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September 14th, 2009 admin Leave a comment Go to comments

Guide to Wireless security cameras

The use of wireless security cameras has become increasingly popular in recent years. This increase interest is due to many reasons. Some people use wireless security camera for ease of installation. Other people use it because the cables run is impossible or unprofitable. Whatever the reason may be, wireless security cameras fast becoming the preferred method of surveillance for many people.

Wireless security cameras are so popular because, literally, users can place anywhere is additional protection needed - And the user does not have to worry about wires. The placement of a security system is very flexible and easy to install, if the installer does its job. Security Wireless cameras have a very high rate of initial installation, if no precautions are taken.

What kind of failure? Say you install the camera and it gives them power but no signal to pick up on the receiving end. Fortunately, this problem can be solved with some due diligence. And when you're thinking about installing wireless security cameras (either by itself or with some assistance), there are three frequencies that are in the market for the general public.

Choosing a security system: 900MHz, 2.4GHz and 5.8GHz

The lower the number of frequencies, the more walls / objects your security system can pass through (with the exception of concrete and metal).

900MHz wireless security cameras can be used in installations where the signal has to go through the trees or in dry wall, to reach the wireless receiver. This bandwidth is not much interference other devices, and as a result, the signal can be relatively strong. The downside is that now there are only two available channels on this frequency, its use is very limited.
2.4 Wireless security cameras are most common in the market. So are the 2.4GHz phones, wireless routers, keyboards and mice that we all use. Basically, if you see something in the wireless market, there is a good chance you're in a 2.4GHz frequency. As a result, many of the security cameras 2.4 GHz wireless fail. There are up to 12 channels available in the 2.4 GHz frequency that can be selected for transmission, but the reality is that if you live in a city like New York or Los Angeles will not find a single channel that is occupied by a wireless device.

To resolve this problem, some manufacturers have started using the 5.8GHz transceivers into their wireless security cameras. The frequency of 5.8GHz is relatively clean, and subsequently, the success rate wireless camera installation is higher. You can have up to eight analogue cameras wireless security 5.8 GHz frequency. But the frequency of 5.8GHz has a problem. It goes through walls as effectively as 900MHz or 2.4GHz frequency. This is a great disadvantage.

So far, we 900MHz, which can only have two cameras on him (not very practical), and 2.4 GHz, with nearly every device known to man in it, and 5.8GHz, which is relatively clean, but fails when it tries to send the signal through the walls. To resolve this problem, some camera manufacturers security have begun to 5.8GHz high-power transmitters and antennas for best quality wireless cameras. As a result of this addition, security cameras 5.8GHz wireless signal can now send a camera through a wall.

If you find a camera of 5.8 GHz and the receiver on the market for under $ 200, it most likely has a 10-milliwatt transmitter in it, which is the transmitter of the lowest energy in the market. Ideally, with line of sight, you can stretch to 300 feet (in theory). In reality, however, never the case. The signal strength is reduced by interference and the walls. If you are looking for a camera that can transmit video up to 500 feet away, you need a camera with at least one transmitter of 100MW. To a greater distance than, say, 1,000 feet from 2,000 feet, you need a system with a one watt transmitter.

These numbers are very general and may change depending on distance, time, and the availability of a clear line of sight. A good way to increase the likelihood of success is to put the security camera and receiver antenna as highest possible to have a clear line of sight. Before making any purchases however, ensure that you identify your specific needs of a system security so that you receive adequate protection for your home or business. And if you still need a little help choosing the right system, not be afraid to ask professionals!