Rabu, 16 Juni 2010
Wireless devices and functions
first - first you should prepare is1. Acsess point
Function Access Point supposing as a Hub / Switch on the local network, which acts to connect the local network with a wireless network / wireless the client / your neighbors, at this access point internet connection from where you are emitted or transmitted via radio waves, the size also affects the signal strength coverage area will be covered, the higher the signal strength (size in units of dBm or mW) was getting wider scope. There are several access points that match recommended for your transmitter, eg Engenius Senao, Ubiquty Bullet, Edimax, and Mikrotik RouterBOARD.
To expand the coverage area up to a few km, you will need an external omni antenna, even when you buy the access point is equipped with omni antenna, but not enough because only the magnitude of about 3-5dB, to expand its reach areas, you will need an external omni antenna, the flat- 15dB average strength.
Omni antenna has a radiation beam or 360 degrees, so the match can reach the client from any direction. Omni Antenna recommended brand, is Hyperlink, Finetic, but if your budget is limited you glance there's nothing wrong locally made omni antenna
3. Box Access Point
To protect your access point, then box-shaped protector is required, can be made of plastic or iron plate, the average box is already equipped with a safety lock, and this box should be placed just below the antenna.
Pigtail wires or cables needed to connect jumperl between omni antenna with the access point, note that only the required maximum length of one meter, selebih than that you will experience signal degradation (dB loss) at both ends of the cable connectors which are adjusted with plug-type connector that attached to your access point.
5. POE (Power Over Ethernet)
gar cord is mounted on to "turn on" access point then you need a tool "POE" is the function of electricity flowing through an ethernet cable or UTP / STP, with this tool then you do not have to bother buying another power cord to the top tower, more practical and economical.
Despite the name of wireless devices, but the role is also necessary cables, cable UTP / STP is required for connecting between access point and the network cable at your local LAN, so under she can plug into a computer Gateway / Router or Hub / Switch, choose UTP cable / STP good quality in order to improve the quality of the electric current is passed through the POE.
As a safety from lightning then you need this tool that serves to channel excess electrical load when the lightning strikes to the grounding wire (grounding), this component or commonly known as Arrested Lightning Protector is installed on the jumper cable between the device and access points with external antennas. Grounding for lightning protection is generally planted with a copper rod to a depth of several meters to reach water. Remember that less good grounding will cause the wireless device remains vulnerable to lightning attacks.
In order to obtain the maximum coverage area of coverage, you need to raise external omni antenna to a high place so that your WLAN client can catch you with a good radio signal.
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