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Common Queries Regarding Wireless Video Transmission Units

By: Barry Grimes

Often when business owners are setting up a new wireless security camera system they have a few simple questions which usually come up:

One frequent question is, Should I use sound with a security camera system?

It depends, sound recording is not allowed as evidence in judicial or legal proceedings therefore it cannot be used. According to the United States legal code audio recording is not to be used example, surreptitious orcovert use is audio that is recorded from a hidden device. Therefore, if your CCTV cameras are in open or plain sight then audio recordings are viable. But, if any of your surveillance devices are hidden or obscured, like a hidden camera, then audio cannot be utilized.

Hidden cameras would cover pin hole or tiny cameras plus virtually all concealed cameras, like a radio containing a hidden camera inside. Sound recording in a hidden camera or micro camera is only available to law officers or law enforcement bureaus. The exception is the use of body worn cameras, like, a hidden camera in your hat or a hidden camera in a tie clip and so on. Refer to Title 18, Section 2512.

Many new users also wish to know what the difference is concerning a wired and a wireless camera system?

The wired security camera system includes a video cable connecting the security cameras to your recording device such as a DVR/ VCR recorder, or live monitor such as a TV monitor. The wireless security camera includes a built-in or affixed wireless transmitter which sends a video data from the camera to your receiver unit. The wireless receiver device is then connected to the recording device or the TV.

If you are utilizing a wireless security camera system you should consider how far your wireless cameras are placed from the wireless receiver unit. Standard wireless surveillance cameras can send signals up to 1000ft. and high powered wireless surveillance cameras often transmit asfar as 2500ft.. These optimal distances are for clear line of sight transmissions. Signals cover significantly shorter lengths when there are multiple walls, barriers, or interfering wifi tranmissions present between the wireless cameras and your wireless receiver device.

The most frequent source of wireless transmission interference is from cordless or cell phones. Cell and cordless phones transmit using the 2.4 GHz frequency and will create interference with 2.4 GHz wireless security camera systems. Fortunately interference is usually minimal and usually only if your phone is in a straight line between your transmitting camera and the receiver unit. Other causes of interference include wireless Internet, networks and WiFi.

The interference coming from walls and other barriers should be minor. You will find 2.4 GHz wireless security cameras will send and receive through walls up to 2ft. in thickness, as long as your wall is not built with an excessive proportion of metal.

Can I have several wireless security cameras at a single location?

Most wireless security camera setup has more than just one camera. You usually find that most systems allow up to four wireless surveillance cameras in per area. This is because each device is sending its signal using a minor variation of the 2.4 GHz transmission frequency which is called the channel. If you have more than four then your transmitting security cameras will begin to interfere with one another.

If you want to view all four wireless feeds from the four surveillance cameras at once that will require four unique sets of wireless transmitters and receivers. You can use one wireless receiver with four transmitters but then you will have to toggle back and forth to each channel. You will only be able to view one camera at a time when you decide to utilize only a single receiver. When using multiplenumerous wireless cameras in a single area you will have to set the DIP switches for each transmitter to a different channel.

Article Source: http://articles.tiptopweb.info

Barry Grimes - Home & Business Security Consultant: writes articles on related products and services such as... Car alarms and security night vision security cameras

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Common Queries Regarding Wireless Video Transmission Units