August 27, 2011

Mobile Phone Radiation: The real problem and how to reduce exposure to radiation from mobile phone

Recently, the WHO, the World Health Organization came up with a statement that the phones can be hazardous to your health. They made this conclusion after a conference, etc. all over the world, scientists, physicians, analyzed data from a study conducted in Sweden and found that, despite all the other years, where there was a provision in this year could have had.

This was politically motivated, as the WHO, the organization that created the horrors of h1n1 Virus, SARS and mad cow disease, actually requires a little 'more in the foreground to be relevant, or is it the real possibility that mobile phones will be used for a long period, can cause tumors in the brain?

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In view of the study, some important facts to come out. Some of them are on certain assumptions and are based on logic.

Where is the antenna danged?

He recently had a small telescope Phones> Antenna that can be raised or lowered. This small stub antenna fixed on top of the phone is migrated, and then off to the one used today, especially an antenna "patch", a small pod of about 1 "x 1 / 2" in size behind the back cover of the phone with ( do not cover the dough). These patch antennas to work almost like a telescope, but are not inherently more efficient. This means that "not all phones are createdequal. "This is different phones produce different levels of performance.

Even more important, is mobile, that have found their antenna behind the earpiece of the phone, and others who are behind the microphone or mouthpiece. There was no difference between these two cases did. Should be. Proximity to the area behind the ear and, especially, has energy, as transmitted by the mobile phone has a greater intensity oftransmitted by the antenna behind the mouthpiece. Journey to the signal in the brain area, the signal must pass through the jaw bone and moisture of the mouth to the brain. The energy of the mobile phone with 5 "of the antenna, you can use the spectrum must be measured, and was 10 dB or ten times less energy to the ear.

iPhone is for example the antenna around the cellthe right side over the top on the left side. The energy is spread over a distance of approximately 6 "No studies have been done to determine if the distribution of energy over 6" patch antenna different from 1 "x" was formed. Mora, and most of the androids at the end of the phone's antenna is located on the back of the device. He would even here the signal to bring the phone and then travel through the jaw. Similar to the Motorola Razor flip phones, wherethe antenna near the nozzle away.

Certainly not all phones are created equal.

Phone Power

What was to start the energy level of the phone? This is an important point. If it is a European study, a cell phone can put out a maximum power of 2 watts. Here in the United States to save energy, and "talk" phones designed to operate at lowLevels, about 1 million watts in most cases. Mobile Phones in the United States have a maximum energy of one watt ... 25% by the highest in Europe. This was not considered.

What have the standard protocol to prove it?

IDEN CDMA or GSM? The three standards are used in the United States, are infinitely different. CDMA phones operate normally even at levels lower than their GSM counterparts powers. The equipment in the U.S. CDMA, UMTS or WCDMA in Europe.It works both GSM and CDMA channelized m is distributed over a larger area. Iden phones, famous for push to talk operate at much higher levels than the other two systems, because their father is forcing apart the phone towers operate at higher levels. Up to 2 watts in some cases!

Other considerations.

Have considered other factors, such as the total amount of metal in each cell compared to the plastic iPhone? Several Nokia, Samsung and Sanyo phoneshave very little metal, but cleared the same performance as Motorola counterparts. All this is very important in view of the study.

With the headset to your ear against you.

More news organizations to be pursued, that the use of a Bluetooth headset is a good idea to contact over the phone to your ear. You have no basis for this discussion. No test has ever been the impact of Bluetooth headsets done on the brainCancer!

Here's what they say: Bluetooth headsets work with a frequency of 2.4 to 2.5 GHz. A microwave oven operates at a similar frequency. The headset consists of 2.5 million watts of power, at a distance closer to the brain when the phone! Earphones in the ear canal so you can write in more detail! 2.5 million watts of power is 2.5 times greater than the energy of the phone in normal conditions. How can you recommend to anyone who passes from one cellPhone with a Bluetooth headset is beyond my comprehension ... unless of course you sell Bluetooth headsets.

Dbar (DA-BAR)

The bars on the phone can be a good indicator of whether or not the phone at full power or operating system to the level that I described in milliwatts 1 ... be minimal energy consumption. First, the more energy you get from the tower, the tower more energy for you and not your phone has to setaccessible from the tower. More bars on the phone = low levels of exchange rates of the phone. The performance of the phone transferred to the tower is inversely proportional to the signal received from the tower. From the bar! Can you trust the bar on the phone? 5 bar is full? Only with some phones. Motorola, we have always found them to be honest with her interpretation of the bar. -75 DBm means 3 bars of the downlink signal, and bars full of tools, typically -60 dB. Each bar to the Motorola phone is 10-20 Times energy difference. Now, etc., with Samsung, LG, as the "juice" from the bar. This means that 5 bars on the phone may still mean a signal moves from the lower tower and a high signal generated by the phone. In fact, the carrier how to give people who complain about their phones, the signal level models of Juiced Up ... that, as in thought we can do better than full signal! If you have one or two bars, you can be sure of having the phone toThe power is full, most of the time. You may also notice that the phone battery runs out faster ... because it is transmitted at full power!

What can the reduction of the energy levels of the phone so that it can be done to minimize the risks, if any, associated with electromagnetic radiation? What you need is better downlink signals from the tower, so that the phone is not the higher power. There are several ways to do

1 Usean external antenna

With some phones, there is a "small connector on the back ... up or down behind a thorn in this socket that connects directly to the output of the antenna of mobile telephony. With an adapter connected via cable to this port can you pass an external antenna, which at least 1 meter (3 feet) can be kept away from you. A couple of things as a result. The amount of energy in the external antenna 3Foot is 1000 times smaller than the antenna of the phone, when placed against you behind. In addition to this antenna is more efficient than the small of your back on the phone, the phone is more efficient in transmission and reception, and forces it to the lowest level. In some cases amounted to 10,000 times less energy is needed to increase the time to speak, and better reception, of course, no missed calls. The antenna canFor the car window (we aspiring policeman antennas) for the window when you are stuck at home as well. Or you can just hold off and put it next to you. Antennas with magnetic media., While she is out of the car or at home in a doubling of the level of the towers, and the halving of the transmission power of mobile phones.

2 Install a docking station.

We have two products on our site, made a speech on the pier, N, andother is Siemens Gigaset. These two products on your phone to connect wirelessly or via cable to the data. With the docking station near a window, for example in the kitchen and fixing it to the phone, the signal level of the phone will be higher. More importantly, the phone when the transfer is nowhere near you. This is because these two products, the mobile phone directly to your home phone fixed sin.If someone your phone number, call the house phone rings. It takes, (also the caller ID), and how do you respond when your ear. Similarly, you can choose from. The phone does not need to be next to you! It can be in any other part of the house. The advantage is that you get rid of your landline completely and use the phone only.

3 Adding a repeater.

If you have at least 3 barsoutside the home and 1-2 bars inside, you're a perfect candidate for the cell phone booster or repeater. The reason for the lower level is home and away, because the materials absorb and reflect radio signals. Our repeater system simply said that the bridge resistance, and takes the signal from the outside, amplifies it and sends it to the inside. The signal is amplified and from the phone to the tower. To install an antennaoutdoors, run the cable into the amp and install a small indoor antenna. turn it on and voila! 5 1 bar, and like I said, the more bars you see on your phone, the signal is not transmitted.

Someone might ask, but what about the energy of the repeater? Is not this a problem? The fact is that, since our antenna tower looks out ... the amount of energy that is absorbed and the amplifier is about the same power output of the phone.The difference is that the repeater antenna of three or more feet from where you are. This means that the level of the repeater is 1000 times more or less than most of your ear phone! No problem here! We have repeaters for small apartments, offices, warehouses and even hospitals and hotels. The advantage is of course not only to reduce exposure to cell phone radiation, you increase your talk time, have fewer dropped calls, and sixable to phone in more places than before.

4 How about the adhesive RAD?

There are many products on the market, which will tell you that reduce the power of mobile phones. Sticker on the back of the phone, for example, are nothing but a farce. Any metal near the set antenna of a mobile phone to get the results in less signal from the tower ... and if you read .... Forces to power the phoneup to higher levels!

5 text messages use less phone.

Use text messaging frequently. I always wonder in this world of progress, as you end up again with text messages. If you're older and remember the days of pagers, we would get a phone number to dial a pager, and a signal would be sent, the pager would beep and the person who would call his answering machine. And 'the ability to migrate directly to the pager of the party, who wanted to send hiscalled to the possibility of response to another pager with a small keyboard on the pager that you received, or sending a message. This has led to the situation, someone with a cell phone as a paging call their migration. This led to their migration to a paging mobile phone text messages, then finally called them instead. How the hell we have a 360 degree circle with a technology that we want to go forward was?

That said, the best thing you can do isThe technology sparingly. There is no reason to talk on the phone if you have a land line in your area. As well, you could wait for the good old way, until you return home, get to call your friend. What's so urgent? If the WHO is right, and maybe they are wrong, or maybe next year they will look at the facts that are put under pressure by the CTIA (the organization that represents the carrier) and have revoked its decision on mobile phones. Maybe even better. ... have read my article,ask the people conducting the study in order to study more ... and perhaps 50 years, you get a different answer .... mobile phones are in good health! To reduce stress. Less stress = better health. Tallest tower transmission power of mobile signals low = health = better.

If you have any doubts at all about using the phone, you can do without using it, of course. However, all the above solutions reduce safelyenergy, reduce the risk of cancer, if any, and offer decent coverage and fewer dropped calls.

Mobile Phone Radiation: The real problem and how to reduce exposure to radiation from mobile phone

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August 18, 2011

Construction of a parabolic reflector antenna to improve WiFi

A reflector antenna WiFi? There are some good reasons to try to increase the reception of your Wi-Fi system, or to increase the signal from the wireless router in a certain direction.

This article gives construction details for a reflector antenna that we built, along with tips and instructions from somewhere else online. Unfortunately, not enough to cover the structure to achieve the goal of long distance (200 meters) the receipt, but> Increase the reception and be less ambitious in terms.

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Wifi antenna - why are they useful?

With wireless technology, they usually have one or two small antennas integrated in the wireless router and an antenna is installed on your PC or laptop to a USB key. In general, this is all you need, but sometimes you need something a little 'better.

For example, at home, if your student is at some distance from the router, you can have a poorSignal or away from home in a hotel, you can find similar problems.

To solve them, improve the antenna that you see on your PC, or if at home, can also improve the antenna on the router. The idea is to make a directional antenna, making it stronger in a desired direction, and weakest in ways that do not play any role. With a laptop, the antenna is usually installed on the plate keeps the screen, and no way to improve it. So you need toThe purchase of a wireless USB dongle with an external antenna connector. By placing the dongle (on a USB cable), you can improve reception, and by installing a larger antenna, you can improve reception. In both cases, this may be enough to solve the problem without worrying about the directional aspects.

However, if you have an external antenna, both on your PC or router, may be directional properties with a suitable reflector, we have described above as below.Another approach is to make your own directional antenna from scratch, something called "satellite ready". Basically this is a metal can, as a guide for radio waves, with a rod inside the antenna. On the web there are many discussions about the optimal size for an antenna ready, with many proponents of the use of a Pringles lined aluminum container.

Our Project Wifi Antenna

The background of this project was to stay in a hotel without wi-fi, butKnowing that about 200 meters away there was a restaurant with WiFi, for which I was able to get the access code (there through a coffee!).

The challenge was to get on my laptop, as an extremely weak signal to improve the restaurant.

As always, I have a number of Internet searches and discussions with like-minded tech friends, Jim and Bill. My first thought was to get ready for an antenna, but it seemed that this was the best, where the signal was strong, andAntenna was ready to be necessary to avoid disturbances in the vicinity, or the antenna was completed on both sides (router and PC) used to give a sort of pipeline to the airwaves.

However, my challenge was a very weak signal that the amplification is needed, so I went with a different design that the focus of a reflector, the waves on a standard antenna. Where only small improvements are needed in the signal, Apparently from the Internet, a flat metal reflector behind the antennais sufficient. Yet another challenge for a bent parabolic mirror is necessary. The highlight was that my technical contact Bill (an amateur radio enthusiasts in Ohio) to make a design for this dish, I wanted to do, rather than the antenna arrangement ended.

The antenna design

Several Web sites have a design consultancy that has been very useful. In the end I decided to buy a USB WiFi dongle with a wireless antenna and a large outdoor antenna,to get a 'rubber duck "for the maximum gain for the signal before the reflector. The reflector sheet of cardboard was glued to a curved structure, which is mounted the antenna.

To create the structure that I have two types of cards. For the curved reflector, I wanted paper, it was difficult, but it could be bent into a curve with no creases or tears. I bought a piece of paper can be used in a frame, about 1.5 mm thick (16.1 "). Support for the three crescent-shaped, I wantedCharter, which was rigid and does not bend easily. Here I provide a cardboard box, about 3 mm thick (8.1 ").

For the shape of the reflector, I used a calculator freeware parable. I want the size in hundredths of a millimeter, that is. Diameter = 30000 (ie 300 mm, about 12 "), how the program works only with integers. I wanted the focal length of about 6150 (61.50 mm), with half the wavelength to be adjusted to 2.4 GHz (The rational'm not sure, but I thoughtreflection would be appropriate, the incoming signal at the focal point, but interfere with it). So I have the depth to get to 9146 (ie 91.46 mm) for this focal length. It is a relationship between the focal length with a diameter of 0.2 (I've read in a web page, which ideally should have this ratio between 0.3 and 0.6, but I wanted a good pick up weak signals in diameter) has created the program to score a table with values ​​from a model calculation of graph paper paper.parabola I was also the focal point, which is theWhere the reflector concentrates its signals collected.

I used the graph paper template to mark and cut three supports, to drill a hole in each of the fire. Why was the rubber duck antenna, which is thinner than in the form, I have done little to support the implementation of the summit. I also left a corridor alternative service on a rectangular card, in addition to the half-moon needed to strengthen the structure. I have also attached a strip longer here to make each piece ofis thicker / stiffer - but the feeling and 'been over-engineering "!

Then I cut the rectangle on the curved back, and spent two weeks in training to meet the media. Most of the time I had to do it in a library in prison, and after adding books, more curves and fits the mold. Once properly trained, I glued the curved back supports, with the antenna in place to ensure that all in a row. I rounded the whole band to secure it while the glue dry (I used a'EVOSTIK' glue solvent in the case of a water-based adhesive impairs the map).

It was the latest step in paste a sheet of aluminum foil on the back of the curved shape with a thin layer of glue. Finally, I glued a ticket "sighting" on top of the assembly, so that I can more accurately target my distant source radio.

Test and results

Add the reflector has a significant improvement in some signs, and taken to other signals that had notseen before, especially if I continue with the orientation (horizontal v. vertical) direction and experience. In fact, it was very sensitive to direction - only a few degrees could make a big difference to the received signal to do. I inSSIDer mainly to the signal, which was very convenient, as drawing a graph, to see how it goes easier, such changes are a sign of how you always experiment to measure.

At home where I could broadband in any case, I have an unsecured wireless system, the first choiceout of the field, and on the web. So the conclusion is that the principle of operation as a WiFi system to exploit the normal range. Unfortunately, the original goal was not achieved, since the restaurant does not carry at your fingertips! I think I'm just hoping too much to pass through a 200-yard gap. I would think a spotlight again with a larger width, but portability is a problem, and the thought of a giant leap from a receiving antenna ...

Copyright Michael SMitchell

Construction of a parabolic reflector antenna to improve WiFi

Bed Bug Chicago

August 4, 2011

Contact with the latest technology from Sony VAIO L series all-in-One

New touch-screen technology is popular all over the world to look for companies producing technology gadgets to improve touch and deal with many new gadgets. Because of the touchscreen phones are now familiar with the people of his time to his now familiar with touch screens and laptops.

Sony has launched its touchscreen and laptop computers to improve the touch-screen computers in the market segment. The Sony VAIO L series all-in-one touch screen provides all the currentFeatures that styling is crazy, this of itself.

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Specification:

* Up to 2.66GHz3 (Q8400S) Intel Core 2 Quad
* Up to 1333MHz frontside bus speed
* Up to 4 MB of L2 cache Advanced Smart
* Up to 2 TB (5400) hard drive
* Up to 8 GB of DDR2 SDRAM preinstalled. Up to 12GB Max Memory Size Total
* Memory Stick PRO media slot
* Slot for SD memory cards
* Built-in webcam videos and photos with face tracking technology
* Built-in IR receiver (only on models with TVTuner only)
* QWERTY keyboard, 104 keys with 2.7 mm stroke and 19.05 mm pitch
* Fast Ethernet (RJ-45) Protocol
* Gigabit Ethernet 10Base-T/100Base-TX/1000Base-T
* IEEE 802.11b Wi-Fi
* Integrated Stereo Bluetooth A2DP technology7

Features: The VAIO L series offers many features that are a key on the keyboard, just press the button and restart the VAIO Media Gallery. It offers many innovative touch experiences that you have full control of your computer and a incredible experience of touch. You can easily organize your favorite images and video in just three simple steps you can quickly create professional-looking videos with family and friends can share. Through the use of GPS-enabled camera, you can explore the images of the map.

It allows the user to the wireless router and connection in any part of the room with its built-in wireless 802.11 b / g / n LAN technology. The new technology of wireless Internet access with the superior> Wireless range and speed. With Blu-ray Disc-ROM drive you can play Blu-ray disc to play the video with better quality sound and picture.

The VAIO L series all-in-One is face recognition camera that moves according to your movements during video chat and you can also use the recordings and fit them into 12 elegant setting. WebCams Digital Message Board allows the user to a video and MMS to your family and friends to create.

Contact with the latest technology from Sony VAIO L series all-in-One

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