Selasa, 24 Maret 2009
Tips - tips pan bolic
< strong> Photo: Antenna WajanBolic PURPOSE SCOPE In this Workshop akan WajanBolic made with Antenna Connector and Pigtail N overview WIRELESS / WiFi < span style = "font-size: 85%;"> WiFi (Wireless Fidelity) is a generic term for equipment or WLAN Wireless Lan. Normal family use the standard IEEE 802.11. Therefore supported by many vendors. < span style = ""> STANDARD Protocol < strong> Peralatan wireless used is to use standard IEEE 802.11x, where x is the sub's: style="font-size:85%;"> IEEE 802.11b IEEE 802.11b + < p> IEEE 802.11g style="BACKGROUND-COLOR: 0pt;" 2.4GHz5GHz5GHz < / span> 2.4GHz 2.4GHz 2.4GHz style="BACKGROUND-COLOR: 0pt;" 2 Mbps Mbps54 Mbps108 11 Mbps 22 Mbps 54 Mbps BASIC LAW Minister Decree No.2, 2005 about the use of the frequency band 2400-2483.5MHz who signed on 5 January 2005 the Minister of Transportation aleh M. Hatta Rajasa. Some of the important decision of the Minister of No .2 in 2005 is that you do not need permission from the government radio station to run the equipment at 2.4GHz frequency, but is limited to the: 1st Maximum transmitter power is 100mW (20dBm). 2nd Effective Isotropic Radiated Power / EIRP in antenna is 36dBm 3. All equipment used must be approve / certified by POSTEL < strong> Antenna WAJANBOLIC < span style = "font-size: 85 %;">< strong> < strong> Why is WajanBolic? Because it comes from the frying pan kesempurnaannya not comparable dg parabolic antenna factual. In the workshop will be made WajanBolic Antenna with N Connector and Pigtail with:
Because solid form of the influence of wind dish large enough so that require mounting to a tower strong enough Antenna 2.4 GHz < / p> < p style = "margin: 0pt; font-family: arial;"> Some Antenna Design Example 2.4 GHz Most homebrew wifi antenna you have on the internet: yagi antenna, antenna cans (tincan antenna), antenna biquad, Helix antenna, slotted waveguide antenna. I always have the components in the antenna-design antenna page: N-type Connector & pigtail Connector: N-type Male, Female N-type, RP TNC Male, RP TNC Female, Pigtail Ok ..! we go to the making of WajanBolic Preparation Tools and materials that need to prepare in: MATERIAL EQUIPMENT estimates RATES < strong> < strong> Estimated price spent to purchase materials WajanBolic is less than Rp 100.000, -. Compare jikan you have to buy Grid 24db antenna, the only local product to Rp 500,000, - more and import could reach Rp 1.000.000, - more. Antenna or purchase price of the local grid is Rp 200,000, - while the import could reach Rp 300,000 more. development Then, measure diametr frying pan, frying pan depth and feeder / focus point. For more details please his tough image below. Example: parabolic dish dg D = 70 cm, d = 20 cm the distance from the center point focus dish: F = D ^ 2 / (16 * d) = 70 ^ 2 / (16 * 20) = 15.3 cm page focus on the point end of the feeder is installed. To get the maximum gain. < img src =" http://dedenthea.files.wordpress.com/2007/08/wajan2.jpg "alt =" wajan2.jpg "/> < img src =" http://dedenthea.files.wordpress.com/2007/08/wajan4.jpg "alt =" wajan4.jpg "style =" width: 480px ; height: 281px; "width =" 480 "height =" 317 "/>
To increase the distance range of wireless LAN antenna required with external gain a higher standard of antenna
style="border: 0.5pt solid windowtext; padding: 0pt; width: 100.5pt;color:transparent;" valign="top" width="134">
Some of the lack of antenna WajanBolic: