Powerful Wi-Fi gun antenna

This is an easy to manufacture and very powerful Wi-Fi antenna like a cannon. With its help you can receive and transmit a Wi-Fi signal not only over hundreds of meters, but over several kilometers!
The antenna-gun resembles the appearance of a space blaster and, just like this fantastic weapon, has a directional and very powerful effect.
Powerful Wi-Fi gun antenna

This is a directional antenna. And it is this property that gives a long reception distance due to the high concentration of the signal in one direction.
Powerful Wi-Fi gun antenna

Antenna diagram


Powerful Wi-Fi gun antenna

The drawing shows the dimensions between the antenna elements. Its resonant frequency is set to the middle of the Wi-Fi frequency of 2.4 GHz.

To make an antenna you will need


  • Long stud with nuts.
  • Metal sheet, I took copper because it is very easy to cut. In general, you can take tin from cans.
  • Wi-Fi Adapter. But you can connect to an existing router.

Powerful Wi-Fi gun antenna

Making a powerful Wi-Fi gun antenna


Before you start making an antenna, you need to know that any deviation from the specified dimensions will greatly deteriorate its performance. Therefore, everything needs to be done as accurately as possible.
We take a sheet of metal and roughly mark the centers of the diameters of the circles. Then we drill the center.For accuracy, before drilling, place a core or go through a thin drill, and then a thick one. As a result, the diameter of the hole should be slightly larger than the stud.
Powerful Wi-Fi gun antenna

Then we take a compass and draw circles on the metal.
Powerful Wi-Fi gun antenna

First cut out a square.
Powerful Wi-Fi gun antenna

Then carefully cut out a circle.
Powerful Wi-Fi gun antenna

The result was circles for the antenna.
Powerful Wi-Fi gun antenna

I took a long hairpin. I cut off the excess along the length of the antenna, taking into account the width of the nut.
Powerful Wi-Fi gun antenna

Here is the finished kit for assembly.
Powerful Wi-Fi gun antenna

We assemble the antenna. Everything is very simple, like a construction set in childhood.
Powerful Wi-Fi gun antenna

To control dimensions, I recommend using a metal ruler, as it is more accurate.
Powerful Wi-Fi gun antenna

In the last two disks you need to make holes for connecting the cable.
Powerful Wi-Fi gun antenna

We will make a connector with a cable from an old antenna from a router or adapter.
Powerful Wi-Fi gun antenna

Remove the top casing.
Powerful Wi-Fi gun antenna

Cut off the insulation. The antenna came off on its own because it was pressed in.
Powerful Wi-Fi gun antenna

Next, unsolder the metal cap.
Powerful Wi-Fi gun antenna

And the connector for connection is ready.
Powerful Wi-Fi gun antenna

We tin the wheels. Copper is great in this regard. I once made such an antenna from an old computer case, so I had to tin it with acid.
Powerful Wi-Fi gun antenna

Powerful Wi-Fi gun antenna

We pass the cable through the hole in the last circle and solder the shielding winding to the disk.
Powerful Wi-Fi gun antenna

Powerful Wi-Fi gun antenna

Powerful Wi-Fi gun antenna

Now we pass the middle core into the hole of the second disk and solder it.
Powerful Wi-Fi gun antenna

Powerful Wi-Fi gun antenna

The antenna is almost ready. I will install it on the camera bracket. There will be such a home option.
Powerful Wi-Fi gun antenna

Screw it to the connector output Wi-Fi adapter.
Powerful Wi-Fi gun antenna

You can tape it with electrical tape or tape to the bracket.
Powerful Wi-Fi gun antenna

I will put the antenna on the window and point it at objects where there may be a signal.
Powerful Wi-Fi gun antenna

Wow, how many networks have appeared. Although previously I only caught a signal from my router. There are not many access points in our city.
Powerful Wi-Fi gun antenna

The result is amazing.
Powerful Wi-Fi gun antenna

Powerful Wi-Fi gun antenna

Add-ons


To enhance the effect, I decided to install such a cannon on the roof. But to do this, I need to solder a regular shielded cable, which I use for a satellite dish, instead of a connector.
Powerful Wi-Fi gun antenna

Powerful Wi-Fi gun antenna

Let's drill the hole a little and modify the cable plug.
Powerful Wi-Fi gun antenna

Powerful Wi-Fi gun antenna

We fix it with electrical tape.
Powerful Wi-Fi gun antenna

We put it on the roof, placing it on a pole.
Powerful Wi-Fi gun antenna

Powerful Wi-Fi gun antenna

The number of networks exceeded all my expectations.

Result


The result was that a single type of antenna can be used to communicate over a distance of about 10 kilometers without any problems! And this is without any amplifiers or special equipment.
With the help of such a powerful Wi-Fi gun - antenna, you can transmit a signal to the garage, work, school, or country house. All materials are available to absolutely everyone, and everything is done very simply.

Watch the video


More detailed assembly instructions can be found by watching the video below. It also shows more extensive testing of this powerful Wi-Fi antenna.

PS: If you are making an outdoor version, then for insulation and against corrosion it would be a good idea to paint the entire antenna with regular metal paint.
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Comments (69)
  1. Alexei
    #1 Alexei Guests 19 March 2018 19:06
    4
    And for a smartphone you need to make the same antenna, otherwise you will end up with a one-way connection, and it’s not a fact that it will work, the smart has a weak output stage.
  2. Guest Victor
    #2 Guest Victor Guests 19 March 2018 19:14
    3
    In principle, the VHF range has been studied.. But many transmitters are able to correct the accuracy, for example..
    Which is probably in demand at Transport Hubs or on Trains. I myself am trying to increase the sensitivity of the circuit and propose that the rod of your Antenna be made from a hollow tube. Next connect to New
    version of a portable radio station. In other words, make the transition to Universal Super Heterodyne
    Antennas. So to speak, without waiting for the Mysterious Redneck Investor. The fact that you wiped their Nose. It's obvious
    fact. Thanks for the useful Thing. Good luck in your creative activities. Try writing to the Institute
    Radiophysicists..
    1. TRX-Guest
      #3 TRX-Guest Guests March 24, 2018 12:28
      9
      2.4 GHz is no longer VHF. And what are superheterodyne antennas? I have been doing radio for many years, this is the first time I have heard about superheterodyne antennas. Those. Is this an antenna with signal conversion up or down in frequency with a built-in local oscillator? How is that?
  3. Saveliev Viktor Nikolaevich
    #4 Saveliev Viktor Nikolaevich Guests 19 March 2018 21:27
    7
    I watch your video so many times and I’m glad that there are still “KULIBINS”!!!!
  4. Alexei
    #5 Alexei Guests March 20, 2018 00:48
    10
    Experiments on reception range were carried out with direct visibility, or is the tree not a hindrance?
  5. Guest Valery
    #6 Guest Valery Guests March 20, 2018 08:52
    3
    Is it possible to make the same or similar gun for a digital TV set-top box? What are the dimensions, how to calculate?
  6. Alexander
    #7 Alexander Guests March 20, 2018 09:09
    0
    What about the concept of electromagnetic compatibility and interference from an uncertified transmitting device to neighboring electronic devices? There are cases of powerful interference caused by routers purchased in China through a well-known service. So they interfere with security alarm and video surveillance devices, making their operation impossible. It is unlikely that your neighbors will thank you for using such an invention.
    1. Basil
      #8 Basil Guests 21 December 2018 13:44
      1
      So this seems to be illegal!
    2. Yak
      #9 Yak Guests 13 August 2019 15:45
      4
      This is not an emitter, it is an antenna.
  7. Mitka
    #10 Mitka Guests March 20, 2018 10:31
    1
    A person from the category heard the ringing but does not know where it is. Made with the worst mistakes. Who needs a similar antenna, collect many circuits with calculations from a jar on the Internet.
  8. Alexander
    #11 Alexander Guests 20 March 2018 22:16
    4
    In order to make such an antenna, the manufacturer needs to learn on his own. The connector and cable are on 75ohm, the signal loss is crazy. Everything is done through the ass... At an angle.
    1. Guest Sergey
      #12 Guest Sergey Guests March 21, 2018 10:43
      3
      Yes, the author has never heard of matching an antenna and cable. Actually, this antenna is a variation on the theme of the famous “wave channel”. Only the directors and reflector are made not of a rod/tube, but in the form of disks. Due to this, the antenna bandwidth should expand.
      1. Vov4ik
        #13 Vov4ik Guests March 24, 2018 12:07
        6
        If everything were not consistent, the author would not have accepted so many access points. Quite a normal design. The cable uses 75 ohms, and there will be no “insane” losses on SMA, as you claim.
        1. TRX-Guest
          #14 TRX-Guest Guests 27 March 2018 22:17
          4
          The problem is not attenuation. And in SWR.With an SWR greater than 2 and with milliwatts of power supplied to the antenna, the output stage will not fail, but the output will be poor, and accordingly there is a high probability of not connecting for free.
    2. Guest Alexander
      #15 Guest Alexander Guests 8 February 2019 13:50
      3
      Since what the hell...? Maximum 2-3dB. But it’s cheap...And the losses in the cable itself are 50 Ohms more than in 75 Ohms. It's better to lose 3dB on mismatch than an extra 10dB in the cable over a long cable length
  9. Guest Mikhail
    #16 Guest Mikhail Guests 21 March 2018 13:06
    0
    Last summer I put together something similar, only for reliable reception of a 4G flash router. I took the sizes on the Internet, compared them with what is on sale, and adjusted them. And put it on the table. I was stupidly afraid of the router falling. Only mine has two tails.
  10. Zhorik
    #17 Zhorik Guests 21 March 2018 21:53
    5
    Cool video. The guys released a video about making a similar antenna for receiving 3g and 4g, as well as wifi at 5 GHz. It’s a pity that they don’t have a formula for converting to other frequencies :-(