Extending the range or scope of reach of your 802.11 system can be made possible by installing external WiFi antennas, particularly the type that comes with Omni-directional or directional attributes and with good gain. WiFi is a radio, and is usually utilized by computer systems. The antenna is comparable to a “speaker system” of a WiFi card. By getting yourself a much bigger antenna, the greater range that your WiFi system will possibly go.
With respect to the setup, directional antennas can be taken advantage of either in a Point-to-Point or in a Multi-Point system. If you are coming from one location, like for example from your router, to another point, we’d recommend that you consider an antenna of this kind. Yagi antennas, panel antennas, and dish antennas — we all classify them as directional antennas.
The omnidirectional antenna will take on the role of the main antenna, the primary function of which is to disseminate the signal towards other devices (such as PDAs, wireless printers, etc ) that are nearby. It will also distribute signals to other computers within a workgroup.
While you can have two Omni-Directional antennas for use in a point-to-point system, we are not going to encourage this due to lack of purpose in distributing the signal if the only thing that you want is to do is go from one point to another. Vertical Omnis, Rubber ducks, Mobile vertical antennas, small desktops, and Ceiling Domes are typical omnidirectional WiFi antennas.
Point to Point
There are always 2 different kinds of wireless points involved in a Point-to-Point system, or some would refer to as building to building type of wireless connections. But cliche as it may sound, in every rule there is always an exception.
Assuming that the access point would just be across a valley and the system owner would like to share his connection to several other multiple users who happen to be just on the same valley but the other side of it. We will classify this as a qualified Multi-Point system but is making use of directional antennas.
Point to Multipoint
Usually, a point to multipoint system is intended for sharing in a Wireless Local Area Network or WLAN. This can be sharing access to ultra-fast Internet access inside your work or home office. In addition, they can also function for wireless access points or WAP such as what can be seen in some establishments like in the street corner coffee shops, airports, truck stops, RV parks, and a host of other kinds of WAPs becoming readily available for public use.
The signal range can be impacted by several factors, and this will include the router or wireless card power output. The wireless card signal receives strength or the cards you want to transmit are also likely to influence the signal range.
Trees and obstruction buildings, which are usually along the transmitting path, could also hamper or cause an obstruction to the range signal. Since there is indeed a sundry of obstructions that can affect your wireless system’s overall performance, we won’t be able to give out an exhaustive list in this area alone. However, the general accepted rule to observe here is to pick an antenna that you will consider as an overkill.
You will ask, why and the reason behind?
Due to the output power being small, it is crucially important to have as much gain as possible. The majority of wireless cards come with a power output, which is around 32 milliwatts (+15dBm). This is the same energy amount that will make a high power light-emitting diode.
These types of lighting systems are bright, but they may not be very visible if you will try to see them from a vast distance, structures, or trees. This explains the reason why amplifying that signal is important and having it as strong as possible is also crucial.
The reason behind why the output would be so very small is because 80.211 devices are operating/running at the same frequency of a microwave oven, which is 2.4 GHz. If it is going to take out a huge amount of energy, microwave popcorn.
Mobile WiFi Antennas
Why would anyone be so interested, would be very keen on having a WiFi antenna in their car? Around everywhere in the country now, there are an awful lot of RV parks and truck-stops that offer users wireless access functionality. As a matter of fact, the majority of the public wireless networks around can be easily and conveniently accessed through your truck, RV, and car.