uses less power and exposes you less. If you need to talk, use your phone on speaker, and keep it further from your head. If you place it on your lap, use a barrier (like a book) between your phone and your body.

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6.Pregnant women should keep cell and wireless phones away from their abdomen, and everyone should keep cell and wireless phones away from babies, children and youth.

Whenever possible, Dr. Davis advises people to use a land-line for phone communications. Land lines work without emitting radiation, and will continue to work when the power goes out.

Until the safety of cell phone use is established conclusively, it seems the best approach for users is to err on the side of caution. The tips outlined above are practical and easy to implement, while enabling users to continue to enjoy the benefits of wireless communication.

Reference:

Disconnect: The Truth About Cell Phone Radiation, What the Industry Has Done to Hide It, and How to Protect Your Family, by Devra Davis

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Cell phone repeaters Vs Cell phone Amplifiers

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A lot of customers get confused with the terminology cell phone repeaters and cell phone amplifier. The main difference is that one is a complete system with a receiver antenna and donor antenna both receiving and broadcasting cell phone signal. The other only amplifies the cell phone signal and requires antennas to complete a full system . In other words if one is looking to boost cell phone signal for their home or vehicle , they must get a complete system which include a receiver antenna and donor antenna . One antenna must be mounted outside the home or vehicle and the other antenna must be mounted inside the home or car. Their are several options for picking the external (donor antenna) and internal (receiver antenna) . For the external donor antenna ,you can choose between a direction sensitive YAGI antenna or omni directional antenna. The Yagi antenna is most suite for situations were the signal strength is very poor and the yagi does the job of getting the most signal from a given location. The reason the Yagi is so effective in week signal situations is because of its ingenious design and signal attraction properties. The yagi frequency is determined by the number of elements in the design and that along with the spacing between each element determines the effectiveness of the antenna and the specific operation.

The omni directional antenna on the other hand is suited for situations where the signal is received from more then one tower. In which case the omni directional antenna will trap signal from multiple towers for the frequencies specified in its design. The omni directional antennas are not as sensitive as the Yagi antennas, however they are more useful in situations with multiple carriers with multiple tower locations.

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LED strip light installation instructions

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1 Check the chimney, light bar, finishing with a variety of supporting components and accessories are complete;
        2, according to the length of the counter, the processing of shade to match the length of the intercept, and then ends processing 45 ° cutting angle
        3. Lampshade around the counter to open at both ends of the inside diameter of 3.5mm, respectively, through-hole to pad connections and fixed;
        4 light pipes under part of the distinction between the two left and right ends of M3 holes, and triangular blocks in order to connect;
        5 to the lamp to be installed into the light of the appropriate size, connected together by triangular block;

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        6. Shadowless adhesive with the fixed block in the corresponding openings around the chimney inside the glass;
        7 with screws to connect a good shade fixed on the counter;
        8 fitted over poles;
        9. Install the driver. Mind when installing the input and output ports, the connection light of the attention is negative connection. Red for the positive connection, black for the negative connection.       Espow LED light is a good choice.

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Reasons for weak signal and need of cell phone booster

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Rural areas

In many rural areas the housing density is too low to make construction of a new base station commercially viable. In these cases it is unlikely that the service provider will do anything to improve reception, due to the high cost of erecting a new tower. As a result, the only way to obtain strong cell phone signal in these areas is usually to install a home cellular repeater. In flat rural areas the signal is unlikely to suffer from multipath interference, so will just be heavily attenuated by the distance. In these cases the installation of a cellular repeater will generally massively increase signal strength just due to the amplifier, even a great distance from the broadcast towers.

Building construction material

Some construction materials very rapidly attenuate cell phone signal strength. Older buildings, such as churches, which use lead in their roofing material will very effectively block any signal. Any building which has a significant thickness of concrete or amount of metal used in its production will attenuate the signal. Concrete floors are often poured onto a metal pan which completely blocks most radio signals. Some solid foam insulation and some fiberglass insulation used in roofs or exterior walls has foil backing, which can reduce transmittance. Energy efficient windows and metal window screens are also very effective at blocking radio signals. Some materials have peaks in their absorption spectra which massively decrease signal strength.

Building size

Large buildings, such as warehouses, hospitals and factories, often have no cellular reception further than a few meters from the outside wall. Low signal strength is also often the case in underground areas such as basements and in shops and restaurants located towards the centre of shopping malls. This is caused by both the fact that the signal is attenuated heavily as it enters the building and the interference as the signal is reflected by the objects inside the building. For this reason in these cases an external antenna is usually desirable.

Multipath interference

Even in urban areas which usually have strong cellular signals throughout, there are often dead zones caused by destructive interference of waves which have taken different paths (caused by the signal bouncing off buildings etc.) These usually have an area of a few blocks and will usually only affect one of the two frequency ranges used by cell phones. This is because the different wavelengths of the different frequencies interfere destructively at different points. Directional antennas are very helpful at overcoming this since they can be placed at points of constructive interference and aligned so as not to receive the destructive signal. See Multipath interference for more.

Diffraction and general attenuation

The longer wavelengths have the advantage of being able to diffract to a greater degree so are less reliant on line of sight to obtain a good signal, but still attenuate significantly. Because the frequencies which cell phones use are too high to reflect off the ionosphere as shortwave radio waves do, cell phone waves cannot travel via the ionosphere.

See Diffraction and Attenuation for more.

Different operating frequencies

Repeaters are available for all the different GSM frequency bands, some repeaters will handle different types of network such as multi-mode GSM and UMTS repeaters however dual- and tri-band systems cost significantly more. Repeater systems are available for certain Satellite phone systems, allowing the satphones to be used indoors without a clear line of sight to the satellite.

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What’s need to pay attention to buying LED strip lights bulbs?

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        1, the brightness of the requirements for different occasions and different products with different requirements of the LED brightness. For example, if the LED light on some of the jewelry counter inside large shopping malls, we will have a higher brightness attractive, but also a decorative LED lighting and can be divided into a colorful LED lights with different products.
        2, anti-static capabilities: ESD anti-static capabilities of the LED, long life, but the price will be higher. Usually higher than 700V or more static the best.
        3, the same wavelength and color temperature of the LED, the color will be consistent with this combination of large quantities of lamps are particularly important. Which do not produce the same light color too.
        4, the reverse leakage current is conductive when the LED current, we propose to use a smaller leakage current of LED light.      

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        5, water capacity, LED lights for outdoor and indoor requirements is not the same.
        6, LED light-emitting angle of the LED lights a great impact on the very different lighting requirements, such as  LED strip light a 140-170 degree we recommend that place. The other we do not explain in detail here.
        7, LED chip core quality of the decision LED, LED chip brands that there are many foreign brands (such as CREE, Nichia, etc.), but also China Taiwan (such as Canton Ga, wafer, etc.). Price difference between different brands very much.
        8, LED chip size also determines the quality and brightness of the LED, we choose, they also try to choose a bigger chip, but the price difference.
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Benefits of Mobile Signal Booster

Increases the signal strength of the cell phone resulting in better reception and better usage of your cell phone

• You can choose a mobile signal repeater in accordance with the range of area to be covered for enhanced signal coverage
• Eliminates the possibility of distortion in calls due to poor reception. Increased signal ensures voice clarity and removal of obstructions like faded or blurred audio data.
• They are cost-efficient. The costs involved in the need of making multiple calls due to cracked audio data are eliminated saving time, effort and money of the user.

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