DIY do it yourself
Master classes, instructions, useful tips, recipes.
» »3G 4G antenna with a range of more than 30 km
3G 4G antenna with a range of more than 30 km

Living far from the towers of mobile operators there are problems with coverage. The available signal does not even allow you to make calls, not to mention the reception of 3G and 4G Internet. Similar problems can be easily solved if you assemble a powerful antenna. This can be done with cheap materials. The antenna is capable of picking up a signal even 30 km from the tower.

Antenna Materials


To build, you will need:
  • Threaded stud M6 or M8 140 mm long;
  • stud nuts - 12 pcs.;
  • thin tin from any metal;
  • coaxial cable up to 12 m long - 2 pcs.;
  • Pigtail connector with adapter - 2 pcs.;
  • F connector for TV cable - 4 pcs.

The necessary theory


Antenna options are different for 3G or 4G internet. The frequency range at which the desired operator operates is important. To assemble the correct antenna you need to find out. To do this, go to the phone’s network settings and search for network operators. In the issued list with a lot of 2G positions, you need to search only 3G and 4G. Knowing which operator provides the necessary coverage in the area, you can buy a suitable SIM card.
3G 4G antenna with a range of more than 30 km

3G 4G antenna with a range of more than 30 km

3G 4G antenna with a range of more than 30 km

3G 4G antenna with a range of more than 30 km

3G 4G antenna with a range of more than 30 km

3G 4G antenna with a range of more than 30 km

When assembling the antenna, it is important to observe all sizes up to a millimeter. For each type of network they are different. Typically, a 4G network operates at a frequency of 2600 MHz, in 3G - 2100 MHz. Sometimes 4G and 3G have a frequency of 1800 or 850 MHz. If when searching for a network it was not possible to find an operator for 3G and there is no information about its frequency, then it is better to make an antenna for the parameters of 2100 MHz, so there is a higher probability of picking up a signal.

Antenna assembly process


I will collect the 3G antenna 2100 MHz. The manufacturing process for devices of different parameters is similar, but differs in the diameter of the segments and the distance between them. First you need to cut 6 discs from tin. I use thin sheet copper, as it is easily cut with stationery scissors. The diameters of the antenna segments according to the scheme should be 100, 74, 54, 39, 39, and 39 mm.
3G 4G antenna with a range of more than 30 km

3G 4G antenna with a range of more than 30 km

Since it is important to comply with the dimensions up to a millimeter, it is better to first drill a hole for the diameter of the existing stud, and after that draw a pair of compasses on it to cut the disk.
3G 4G antenna with a range of more than 30 km

On a disk with a diameter of 74 mm, you need to prepare a hole for soldering the wire core. It is drilled at a distance of 11 mm from the edge. This antenna when working with the 3G range requires the connection of 2 coaxial TV wires. The length of each of them should not exceed more than 12 m. The second hole must also be drilled at a distance of 11 mm from the edge, but at an angle of 90 degrees relative to the first.
3G 4G antenna with a range of more than 30 km

Now, having attached a 74 mm disk to a large 100 mm segment, you need to make a marking for large holes for entering a coaxial television cable along with a braid.
3G 4G antenna with a range of more than 30 km

From a pair of ordinary television F connectors, you need to break off the protruding part, as I did, and press them into the existing holes on the 100 mm disk. For reliability, it is better to squeeze the connectors a little.
3G 4G antenna with a range of more than 30 km

Now you need to fix the discs on the stud in the order indicated and in compliance with the distance proposed by the circuit. The distance between the segments of 100 and 74 mm is 10 mm, in the next transition between the disks the distance will be 9, 33, 33 and 33 mm, respectively. Each element is fixed with two nuts, one on each side.
3G 4G antenna with a range of more than 30 km

When assembling, you need to double-check the distance between the disks, since deviation will lead to a decrease in signal reception quality.
3G 4G antenna with a range of more than 30 km

Next, you need to connect the coaxial cable to the large drive. This must be done so that the central copper core of each wire enters a thin hole in an adjacent segment with a diameter of 74 mm. After installation, the wire must be soldered, in no case bending.
3G 4G antenna with a range of more than 30 km

To the protruding tail of the stud on the back of the antenna, you need to attach a wooden, plastic or metal bar that acts as a holder.For reliability, coaxial cables can be tied to it so as not to put a strain on the thin tin disk to which they are soldered.
3G 4G antenna with a range of more than 30 km

3G 4G antenna with a range of more than 30 km

Now you need to fix the Pigtail connectors with adapters to the free ends of the coaxial cable. They are the ones that connect to the 3G 4G modem. All the antenna is ready, it remains to install it.
3G 4G antenna with a range of more than 30 km

3G 4G antenna with a range of more than 30 km

If there is no jack.
3G 4G antenna with a range of more than 30 km

Customization


3G 4G antenna with a range of more than 30 km

To achieve maximum reception quality, you need to bring the antenna outside the room. It needs to be placed a little higher than the roofs of the nearest buildings in order to minimize possible interference and prevent noise. You need to direct the antenna directly to the nearest tower, which broadcasts the Internet signal. To find out where it is located, you can use the Netmonitor application. Such a simple antenna is able to pick up a signal from towers located at a distance of even more than 30 km.

Watch the video


For detailed tests and antenna manufacturing see the video
come back
Comments (55)
  1. Guest Sergey
    #1 Guest Sergey Guests December 18, 2018 10:20
    6
    Very similar to opa, but no one bothers to try. I’ll try.
  2. Guest Gennady
    #2 Guest Gennady Guests December 18, 2018 10:33
    19
    antennas are not weak, strong, powerful, cool (no offense to the author). If someone passed the AFU exam (antenna-feeder devices) they know that the antenna is characterized by three main parameters - operating frequency, bandwidth and gain, there are also KBV and SWR, the nature of the load (capacitive, inductive, active) but this is not so important . Now, if you (and others) brought these characteristics - it would be great. You can measure these parameters with the help of a simple beacon assigned to 100-200 meters and a measuring receiver. Of course, not everyone has a receiver ..... sorry ........
    1. Guest ALEXANDER
      #3 Guest ALEXANDER Guests January 7, 2019 4:34 p.m.
      2
      Sorry, but what is the gain of a passive system? This is called the KND directivity coefficient!
  3. Onandyn.
    #4 Onandyn. Guests December 18, 2018 10:49
    26
    Aftor is a prankster, in places with a minimum signal level the modem will work without this stray, where the signal is extremely weak, a two-way one is needed !!!!!!! amplifier. The modem is not a radio receiver, it will not work without sending a signal to the base station. Neighing.
    1. nemo
      #5 nemo Guests December 18, 2018 12:56
      0
      but how do you explain the fact that the cars used to have antennas for mobile phones too ??)))
      1. bugulmek
        #6 bugulmek Guests December 20, 2018 09:13
        1
        amplifiers have not been canceled
        1. reminin
          #7 reminin Guests December 25, 2018 23:33
          3
          The antenna is the amplifier. and this amplifier works without an external power source. And this is an amplifier with a minimum amount of noise. The signal amplifier "on electricity" amplifies both the signal itself and the noise in this signal.
          1. Guest Alexander
            #8 Guest Alexander Guests January 7, 2019 4:41 p.m.
            0
            And again, for smart people, an antenna is a passive system and it does not have amplification; it is characterized by other characteristics such as KND directivity coefficient; an antenna is an open circuit; in other words, a coil with resonance in a certain range, learn physics !!!
    2. Konstantin
      #9 Konstantin Guests December 18, 2018 13:35
      4
      In addition to the useful signal, repeaters increase the entire band, including noise, and also introduce their own distortions, which negatively affects the signal-to-noise ratio. Which, in turn, reduces the bandwidth of the connection.
      A good antenna with good gain, connected directly to the corresponding connector, is a much more efficient option in practice. However, it is also necessary that the cable has a low level of attenuation.
    3. Guest Michael
      #10 Guest Michael Guests December 18, 2018 2:07 p.m.
      2
      The modem also emits using this antenna.
    4. aszxx
      #11 aszxx Guests December 18, 2018 15:08
      2
      2nd cable for the transmitter, sort of.Otherwise, why the hell at all? The directional antenna is an amplifier.
      1. Guest Alexander
        #12 Guest Alexander Guests July 3, 2019 18:20
        0
        The second wire for a different polarization. There is a vertical, there is a horizontal. So in an antenna made of round disks, a double connection is usually used - one wire to one disk, the second to another. Then the antenna will work in two polarizations. Such antennas are called like MIMO. I advise you to look for instructions on how to assemble such an antenna. It will be more efficient and easier to manufacture, since it has only two disks.
    5. Guest Vlad
      #13 Guest Vlad Guests December 18, 2018 19:54
      0
      But is the antenna not receiving-transmitting i.e.
    6. Guest Sergey
      #14 Guest Sergey Guests December 18, 2018 11:34 p.m.
      6
      Learn physics, the transmitter in this case does not smear the power in the district, but with the help of the antenna it concentrates in a certain direction, I can also neigh over you ...
      1. kegelme
        #15 kegelme Guests December 20, 2018 09:14
        1
        only with standard connection
    7. ivan
      #16 ivan Guests December 20, 2018 19:59
      1
      just that this antenna works in the opposite direction, that is, on the transmission
  4. Guest Oleg
    #17 Guest Oleg Guests December 18, 2018 12:20
    0
    Nuts and a copper stud still - it would be generally good;)
    1. Guest Sergey
      #18 Guest Sergey Guests April 2, 2019 11:45
      0
      Why copper? Gold can be! And you can generally drive nails with a tester and a hat into the wall! Where the stud and nuts are in general zero potential, there is at least a piece of wood, even copper, even cast iron, even textolite - the main thing is the external dimensions of the vibrator, reflector, directors and the distance between them, and the stud and nuts do not play any role from the word at all! Unless on the strength of the structure and if it is metal it can (and must) be grounded - an excellent lightning protection will be when installing a high mast!
  5. Innocent
    #19 Innocent Guests December 18, 2018 2:39 p.m.
    5
    Lies! Did
  6. Zhorik
    #20 Zhorik Guests December 18, 2018 19:54
    3
    Yes, it’s our lads from Lugansk who master.
  7. Radio engineer
    #21 Radio engineer Guests December 19, 2018 09:12
    5
    Connect TWO cables to ONE antenna - NO ONE has thought of this before! To the author - the Nobel Prize in Physics!
  8. Alexey Ageev
    #22 Alexey Ageev Guests December 19, 2018 10:42
    0
    Did this for Wi-Fi. I connected it to the router and sent it to the router, which was on the 5th floor by the window from the parking lot 150 meters away. The signal was one stick, 1Mbit was stably issued for downloading and some pennies for sending. It was necessary to direct very accurately.
    I also had a Chinese Wi-Fi “plate” with me, they sell such black and white at 500 rubles, with her the result was the same.
    Maybe I didn’t assemble the antenna accurately enough, but the result of the experiment is this)
  9. Guest Alexander
    #23 Guest Alexander Guests December 19, 2018 12:33
    6
    Even the photo shows that the antenna has a large capacity of its own. This indicates its broadband and a small coefficient. gain. Add a cable to it and all the "gain" will go into a big "minus". There is no point in messing around with this “toy”. And as for the weak signals, I generally keep quiet .......
  10. Qteam
    #24 Qteam Guests December 19, 2018 19:43
    4
    So - I did not understand - the F-connector usually connects to the cable braid. You connect to the first pancake. From the first pancake to the second there is contact on a metal stud. The second pancake connects to the central core. - as a result, we get one common cable at the end of which a knob was added. Where the pancake potential difference then you will live? Between the antenna itself and the ground. The higher you raise - the better it will catch - and spit on the distance between the pancakes - you have a braid on the main waveguide.
    1. Guest Anatoly
      #25 Guest Anatoly Guests December 20, 2018 19:47
      4
      what nafig potential difference, there are GHz frequencies.
      1. Borga
        #26 Borga Visitors July 20, 2019 1:23 p.m.
        0
        But aren’t they there? Shnobelevskaya in the studio !!!
      2. Borga
        #27 Borga Visitors July 20, 2019 1:49 PM
        0
        this very potential difference is Always. here we mean nodes and antinodes that in the radio band (any) are present without fail. Your product a priori does not have polarization, and therefore, outstanding ability to "amplify" the signal. Can you remember the antennas of the "Lunokhod"? accuracy is needed there - spit on polarization, upload a megawatt for control and receive a signal with a 25-meter parabola and figs on it, on polarization .. from the ship, and why, let the bourgeoises tremble. Oh, odd I'm not there - sorry ..
  11. Vitaliy
    #28 Vitaliy Guests December 19, 2018 21:42
    1
    And will this all-metal construction work? With the same success, you can use the usual metal pin.
    1. Guest Alex
      #29 Guest Alex Guests December 20, 2018 13:48
      1
      This design will not be, but not at all because of the "all-metal". Have you heard of SWR and half-wave vibrators? Elementary course AFU.
  12. ku
    #30 ku Guests December 19, 2018 21:59
    1
    Well, we are waiting for the next "guns"! on the 1st multiplex the 31st channel: 554 MHz and the 2nd multiplex the 51st channel: 714 MHz. For Lugansk, of course, it is not relevant, but for Russia, from the New Year and the summer house, it is very necessary. For the analog TV is turned off. We are grateful!
  13. Thomas
    #31 Thomas Guests December 20, 2018 09:09
    4
    2-3 pancake according to the 9mm scheme, and in the photo there are two nuts, judging by the description of at least M6, each 5 in height. It smacks of "design documentation" "from the sheet", it would lie ....
  14. Guest Roman
    #32 Guest Roman Guests December 20, 2018 15:54
    3
    I collected such an antenna in the village. there, directly to the tower, 9 km in one direction and 11 in the other. connected to the modem with koksial through pigtail, I’ll tell you that all this is nonsense! There is no connection in the village at all, but with this antenna 1-3 sticks of 2g can appear, well, then what ??? anyway, it’s almost impossible to load the page, the browser refuses because of the waiting time.
  15. Anatomy
    #33 Anatomy Guests December 20, 2018 19:54
    4
    But only if my memory serves me, then the wave resistance of the input of modems and wifi routers is 50 Ohms, and the author used the usual television 75 Ohms, the antenna itself does not understand what resistance. With consistency, the problem ...
  16. Stas
    #34 Stas Guests December 23, 2018 09:26
    1
    It's time to replace both the monitor and keyboard ...
  17. Guest Sergey
    #35 Guest Sergey Guests December 24, 2018 06:26
    0
    Pigtail is not a connector. This is a small segment of an optical cable with a connector (FS, LAN, etc.). At least the author does not understand the terminology.
  18. Evgen
    #36 Evgen Guests December 24, 2018 13:50
    3
    When I got it, I found an old (for someone new) aluminum colander in the attic. I attached the modem inside with tape, and connected the colander to the glass and through the USB extension cable 3M to the computer. The signal amplified by 3 divisions. The coverage area in that house was zero.
  19. Guest Sergey
    #37 Guest Sergey Guests December 24, 2018 19:43
    0
    I read and damn I think and why the heck I need it. I went to the boutiques a couple of years ago, I bought an antenna for 1500r with a 10m cable and a box for the modem, and there are still no problems with the Internet. 3ji flies in such a way that I often watch Formula 1 online because of my wife’s busy TV.
  20. Tribune
    #38 Tribune Guests December 24, 2018 10:01 p.m.
    24
    I read the reviews, amused. Also, like all this product I have not tried, but I will explain something for the "electricians"
    1. On the RF “insulator” can be a 1/4-wave length of the conductor.
    2. The use of a cable with a different resistance will worsen the SWR, this is bad, but not fatal.
    3. For an antenna of the “wave channel” type, the midpoint of the vibrators has zero potential and I don’t know how to fix these points with a metal or dielectric.
    4.Disk vibrators are able to receive a wave with any polarization - vertical or horizontal, or both together. The choice is made by the cable connection point. In this case, both polarizations are accepted and they should not interfere with each other.
    5. For the same reason, in the absence of connectors in the modem, “adapters” on the case are placed at 90 degrees to each other.
    6. Any antenna is reversible, i.e. It works on reception and transmission, depending on what is in the cable.
    7. It strikes confidence in the judgments of absolute zeros in the subject, who did not even check the product.
    Good luck
  21. Gladly
    #39 Gladly Guests December 30, 2018 11:07 p.m.
    1
    Insulator is not on the hairpin and the elements ?????????
    what's happening :((
  22. Guest Roman
    #40 Guest Roman Guests January 2, 2019 00:32
    2
    Now I risk the anger of smart people, but: My internet from which I am writing this message just works almost on such an antenna. Less diameter and number of disks, the whole antenna is located in a plastic glass of 0.4 L. From the point where it stands Router signal goes 150 meters in low-rise buildings (cottages). There is no direct line of sight to the antenna. I can’t say how long it will be long-range in a straight line, but I have a signal of 2-3 sticks in other places of the site 1-2, and there is a place where there is not one. A plot of 6 acres. So the principle is really working, because before this the signal from the router did not reach even a third of this distance.
  23. Sokolov.dima.alegovich
    #41 Sokolov.dima.alegovich Guests January 3, 2019 07:02 AM
    0
    it will work like a nail in old kinescope TVs stuck in instead of an antenna, that is, the result will be but not what the author praises
  24. little thing
    #42 little thing Guests January 4, 2019 10:59 p.m.
    0
    for homemade ... we, under the urengue (120km from the city), used a simple directional dmv antenna with a length of approx. 1200mm for talking. the more directors there are, the better the reception ...
  25. Guest Alexander
    #43 Guest Alexander Guests January 5, 2019 10:30 a.m.
    0
    Does the antenna have a range? Something new !
    3G and 4G - what is this parameter? Where is the antenna?
    Any antenna is characterized by a coefficient. gain, radiation pattern, broadband and radiation ratio forward / backward. For the author, this is unknown. Add to this "miracle" cable and the gain will go to "minus".
    Somewhere, someone invented this iron "fool" and the author "PR"!
    P.S. Have you tried to make this antenna from gold? Where will the gain be!
  26. Talyan
    #44 Talyan Guests January 6, 2019 00:15
    0
    I tried to do this. Bullshit! Does not work! I tried from different materials. Do not waste time in vain!
    1. Philipp
      #45 Philipp Guests January 6, 2019 6:03 p.m.
      0
      I made this bullshit, the Harchenko antenna with a reflector, much more efficient.
  27. 5469659
    #46 5469659 Guests January 9, 2019 1:02 p.m.
    1
    The author, and if you attach the antenna from two gaskets from the tank engine to the modem, will it catch?
  28. Philipp
    #47 Philipp Guests January 9, 2019 2:52 p.m.
    5
    Here are the guys calculator, the antenna worked for these sizes, it catches 3g in two directions of 15 and 22 km so the author indicated the wrong sizes. Wi-Fi / 3G / 4G gun, analysis and calculation
  29. Guest VladiMir
    #48 Guest VladiMir Guests January 10, 2019 12:34
    1
    And at what distance from the BS is synchronization disruption due to signal delays?
  30. Guest Roman
    #49 Guest Roman Guests 12 january 2019 14:22
    1
    For Talian and Philipp. Either with the size and something is wrong, or your hands grow there, there are no miracles. With the ability to repeat everything works fine, only in snowfall the range decreases.
  31. Guest Alexander
    #50 Guest Alexander Guests March 27, 2019 9:08 p.m.
    1
    figs knows him. Collected this. I adjusted the sizes at the right frequency according to the online calculator. I thought figsall this. After connecting to a modem that 2G barely sees, a miracle happened. Not even on a cooriented antenna became confident 3G. Thus, raising the antenna 5 meters from the ground, I even caught a 4G base which is located 24 km through the forest.
  32. Guest Alexander
    #51 Guest Alexander Guests March 30, 2019 1:29 p.m.
    1
    You can see the information on this antenna https://3g-aerial.biz/wi-fi-3g-4g-pushka-analiz-i-raschet Just there is also a calculation for the desired frequency. I did this. Customized sizes on the bar. Everything works great
  33. Guest sergey
    #52 Guest sergey Guests April 16, 2019 09:07
    1
    and if I have 1700 and 1900 MHz and plus hspa +. what circuit do I need?
  34. For peace
    #53 For peace Guests May 10, 2019 1:33 p.m.
    0
    In the diagram there are 6 disks, in the photo 7! Someone already in my opinion said where to look taking into account the frequency of broadcasting of the operator.
  35. Guest Vladimir
    #54 Guest Vladimir Guests July 4, 2019 8:33 p.m.
    0
    Not knowing what I needed, I collected a joke for 2600mhz (where the smallest drives are 30mm.) Came out small with a palm.
    I connected two cables to her to the second pancake 90gr. sort of past.
    He climbed onto the roof to the mast, fixed next to 15M Past 4G, threw wires and was surprised by the same signal of 3 divisions, the same speed 40-50 / 12. I disconnected the second wire from the connector, the signal dropped to 1 division, everything is like in Gellan, it goes past it works on this antenna with a palm. It was a tower through a forest 2 km.,
    turned to a 6km tower in direct "visibility" from the roof of the house without obstacles in the way. 3 out of 5 signal is the same as Gellan’s 12/10. Then I found a video on the Internet that is inside this antenna inside the case, but in general there is no nifig there. In this homemade product with a palm more constructive. I'll try to collect a large one.
  36. Alexey
    #55 Alexey Guests July 10, 2019 18:45
    1
    I made an AnthNu for 4G (2100) increasing the reception of the signal at 10dB while catching 4G at a distance of 15km

Read also

Error codes for washing machines