Wireless Routers

The advent of wireless routers has helped small offices and home computers interconnect and function fast. No more sharing of files with thumb drives or squabbles over who will access the internet fast. If you have notebook or laptop you can keep repositioning your place of work within your house, such is the convenience of wireless networking. With a little bit of planning you can configure a network that suits your business requirements the most.

The task of settling for a particular model of wireless router can be very puzzling. There are many models from various manufacturers and each with many features. Some of the features of wireless routers to check out before buying one are explained below.

Router Functionalities

Firewall

Firewalls are ideal for home networks. They help in protecting home use computers by stalling the destructive efforts of other official websites and potential hackers. This software or hardware device filters the information coming through the internet connection, flagging the information that is not to be allowed through. You can find some such models at: http://www.reviewgist.com/wireless-router-reviews?routerFunctionalities=Firewall

VPN Pass through

VPN pass through feature of routers allows traffic between the endpoints and does not support one of the endpoints. This feature is ideal for routers of home use or small office setups; they are less expensive than a router with full VPN that supports the endpoints. Check these models at: http://www.reviewgist.com/wireless-router-reviews?routerFunctionalities=VPN+Pass-Thru

DHCP server

Dynamic Host Configuration Protocol (DHCP) servers can be implemented for windows based system. The server automatically assigns an IP address to the computer’s TCP/IP stack software. Check out the models having this feature at: http://www.reviewgist.com/wireless-router-reviews?routerFunctionalities=DHCP+Server

Wireless Access Point

The performance of your network will depend on signal strength of the wireless access point. Before you position it, find out the exact location from where it will give the maximum network range. Check out some of the devices at: http://www.reviewgist.com/wireless-router-reviews?routerFunctionalities=Wireless+Access+Point

DSL Modem

Digital Subscriber Line modems are faster than regular modems and can use the existing phone lines. Both internet connection and phone lines for telephone calls can be used simultaneously. Some such models are: http://www.reviewgist.com/wireless-router-reviews?routerFunctionalities=DSL+Modem

Voice over IP gateway

VoIP routers have both wireless networking feature and telephone terminal adapters. With this feature the network can access both Internet and voice communications. Some models are: http://www.reviewgist.com/wireless-router-reviews?routerFunctionalities=Voice+over+IP+Gateway+%28VoIP%29

Protocols

These are formats for transferring data between the various devices. The protocols determine the various aspects of the data like compression types, delivery and retrieval by devices and error checking. The standard protocols differ in their various features, so in order to communicate with other computers correct protocols must be selected.

Internet Protocol (IP) enables unique addressing for computers.

When used with transport control protocol, it is referred as TCP/IP.

The newer IP version 6 is referred as IPv6. This version addresses 16 bytes in length.

DHCP: Dynamic Host Configuration Protocol assigns dynamic IP addresses to devices on a network.

Routing Protocols

The information packets have to be routed by a series of routers to get to its destination. Latest routers automatically exchange route information with other routers through the use of routing protocols.

While configuring the router on your own, you have to choose what types of routing protocol you have to install and configure. Check models with different routing protocols at:

Static routing: http://www.reviewgist.com/wireless-router-reviews?routingProtocols=Static+Routing

RIP version-1: It is a dynamic protocol and automatically figures routing tables on its own, thus manual inputs are not required. http://www.reviewgist.com/wireless-router-reviews?routingProtocols=RIP+Version+1

Encryption Standards

This feature configures the virtual private network, encryption hardware advanced integration modules and the network modules.

Data Encryption Standard – applies 56-bit key to 64-bit block of data. This is the most commonly used encryption standard. A single key is used which is very difficult to break. Some models with this feature are available at: http://www.reviewgist.com/wireless-router-reviews?encryptionStandards=DES

Triple DES (3DES) – applies 3 keys in succession making it more difficult to break the code. Check at: http://www.reviewgist.com/wireless-router-reviews?encryptionStandards=3DES

Advanced Encryption Standard (AES) will be the next encryption standard for commercial transactions in the private sector. Check such models at: http://www.reviewgist.com/wireless-router-reviews?encryptionStandards=AES

MD5 – Check these models at: http://www.reviewgist.com/wireless-router-reviews?encryptionStandards=MD5

SHA 1 – Such models are available at: http://www.reviewgist.com/wireless-router-reviews?encryptionStandards=SHA-1

Modulation

There are many standards of modulation. The most commonly used types are:

QAM: Quadrature Amplitude Modulation, a dominant modulation technique for high speed digital signals.

CCK: Complimentary Code Keying is a modulation scheme to operate in data speeds up to 11Mbps in the RF band.

OFDM: Orthogonal Frequency division multiplexing modulation is used for even higher speeds of 54Mbps.

DSSS: Direct Sequence Spread Spectrum use wideband signals that are not easy to detect and resists jamming attempts.

Security

Today no home and office network is secure. To counter the hacking efforts of hackers, look for good built-in security functionalities. These will ensure that your system doesn’t slow down, those within the range of your wireless are not able to view your files, emails, instant messages, usernames and passwords. Depending on the security features you can also block spams, illegal activities with your internet connection and prevent loading of dangerous software.

This however doesn’t mean your network is completely secure.

Some steps that can be taken are:

 

WEP Encryption length

The WEP encryption is based on a combination of secret user keys and system generated values. The key encrypts and de-encrypts the data that is transferred between the access points and the clients. There are two versions:

Antenna Type

The omni directional antenna of routers broadcast 360degrees around the router. Position them in such a way that you can make the most of the radiating signals.

External antennas can add strength significantly, thus giving a wider range and increased network performance when compared with the performance of in-built antennas. Check models with external antenna at: http://www.reviewgist.com/wireless-router-reviews?antennaType=External+Antenna+x+1

Detachable antennas disable 802.11a lower band communications when detached. On attaching the antenna the lower band is enabled. Thus they can be screwed into the device and can be upgraded easily. Check out different types at: http://www.reviewgist.com/wireless-router-reviews?antennaType=Detachable+Antenna+x+1

http://www.reviewgist.com/wireless-router-reviews?antennaType=Detachable+Antenna+x+2

http://www.reviewgist.com/wireless-router-reviews?antennaType=Detachable+Antenna+x+3

The third type is the internal integrated antennas. These antennas are built-in, and hence cannot be changed or directed. Check at: http://www.reviewgist.com/wireless-router-reviews?antennaType=Internal+%2F+Integrated+Antenna+x+7

Brand Name

Wireless routers are still evolving, and at this infant stage it will do good to stick to one brand. Switching between brands can lead to compatibility problems. Linksys and Netgear wireless routers are among the few companies that have the highest wireless router ratings a company can get.

Linksys

Linksys wireless routers are easy to install and are reputed to give good performance and signal range. The various features that the router supports are protection from hackers with NAT technology, VPN pass through, and can encrypt all wireless transmissions. Most of its models have excellent performance and extremely useful support features. Some of the features are the firewall and routing capabilities, MAC address filtering and virtual server support. Most of the models are easy to configure with the browser-based configuration.

Check out some of the Linksys models at: http://www.reviewgist.com/wireless-router-reviews?BrandName=Linksys

Netgear

Netgear wireless routers have not only superior looks but also good signal strength and wider range. Security features are good and are taken care of with WPA-PSK, WEP (128-bit). Netgear markets wide range of wireless routers for home networking as well as business networking. The selling factors are ease of use, reliability, quality and security.

Check Netgear routers at: http://www.reviewgist.com/wireless-router-reviews?BrandName=Netgear

Apple

Customers loyal to this brand can go in for wireless routers of this brand; they are however priced higher than models of other brands with similar features. Security and support features are good. Check these models at: http://www.reviewgist.com/wireless-router-reviews?BrandName=Apple

 

 

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GPS Buying Guide

GPS units give the electronic routes and voice guided turn by turn directions to your destination. As technology has progressed in this field, you get plenty of models in the market with various accessories and add on features, some extremely useful. The basic features you need to look out for before you buy one are explained in the following sections.

 

Map Capabilities

 

Most GPS models come with internal map capabilities. Manufacturer provides maps with details up to street level in the hard drive. The menu option enables you to access the desired data. Comprehensive street level maps can help you identify the coordinates of the destination on the map by just using the name, or locate the destination on map by giving the coordinates. For some models you will have to subscribe to a plan to update the maps on an annual basis. Check out some models with internal map capabilities at: http://www.reviewgist.com/gps-devices-reviews?mapCapabilities=Internal

 

Some models provide map information in memory cards having detailed information of a particular region. Thus you will need extra cards if you have to store information for more coverage. Map cartridges are more flexible but can prove to be expensive. Check the few models at: http://www.reviewgist.com/gps-devices-reviews?mapCapabilities=Map+cartridges+%2F+Data+cards

 

Models which enable one to download the latest maps are also available. Check such models at:

http://www.reviewgist.com/gps-devices-reviews?mapCapabilities=Download+maps

 

Some brands provide map information in CD-ROM, DVD-ROM discs. Check out one such model at: http://www.reviewgist.com/gps-devices-reviews?mapCapabilities=DVD

 

Receiver type

 

There are 24 GPS satellites in six orbits around the earth. GPS receivers track these satellites to compute the information of your location, the bearing, distance and time left to reach destination and other route options. Since there are 12 satellites at a time in view, each of them is tracked continuously to generate the information. Latest GPS receivers marketed today are commonly 12 parallel channel receivers. You can find some such models at: http://www.reviewgist.com/gps-devices-reviews?receiverType=Parallel-Channel+%2812%29

The associated advantages of tracking more satellites are:

  • faster cold start

  • regular initialization

  • better reception

  • do not require an external antenna if you are in an open vehicle

 

Other receiver types are:

 

Display size

 

Large displays are a visual treat when you consider buying TVs but not the same when it comes to buying a GPS. The map on the display gives you information regarding:

  • current location

  • where next turn is

  • name of street you are turning onto

  • estimated time of arrival

While driving, casting your glance away a second longer can prove to be risky, hence a device with a smaller screen will be advantageous. The display should be easy to read irrespective of surroundings. The navigation aids come in various sizes. Some units with screen size as big as 7in. (http://www.reviewgist.com/gps-devices-reviews?displaySize=7+in.) enable you to get connected to external video devices. Some hand held ones are as small as 1.5in.X 0.9in. (http://www.reviewgist.com/gps-devices-reviews?displaySize=1.5+in.+x+0.9+in.). Some of the convenient easy to read GPS are:

3.5 in. (http://www.reviewgist.com/gps-devices-reviews?displaySize=3.5+in.)

2.8 in. x 2.1 in. (http://www.reviewgist.com/gps-devices-reviews?displaySize=2.8+in.+x+2.1+in.)

 

Resolution

Screen resolution decides how clearly you can see and read in broad daylight. Color, glare free LCDs are soothing to the eyes. High end models have color screens which gives information about weather and terrain. Some GPS units with different resolutions are:

320×240 http://www.reviewgist.com/gps-devices-reviews?resolutions=320+X+240

480×272 http://www.reviewgist.com/gps-devices-reviews?resolutions=480+x+272

 

PC Interface

 

The portable models have a USB or serial ports which gets you connected to a PC. It enables you to download latest maps and system software. GPS units with USB and serial ports can be found at:

USB: http://www.reviewgist.com/gps-devices-reviews?pcInterface=USB

Serial port: http://www.reviewgist.com/gps-devices-reviews?pcInterface=Serial+RS-232

Bluetooth GPS that communicates with mobile device wirelessly are also available. Some can be found at: http://www.reviewgist.com/gps-devices-reviews?pcInterface=Bluetooth+Wireless+Technology

 

Built-in memory

 

With larger memory space one can store more route information and waypoints. Units with software that can transfer data from the unit to a PC can be used to gather more data than it can hold. So depending on how much map data and information you wish to store, you can select the units with the required memory space. You get various models with wide range of built-in memory space.

1 to 30MB http://www.reviewgist.com/gps-devices-reviews?builtInmemory=1-to-30

30 to 512MB http://www.reviewgist.com/gps-devices-reviews?builtInmemory=30-to-512

512 to 2500MB http://www.reviewgist.com/gps-devices-reviews?builtInmemory=512-to-2500

2500 to 40000MB http://www.reviewgist.com/gps-devices-reviews?builtInmemory=2500-to-40000

 

Antennas

 

External antennas are used when stronger signals are needed. If in a vehicle the system cannot be placed near the window, external Antenna hookups can prove to be ideal solution. Choice of external hookups is most practical for hiking under heavy tree cover, under tall buildings or in any place which doesn’t have a good view of sky. GPS devices with external antenna hookup can be found at: http://www.reviewgist.com/gps-devices-reviews?antenna=External+Antenna+Hookup

 

Built-in antennas are less prone to breakage and can communicate with more satellites. Some such devices are available at:

http://www.reviewgist.com/gps-devices-reviews?antenna=Built-in

 

Quadrifilar Helix- This is also an external antenna useful for situations where open sky is limited. Check the models at:

http://www.reviewgist.com/gps-devices-reviews?antenna=Quadrifilar+Helix

 

Flip up antennas too give strong performance. Some such models are at: http://www.reviewgist.com/gps-devices-reviews?antenna=Flip-up

 

Price

This is one factor not to be compromised on, if you don’t wish yourself or your loved ones to get lost in the maze of roads. The technology in this field has developed rapidly and the old models which are cheaper may have crowded maps, or confusing menu options. Latest models high on price have more detailed maps. Of course, lesser the features lesser will be the cost. If you don’t need features like live traffic data or weather data, don’t invest money in models offering these features. Features like speech recognition for hands free operation, 3D maps, and information on fuel prices all come for additional price.

 

Under $200- http://www.reviewgist.com/gps-devices-reviews?Price=59.5-to-199.99 You get good light weight portable navigation units in this range. Maps look great with reasonably timely route recalculations. Good value for money! Those of you looking for more memory space may check out models at higher range.

 

Between $200 to $312- You get better performance and features like anti glare, touch screen with good resolution. You also get good in-built memory space and battery life. http://www.reviewgist.com/gps-devices-reviews?Price=199.99-to-311.99

 

Between $312 to $416- Good screen settings, voice guided directions and overall good performance. http://www.reviewgist.com/gps-devices-reviews?Price=311.99-to-415.45

 

Between $416 to $1172- Accurate route guidance, easy to use and compatibility with Bluetooth cell phones are some attractive features of devices in the price range. http://www.reviewgist.com/gps-devices-reviews?Price=415.45-to-1171.78

 

Brands

 

There are various manufacturers manufacturing GPS units with different features to suit a wide range of customers. The major brands available today are:

 

Garmin has many models of handheld and mounted types. Check its models at: http://www.reviewgist.com/gps-devices-reviews?BrandName=Garmin

 

Magellan: http://www.reviewgist.com/gps-devices-reviews?BrandName=Magellan

 

Mitac: http://www.reviewgist.com/gps-devices-reviews?BrandName=Mitac

 

Lowrance: http://www.reviewgist.com/gps-devices-reviews?BrandName=Lowrance