Introduction: UPDATED !!!! Cheap and Easy WIFI Antenna Signal Booster That Is Better and Quicker Than the Paper Ones !!!

Picture of UPDATED !!!! Cheap and Easy WIFI Antenna Signal Booster That Is Better and Quicker Than the Paper Ones !!!

A new swing on an old idea for improving your WIFI signal!

Step 1:

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I call this WIFI booster ad on the POPtenna because you make it from a plastic pop bottle.
First get a clean plastic 2 liter pop bottle.

Step 2:

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Strip off the label if there is one and wipe down with a cleaner that does no leave a residue.

Step 3:

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Using a large sharpy pen, mark a ring around the bottom and a window that takes up just half of the diameter of the bottle as shown.

Step 4:

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Cut out the window first so the bottle will have stiffness to help with the cutting and then cut off the bottom of the bottle.

Step 5:

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After doing all the cutting, you must clean out the bottle's inside with windex or an equivelent cleaner.
The as you see by the photo.... get out your tin foil and glue stick and get ready for the next step of lining the inside face of the bottle with tin foil and making it as smooth as possible.

Step 6:

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As you can see by the photo, it is only the back of the inside that gets the tinfoil. This is to make a vertical dish to focus the signal beam back into your vertical omnidirectional antenna.

Step 7:

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Now this may be one of the most important parts of the antenna dish. I hope you save the cap because we are going to make an adjuster ring from it. Mark an X on the cap and make a clean cut though both lines. When finished, replace it onto the bottle neck.


Upon a few peoples suggestions..... It has been noted that if you make the cut at the edge and not the center the signal will be much higher. I totally re-did the cap as they suggested and my signal went up from 76% to 90. OK GUYS POINT TAKEN !! So having said that....

Adjust accordingly to follow RIMAR2000's suggestion to move it at least an inch or so closer to the reflector. You were right and I was wrong.

Also if you get a chance, follow the link that RIMAR2000 has on his comment and you will see where he got his information, granted, you will have to translate it, but, if you look at the diagrams... It all makes perfect sense !

Thanks RIMAR2000!

Step 8:

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Now you are ready to place the reflector onto your antenna. Slide the antenna into the center of the X you made in the cap and then force the bottle down over the antenna until the top of the antenna is level with the top of the reflector. Now you place your antenna in a high place and experiment with it by turning it until you see a boost in the signal strength on your computer. This reflector is good because it covers the entire length of the vertical antenna and is very adjustable both right to left and in and out too.

Step 9:

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As you can see I have a very strong signal pick up! Before I had a 30 percent signal and now look at it!
Up to 76% and running great!

Funny thing is to about this is the router is over 100 yards away in our office at the place I live!
They offer free WIFI in the clubhouse and office, but, I can use it from a long ways away now!
Have fun and I hope this helps with any signal issues you may encounter in your WIFI network.

P.S. the antenna that I was using before was a 7dbi antenna and now it is on steroids!


officerswife (author)2017-06-21

My router has 3 antennae, would it be beneficial to use a signal booster for each of them with a large one for the center and 2 smaller ones for the others or would that create interference between them?

rimar2000 (author)2008-10-18

Very cool instructable. But the focus of the reflector is not in their curvature center as you suggest, but approximately halfway the distance. That is to say that approaching the antenna to the reflector approximately one inch, that should enlarge the profit.

darshan16 (author)rimar20002016-04-14

sir it is impossible to do what your saying if the distance is made one inch the signal goes to 23.35% only

BadMonkey63 (author)rimar20002008-10-20

RIMAR2000.... Thanks and take a look at the updated instructions noting your suggestions. the signal went from 76 to 90 upon the information you sent. It took a long time to translate that page, but, it was worth it in the long run. Thanks! Consider yourself a co-designer of this project.

e5frog (author)BadMonkey632012-08-02

What if you took the cut away piece, put foil on that and mounted it on three or four distances?

rimar2000 (author)BadMonkey632008-10-20

Bueno, no es para tanto... (well, isn't for so much... ) Thanks for your info.

npelletier (author)2014-10-13

What if I don't like Diet Coke!? =)

butcher99 (author)npelletier2016-04-11

The residue from the artificial sweetener they use is what gives it the boost. You can use a different soda but make sure it uses the same sweetener you should be ok.

and make sure you do not wash the bottle as that will reduce the effectiveness.

hdawan (author)2016-03-11

what about build in wifi devices :(

mohsinS1 (author)2015-07-21

Its Awesomeeeeeeee

nrajagopal (author)2015-07-09

Thanks Done

Oldiebeezie (author)2015-05-04

You never made mention of the Long white item, that goes through the bottle cap

The long white thing is the antennae of the hub

PattyL.McQuiston (author)2015-03-27

could i just place my usb adapter(via a ext. cord) inside the bottle cover in foil, for a similar result?

UmeedA (author)2015-01-29

  • 1.As the Wilson Amplifier recommends, channel holding uses two 20mhz
    channels to make a 40mhz channel, hypothetically multiplying the velocity. The
    issue is that utilizing 40mhz channels decreases the quantity of non-covering
    channels to only two. Thusly, this implies that impedance with your neighbors'
    Wi-Fi gear is substantially more probable, prompting poor exchange speeds and
    the likelihood of the association dropping out and out. Hence every one of the
    802.11n switches ship with channel holding incapacitated of course. Unless you
    live in a remote territory, utilizing 40mhz groups on 2.4ghz is not suggested.
  • for more
jmsssg2014 (author)2015-01-26

What is your antenna made of or did you buy give specs for antenna Thank you! :)

hamamam (author)2015-01-21

I used it too but , Using this is really professional :

this is amazing topic and I appreciate your effortany way

UmeedA (author)2015-01-05

u know i have used it already but when i bought it was pretty ok for signal boosting .

like your post (Y)

coolio 13 (author)2014-12-30

Who do you connect it with pc???

jej.fef (author)2014-12-11

I made this 3 months ago and am still using it! I've made 3 more for my neighbors and they are rockin free wifi as well. So from all of us to you Bad Monkey63! THANKS A MILLION!!

3 months ago we moved into a Mobile Home Park. They have free wifi, the integrated wireless on my laptop wouldnt pick it up, so I literally had to go into the office to use it. That was BS. So I got a network card, and i picked up a couple of my neighbors networks, but not the one i needed. So i put the network card on the roof, got a few more signals, just BS. So I found your instructable, printed it and made your wifi booster myself. Here is the facts: My network card with your booster behind it, are on the top of a pole that measures 21 feet off the ground. The signal that I wanted originates (and I measured with a walking tape measure) 340 feet away. My network card on it's own (on the roof) picked up 10-12 signals and not the one I needed. With your booster I have (and i just counted) 34 signals and the one I needed comes in LOUD and CLEAR with 5 bars. My neighbors all have the same results, so from us to you, THANKS AGAIN! Jej

macrumpton (author)2009-05-08

I don't know how much a thickness of plastic bottle would diminish the signal, but it occurs to me that you could just leave the bottle whole, and attach the foil on the outside of the bottle. Having the foil on the outside would make it a lot easier to get it smooth, and instead of gluing you could just tape the edges (or even just the corners). Another possibility is to hunt down one of those giant 1 gallon soda bottles (or maybe they are 3 litres) or even a 5 gallon paint bucket for even more gain. One of the cool side effects of leaving the bottle whole is that it would be weatherproof for exterior mounting.

selvol (author)macrumpton2014-11-29


The plastic should not effect the signal.

To test if plastic or will effect Wifi signals.

Place it in the microwave for 30 seconds with a (glass of water so you don't break the oven.).

If it melts if will effect the Signal.

Phoghat (author)macrumpton2011-05-15

Been done. They call it a

macrumpton (author)Phoghat2011-05-16

I don't think you understand a cantenna. A cantenna is more like the radio equivalent of a telescope, while this design is more like a concentrating dish.

jrfoleyjr (author)macrumpton2014-08-02

Actually a Cantenna is a 50 ohm dummy load that was made by Heathkit many years ago. But we used to see how far we could contact each other on the dummy loads. It depended on how many watts were being absorbed by the dummy load.

Phoghat (author)macrumpton2012-08-03

cantenna works BOTH ways, receiving and broadcasting

doo da do (author)macrumpton2011-01-14

I did not see how it was connected to the item looking for a stronger signal

macrumpton (author)doo da do2011-01-15

"I did not see how it was connected "

What is "it"?

selvol (author)2014-11-29

Genius, pure genius. I have made a hundred types of wifi antennae and always seemed to be on the look out for a parabolic surface. Never did this get a second glance.

Thank you

misskhla66 (author)2014-11-20

For those tech challenged people like myself.This boosts via wifi signal and I don't have to do anything to my computer or router?

Just buy an antenna from what dept of store do they have these? Is this something radio shack would have do you think?

I didn't see an answer to what program or software you are using to check boost level?

Thanks everyone

rmique (author)2014-02-09

tanx for the tip sir/mam it does work for me i just hang my modem just outside my door just to have signal and reposition it to the best possible signal that it can receive. i made two of those for my two antennas and now im enjoying it much better than before tanx again =)

mvisakhforu (author)2013-12-20

Dear sir, I have done all the steps except 9th one. Please tell me how to verify whether my Signal booster is actually working or not. Suggest me a software or any other method

davijordan (author)2013-11-21

We found that the booster made our antennas ver directional, so that we did not get as many stations. But if you wanted to zero in on a particular antenna, it might be more useful.

ChinaMike (author)2013-04-29

really nice photo of a box of foil. I am so glad you took that photo or I would be lost...

talhaijaz (author)2012-10-20

how ican make wifi with greater speed

talhaijaz (author)2012-10-20

how ican make cheap wifi with greater speedge

WIFIENGINEER (author)2010-05-11

A very creative use for the heavily discarded 2 liter bottle.

However, any flat metal surface spaced about 1/4 wavelength behind the same antenna would likely produce similar results
IE 3 db of gain

But for being green I give it 4 stars!

e5frog (author)WIFIENGINEER2012-08-02

How far away in this particular example is a 1/4 wavelength?

I'm guessing something around 3 cm?

mgalyean (author)e5frog2012-10-03

Yep. A full wavelength is just under 5 inches. A 1/4 WL is 3.125 cm (websearch "rf wavelength calculator; or try this .

The main issue with this antenna is it isn't a parabola. WIFIENGINEER is correct, a flat panel 1/4 wl behind it would work just as well. A real parabola, with 180 degrees of "surround" could get into double digits of gain however.

Daniel Morales (author)2010-04-25

Hi, I ordered a Alfa 100mw adapter on Ebay, and am thinking of biulding this!, hmmm how mucho signal would I get with the included 9dbi 15" antenna? will post results! ;-p

bird8898 (author)Daniel Morales2010-06-22

Hi, what is the result?

wintergoat (author)bird88982011-02-26

Yeah, what IS the result?

Still no result?

bradpugsley (author)2009-09-09

Could you possibly show a picture of the cap cut on the edge... Sorry I just want to be sure I do it right. Thanks!

nickolaiisoe (author)bradpugsley2012-08-28

ya dono what u mean!

paulomichael (author)2009-04-26

nice ! the bottle could also be used as a candle holder&reflector;.

macrumpton (author)paulomichael2009-08-10

and a solar cooker for cocktail wienies!

dickiejoe (author)2009-06-06

has any one else noticed trendnet cant spell?

About This Instructable




Bio: I'm just old me and you are you! so let's keep it that way Hmmmm mokeyboy?
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