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How To Find and Remove Wireless Blind Spots

Cover Your Home: How To Find and Remove Wireless Blind Spots  

WiFi is everywhere and, for most readers, that it includes your home. While desktop computers still frequently use Ethernet, the majority of laptops, tablets and smartphones use WiFi; indeed, the latter two often can’t connect to anything but a wireless network, be it your home router or a carrier’s cellular data.
In an ideal world, this reliance on WiFi would be only an advantage, but in truth the technology isn’t perfect. Though more reliable than ever, many homes and businesses still struggle with “blind spots” with low or no coverage. Here’s how to find – and eliminate – these wireless dead zones.

Setting Up A WiFi Analyzer

Before you resolve any problems with your WiFi network’s coverage you need to determine where they exist. If you’re reading this article because you want to resolve a blind spot you already know about, you might be able to skip this step, but gathering more detailed information on the size and severity of the WiFi dead zone can be useful.
A WiFi analyzer is just a conventional computing device (laptop, tablet or smartphone) with software installed that lets you take a closer look at wireless networks in your area. In my opinion an Android device is the best choice because there’s a high-quality analytic app, WiFi Analyzer, available for free. This app can tell you not only the signal strength of your network but also provide information about the strength and operating channel/frequency of other networks in the area. That’s key data because a blind spot can sometimes occur when two networks interfere with each other.





wifianalyzerandroid Cover Your Home: How To Find and Remove Wireless Blind Spots  The second-best choice is a Windows notebook. Laptops running this operating system are popular and there are several software tools available including inSSIDer, Wi-Fi Inspector and NetStumbler. These tools provide the basic signal strength information you need as well as some additional details. The latter two are free, but inSSIDer costs $9.99 per month. In exchange, it provides the most robust feature set and arguably the best interface. InSSIDer also works on Mac.
Linux laptops are not common, but if you have one you can try LinSSID, a free Wi-Fi analyzer available on Sourceforge. It is similar to inSSIDer as it’s developed with that program as its role model.
Users on iOS have few options. The best choice I can come up with is Network Multimeter, but many users complain it is unreliable. Even on my network, which doesn’t have any blind spots, the multimeter can swing wildly for no apparent reason. You could potentially use this for diagnosing complete dead zones but the app lacks the logging, graphing and precise signal strength data it needs.
Once you have decided on the device you’ll use to gauge WiFi strength, you must walk around your home or business using the analytic tool of your choice to read signal strength. I recommend organizing the data with a spreadsheet, categorized by room, listing the strength of WiFi in each corner of the room and in the center. If you’d like a quicker approach, you can focus only on areas you normally sit down to use a laptop or tablet.

Solving Blind Spots For Free

networkmultimeter Cover Your Home: How To Find and Remove Wireless Blind Spots  Now you know where your problems lie – but what do you do about them? There are a few free options that may work.
First, have a look at the channel your WiFi network is using and see if it overlaps with other nearby networks. The best analytic tools, like WiFi Analyzer for Android, can provide this information. Networks that use the same channel may interfere with each other. In a urban area it’s not uncommon to see three or four networks trying to use the same air space. Fortunately, you can resolve this by forcing your router to use a different channel.

routersettingschannel Cover Your Home: How To Find and Remove Wireless Blind Spots  Channel interference isn’t the most common cause of a blind spot, however. That honor goes to the construction of your home or business. WiFi can be blocked by thick concrete walls, plumbing or the earth itself. Any dense object in a direct line between the router and a device can interfere. Redesigning the interior of your home isn’t practical, of course, but changing the location of your router can have the same effect by changing the line between your router and your device. Even moving the router a few feet can have a positive impact, though it may create a new blind spot somewhere else.

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