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WiFi Coverage in Your Home or Office

WiFi is a funny thing.

Not funny HaHa

More like funny What the Hell!

Remember these two important rules when dealing with Wifi

  1. Your mileage may vary
  2. Everything interferes with WiFi

On the Everything list:

  • Walls
  • Windows
  • Doors
  • Microwave ovens
  • Cordless phones
  • Big Screen TVs
  • Other WiFi networks (your neighbors)
  • The phase of the moon
  • Your attitude
  • The cat
  • Barometric pressure

Most of us assume WiFi just goes right through walls, windows and floors without obstruction.  A more realistic view of WiFi is to visualize your space with all the walls covered in mirrors and you’re trying to bounce a laser through it.

Something like this:









Note the placement of the two Range Extenders or Repeaters in this example.
Without actually testing the results you don’t know for sure, but this would be a good starting point.
You may well need one in the conference room as well.


The solid lines assume all doors are open and the signal is free to bounce from wall to wall.

The dashed lines show the lower quality signal as it goes through the walls.  As you can see, some areas get less signal than others as a result.

I’ve had homes where I could not get a WiFi signal out of the room with the router.  Literally.  I don’t know what was in the walls, but whatever it was, it effectively created a Faraday Cage. (Google it)

So, if you want signal everywhere, sometimes you need range extenders.  Or in today’s terminology, a MESH network.

So what’s the difference between using a range extender or Mesh.  Basically it’s this.  With range extenders, each extender creates another WiFi signal with a different SSID.  So you could have 2, 3 or 4 different WiFi networks in your space to connect to.  That’s messy and creates interference (see list above).

For instance:

In the Harris household the router is configured to be HarrisWiFi and that’s what your laptop connect to.  The range extender shows HarrisWiFi-EXT and you have to connect to that when you’re out of range of the main signal.

With Mesh, each mesh device mimics your original network SSID, so you only see one WiFi network in your area and if you connect to it, the mesh keeps you connected as you travel from room to room.  So in the example above, now you connect to HarrisWiFi at any point in the house.  Much simpler.

All this is not as simple as I have just made it out to be.

As I said above, everything interferes with WiFi.  The signal weakens with every wall, door or window the signal passes through.

Most people think a range extender works by putting it in the room where they can’t get any signal.


A range extender works in a room where it’s still got fairly decent signal.  It can only re-transmit what it has to work with.  So if it starts with a weak signal…  That’s what it sends out.  You didn’t solve your problem, you just made it a more expensive problem.

Therefore, the first range extender goes at the edge of still acceptable signal.  The second goes at the edge of good signal from the first and so on.

The same goes for MESH.  but then you only have one SSID to connect to.  And that causes a lot less interference – and makes it easier for your devices to remain connected.

All the years I’ve been installing home and small business networks and WiFi, I’ve found one brand to be the most reliable and that is Netgear.  That’s what I personally use and what I install.  Exclusively. Netgear does not compensate me for this.  They should.  But they don’t.

These are the devices I like and use.

If you want great coverage, this is a really good choice. Solid, configurable and you can enable the VPN for better security

For smaller environments this an excellent choice.

An excellent MESH range extender




If all of this makes you just wring your hands in dismay, contact us for a solution

If you’re local to Dallas, Texas we can come to you – or

We can remote in to anyplace in the world.
(not for WiFi upgrades of course)

DFW Computer Integration
7522 Campbell Rd
Dallas, TX 75248

Name of author

Name: Wizard

Short Bio: The Computer Wizard (TCW). TCW was founded by Warren P. Harris in 1994 to service and repair computers in the San Francisco Bay Area. Relocating the business to Plano, Texas in 1999, TCW continued to flourish when an unfortunate loss of data for a wedding Mr. Harris photographed, caused him to research data recovery options. Realizing he would have to either pay someone to recover the photos or find out how to do it himself, the rest, as they say "is history". Approached by a friend who was a Private Investigator in 2006, Mr. Harris studied for his Investigator's license and began honing his skills in Computer Forensics. The company was renamed DFW Computer Integration in 2015.

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