Assemble Homebrew Antenna 2.4GHz

Assemble Homebrew Antenna 2.4GHz "explained as follows,
Omni antenna has a radiation pattern that spreads out in all directions equally, so suitable for use as an antenna access point.

Diagram Antenna Omni Collinear 2.4GHz

Diagram Sambungan Antenna Omni 2.4GHz ke Access Point

Material
PVC pipe 1 inch in length is adjusted with the antenna element
Close the pipe 1 inch: 2 pieces
Email wire diameter: + / - 1 mm
N-type female connector
Pipe clamps: 2 pieces
Bolts to taste
Foam plastic taste

Making way
Prepare necessary materials
Install N-Connector to cover 1 inch pipe that will be displayed on the bottom.

• Replace the plastic foam formed lingkarang which split in part to the support email for center wire in the pipe and not crooked.

• Enter your email wire have fitted plastic foam into the pipe.

• Solder wire to the inner end of the bottom of the email n-Connector.
  Put the two close the pipe.

• Prepare the clamps as shown below. Using any insulating material that is strong enough and durable when installed in outdoor. White plate on the picture below is made of ½ inch PVC pipe that is heated and then pressed. Arches that form the letter C is made of 1 inch PVC pipe that split roughly ¼ of the circle.
  Attach clamps to the omni antenna.

• Connect the antenna to the antenna mast pipe as shown below

SETTING RB 711

LAPAN: Symbol 'UFO' in Sleman Not Because SUTET and Wind

Jakarta - A resident said there were Channel High Voltage (EHV transmission lines) above the symbol of the mysterious 'UFO' in the rice fields in Sleman, Yogyakarta. Institute of Aviation and Space Agency (LAPAN), ensure that the symbol has nothing to do with SUTET located nearby. "There is no mechanism for electromagnetic forming patterns. Rice is not on the electromagnetic berpenguruh. No, not because SUTET," said Research Professor of Astronomy Institute of Aeronautics and Space Agency (LAPAN), Thomas Djamaluddin told AFP on Sunday (23/01/2011). Djamaluddin convinced that the mysterious emblem was created by humans. That's because in other countries who had a similar thing happened in the end it was revealed that the conduct is human. "Is it far from residential area citizens? Then maybe it is engineering because there were no witnesses. Even if close to the settlement residents, meaning it is done without the knowledge of local people," he explained. When asked about the possible causes are natural factors such as a tornado, Djamal also denied it. "If you see from the picture, not tornado may form a neat pattern. There's no way natural that make this neat pattern," he added. Previously reported, the citizens of Sleman, Yogyakarta, dihebohkan by signs that appear mysteriously in the rice field after the winds. Locals believe the giant ring-shaped mark it as the landing of the aircraft 'UFO' from another planet. The symbol is a circle 70 meters in diameter. In the middle circle there is a symbol of the mysterious giant. The sign is formed by a stretch of rice that fell after the high winds. Police also confirmed the emergence of a mysterious symbol 'UFO' is. Police even had to capture these rare events.

source http://www.detiknews.com/read/2011/01/24/080418/1552780/10/lapan-lambang-ufo-di-sleman-bukan-karena-sutet-dan-angin?9911012

HOW TO POST MINI CCTV home

CCTV is now often encountered in every public areas such as malls, campuses, offices, shopping centers and others. The benefits of CCTV themselves will feel useful as a tool for security, where every activity that happens we can monitor live anytime and from anywhere, can also be utilized to record the incident as evidence in future. Maybe you are a business owner who is often lost, for example, may lose a motorcycle, or home robbed but you do not have proof. CCTV in this case can be very helpful. Unfortunately the price and its general CCTV installations for products that * original * price is quite expensive for a service like that. Average cost of CCTV installation generally achieve air-million-million rupiah.

As we can outsmart to build its own CCTV in a small area with a very minimal capital. Equipment is also fairly easy to get, just armed with a web camera (webcam) with which we are known more widely used to advance * event * show off the beautiful woman on yahoo messenger, And with trial software that if we require further use we have to pay. Let's try to do the illustrations how to make your own CCTV with minimal capital and simple explanations.

Equipment needed:

A PC / Laptop as a host (if you can live 24 hours with special terrabyte HDD capacity for those who want to capture or record all activities).

1. A Webcam / Web Camera as a means of imaging, usually varying However the price of this webcam is still relatively cheap. What I recommend is a webcam that has a minimum resolution of 1.3MP, with good lighting levels, Sukur Sukur if possible, to feature night vision.
2. A program, in this experiment I use webcamXP with limited 1 source camera, if you need more than one must pay.
3. 

Installation:

The first step in connecting your computer with a webcam, usually quite easily simply by installing the default drivers from the webcam.

The second step to install the program and start webcamXP webcamXP configuration according to your needs, for example you want to capture or record all the events. When you finish installing your webcamXP the program simply select the source of the existing equipment that is by right-clicking on the screen area webcamXP, after that, choose your camera equipment and also may be able to add a microphone when in need of sound.

After you've finished it actually, you simply do additional configuration to make it more fun. Suppose you want to monitor your home from such a distance out of town. Simply by doing a web configuration you can see the condition of your home from anywhere.

* NOTE: YOU NEED INTERNET CONNECTION.

From the above experiment I did not try to use the internet connection so that no longer require a special setting for the modem. For the trouble it's easy ... just ... do your own network configuration, open ports in need

Setting Mikrotik Wireless Bridge

Setting Mikrotik Wireless Bridge

Often times, we want to use Mikrotik Wireless for point to point solutions to bridge the network mode (not routing). However, RouterOS itself is designed to work very well in routing mode. We need to do some things so that the wireless link we can work to bridge mode.

Bridge mode allows a single network affiliated with the network on the other side in a transparent manner, without needing to go through routing, so that the machine is on a network that one can have IP addresses that are in a same subnet with the other.

However, if our wireless network is quite large, this bridge mode will make wireless traffic increases, since there will be a lot of broadcast traffic from one network to another network. For a network that is large enough, I recommend the use of routing mode.


Here is a diagram of our network will set. 

Configuring the Access Point

1. Make a new bridge interface, name bridge1 
2. Enter into the interface ethernet bridge
3. Enter the IP address on interface bridge1

4. Next is a wireless interface settings. Click on the Wireless menu (1), choose the tab interface (2) then double click on the wireless interface name that will be used (3). Select AP-bridge mode (4), find the ssid (5), the band 2.4GHz-B / G (6), and the frequency to be used (7). Do not forget to activate the default authenticated (8) and the default forward (9). Then aktifkankanlah wireless interface (10) and click OK (11).



5. Next is the configuration of the WDS on the wireless interface is used. Open up the back like a wireless configuration steps above, select the tab WDS (1). Determine the dynamic WDS Mode (2) and choose the bridge for WDS interface is (3). Then press the OK button.



6. The next step is to add a virtual interface is WDS. Add new WDS interface as in the picture, then choose the wireless interface that we use for this WDS. Then press OK.

7. If WDS was added, then the new WDS interface will look like in the picture below.



Configuring the Wireless Station

Configuring the wireless station is similar to the steps above, except the step to enter the IP Address and wirelessnya configuration. In the station configuration, the mode is station-WDS, frequency need not be specified, but must determine the scan-list in which the frequency of the access points included in the scan list. For example, the access point we determine the frequency of 2412, the write scan-list 2400-2500.


Checking links

If we make the wireless link is working properly, then the wireless menu, will show the status of R (see figure below).


In addition, mac-address of the connected wireless can also be seen on the registration window (see picture below).



Configuring wireless network security

In Mikrotik, the easiest way to maintain the security of the network is to register the mac-address pairs in the wireless access list. This must be done on the access point or on the client side. If penginputan access-list has been done, then turn off the default authenticated on the wireless feature, then the other wireless mac addresses not listed will not be able to connect to our network.