Today we are divided by Lifehaki, how to make a TV antenna with your own hands. The antenna is a device for radiation or to receive radio waves. There are transmitting, reception and transceivers. The editors learned that it is necessary to make a copper and brass wire, copper tubes, wires and even from tin.

TV antenna from tin cans

The antenna for the TV can be made from the well-made materials, even from empty beer tin cans. This method is the fastest and simple. You can make a design from electrodes and disks. The maximum number of channels will be seven.

It will take:

  1. can;
  2. plug;
  3. antenna cable;
  4. screwdriver;
  5. sticky tape or insulating;
  6. wooden trempel;
  7. self-tapping screws (2 pcs).


The room design ensures confident reception of an analog signal within the city and without negotiation for the cable (with a length of up to 2 m).


Distance between banks:

where λ is the wavelength. Dipoles should be no more than 3-4 pieces. If there is less, the gain will be insignificant, more - there will be problems with the coordination of the cable.

The signal quality will noticeably improve, if you place the screen from the metal grid from the back.

The distance between the screen and the main design:

How to make a design:

How to improve the antenna?

The amplifier is necessary if the translator is far away. With an amplifier, the design takes the signal more reliable, but the option "Make yourself" can not play here.

You can use a magnet to be filled with several television cable turns (going near the TV, and on the antenna).

If there is a question how to strengthen the home design signal so that instead of 7, 20 channels were clearly broadcast, it is necessary:

  • buy a special tv signal preamplifier;
  • find the place of perfect signal reception;
  • get rid of interference that create metal objects.

How to make a quick antenna:

How to assemble an antenna for digital TV?

Homemade design should be:

  1. neatly made with a high degree of accuracy without loss of electroscent signal;
  2. strictly directed along the axis of the electromagnetic wave emanating from the transmitting center;
  3. aims to type polarization;
  4. to protect against side signals of the same frequency emanating from any sources: electric motors, radio transmitters, generators.

How to make an independent antenna for digital TV (DVB T2):

Simple digital TV antenna: What are the options?

For it, some coaxial cable with a wave resistance of 75 ohms and a plug for connecting the structure will be required.

The algorithm is:

  1. an external shell is cut off with a conventional knife;
  2. take the length with a small margin, because a small segment when adjusting is easier to bite off than running for a new cable;
  3. from this section of the cable, the shielding layer is removed, the inner core is broken down and isolation is removed;
  4. insert into the connector on the console of a TV signal of the plug socket, wire bare inner veins, we guide the incoming electromagnetic wave across the incoming electromagnetic wave;
  5. remember horizontal polarization;
  6. the essential digital antenna must be fixed on the windowsill or a piece of tape on the glass;
  7. interference and reflected signals are shielded by a foil strip located from the central vein on a low distance;

Varieties of antennas and which of them can be done yourself?

There are "Polish", "Eight" and "Square". Digital antennas for TV tuner and TV consoles must be configured to one frequency.

IMPORTANT! Both the prefix and the tuner must be able to decode the signal.

Polish Antenna and Digital TV

It provides high-quality and reliable reception of analog television (+ dmv), but completely unsuitable for receiving modern digital TV.


"Eight": making algorithm

A simple design for DVB T2, which can be made from copper wire Ø 3 mm. The reflector is not used. The top side of the segments is 14 cm, sideways - 13 cm.

Measure the wire with a length of 112 cm and begin to bend:

  1. The 1st segment bending a length of 14 cm (for an antenna - 13 cm and 1 cm - for the strength of the loop);
  2. 2nd and 3rd, like 6 and 7 - 14 cm;
  3. 4th and 5th - 13 cm;
  4. 8th - 14 cm - 13 cm and 1 cm - with a strength loop.

Clean the loops, twist and solder - they will become contacts for connecting the cable. For soldering, the cable from the antenna side is cleaned by 2 cm and 1 cm - from the side of the plug, the connections are sealed with any elastic thermoclaim.

What is "square" and whether it is necessary for himself?

Modification of the "Three Square" design with 6 elements and a transformer, confidently takes digital and analog channels at a distance of up to 10 km of direct visibility.

  • Double square

Over the main frame - the reflector, the side of the main frame - 0.254λ, the side of the reflector - 0.278λ, the distance between the frames is 0.089λ.



Another option double square is two rings.



Antenna Butterfly.

Shortwave small-sized antenna, a form looks like a butterfly. For its manufacture, a copper wire Ø is about 2 mm, 4 mm is allowed for external use, for a home television regular coaxial cable 75 ohms.

Rectangular wire frame (length and width):

  1. for TV - 500х200 mm;
  2. for Wi-Fi (omnidirectional) and Bluetooth - 90x30 mm.

We twist the frame with the crossroads and cutters cut so that two triangles are formed. We solder a coaxial cable and fix with the help of brackets (scotch) on an ebony, wood or plastic dielectric.

Powerful television antenna: What should I know about it?

In order for the device to function, as an ordinary antenna, it is necessary to improve its receiving circuit.

Algorithm:

  1. we buy equipment to enhance the signal;
  2. connect to the device to eliminate interference in the signal;
  3. we take a cable with an insulating tape from two ends;
  4. we make a screen for high-quality reception: a kind of metal mesh, which is isolated from the TV and fix the back of the receiver;
  5. an ordinary metal mesh from the usual fence will come to the screen;
  6. we add iron rods and connect them symmetrically with the screen to enhance the signal (it is necessary that the whole design is from one type of metal to avoid oxidation) $
  7. in the center of the installation, we place another amplifier and ship contacts to the receiver.

IMPORTANT! Such a television design is installed on the roof with a benchmark on the nearest television tower.

Universal design

Required tools and materials:

  • copper wire (length 4 m, cross section 4 mm2);
  • board of any thickness, but 7 cm wide, 55 cm long;
  • soldering iron;
  • self-tapping screw;
  • roulette or ruler;
  • screwdriver;
  • simple pencil.

Algorithm:

  1. copper wire cut on 8 parts, the length of each - 37.5 cm;
  2. remove the insulating layer in the middle part of each of the obtained parts of the wire;
  3. cut off another 2 copper wires (22 cm) and divide them conditionally into 3 equal parts;
  4. at the inflection points, remove the insulating layer;
  5. wire bend in prepared (bare) places;
  6. the distance between the ends of the flexible rope of the wire is 7.5 cm;
  7. secure the plug, attach the television cable.

As an antenna for digital TV (DVB T2) make yourself:

Logooriodic (Vesvolovaya) Design

This gathering line with the alternates of dipoles installed on it. The length of the piece of wire, forming the semi-tripol, will be equal to λ / 4.

IMPORTANT! Street structures made with their own hands can enhance up to 25 dB, about 12 dB rooms.


LPa is the perfect device for receiving both analog signals and digital. To calculate the parameters, it is necessary to know the value of the progression indicator (from 0.7 to 0.9) and the angle of the opening α (30-60 °). We take the basis of the proportion and calculate the necessary parameters:

τ \u003d b2 / b1 \u003d b3 / b2 \u003d bn / (b (n-1)) \u003d A2 / A1 \u003d A3 / A2 \u003d AN / (A (N-1))

The gain is the better than the greater τ. An increase in the angle α may increase.

Calculation of parameters:

  1. determine the values \u200b\u200bof B2 and A2;
  2. calculate B1 and A1 and other parameters.

What are the types of antennas? Home simple homemade antenna

Home design is mounted from copper or brass wire. Aluminum is not suitable because it is quickly oxidized.

The wire is cleaned from two ends of the insulating material, one end is attached to a pipe or battery opposite - inserted into the television connector. The amplifier of the necessary frequencies is the pipe, which passes through the whole house and goes upstairs. Signal immediately occurs, the antenna catches 5 channels.

  • For apartments with a balcony

Wire takes authentic, as the TV and the balcony zone will need to be connected. The wire on both sides is cleaned, one end is connected to the TV to the cable socket, and the second is stretched to the balcony and attached to ropes or strings. Such antenna gives more abruptly image, and channels with it more.

Antenna for dacha

Stable reception of the signal at a distance of 30 km set passive structures and winter, and in summer. For long distances, the design needs more powerful, better with an amplifier. For hilly terrain and ultra-duty reception, the antenna must be raised higher by applying a mast to this.

For classic design for giving, you will need:

  1. wire (Ø 1.5 mm) - at the rate of 1.5-2 m per antenna and 5-6 m to the distance from the design to the TV;
    2. The outer part of the prepared wire (spin 1-1.5 m in the ring, Ø from 356 mm to 450 mm);
  2. the inside of the antenna (from the wire to make the second ring, dimensions - 180 mm;
  3. ready rings - the basis of the future antenna - fasten on a piece of plywood (you can and wood), but that the tree does not overlap the rings and did not hang out;
  4. ready design orient rings in the direction of the signal source, rotate the antenna to search for a better signal.

Antenna Kharchenko (bikvadrat)

This is an outdoor zigzag design with a reflector.


The z-antenna system with the reflector provides the same parameters as
LP-antenna. The difference is the main petal - it is twice the horizontally longer, which allows you to catch a signal from all directions.


The DMW antenna is made of copper tube and aluminum sheet with a thickness of 6 mm.

Automotive antenna: internal and external

  • Internal

It will take a framework device that is paved from behind under the glass seal. In the upper part, she has alimony, but no dimensions are required at a frequency of 27 MHz. For this reason, the capacitor is installed in the center with which the tv antenna is configured for the car in the resonance on the required channel.

IMPORTANT! The receiving frequencies are somewhat - 27 and 65 MHz, 28.2 and 68 MHz.


Production Algorithm:

  1. we take the MGTF 0.5 wire, which is paved along the edges of the rear window in the form of a trapezium;
  2. the same is done with the upper part;
  3. poles have it so that it is easy to add wires for a matching condenser;
  4. to remove the signal, use the RK-50 cable;
  5. in the center of the rear window, 5-25 PF are fixed, to which both cables are strictly directed.

Universal compact TV antenna in the car:

  • Exterior

For a good signal, you need to secure a pair of telescopic antennas from the radio. Case can be taken from the Polish device.


Figure 11 - Polish Construction - Basis for Internal Auto Independents

Power supply to the amplifier:

  1. we take the connector for the active TV antenna and solder the wire to it;
  2. cable from TV antenna skip so as not to overcertrine;
  3. it is screwed to the connector;
  4. the wire soldered to the connector connects to the output of +12 on the radio tape recorder to turn on the amplifier or the active antenna.

There are active intra-alone combined TV antennas with external elements for receiving MB / DMV.

In addition to the above, there are meter (crossed aluminum tubes) and fractal antennas.

Fractal Wi-Fi antenna with their own hands:

IMPORTANT! All stories about the effective work of mercury antenna is a great misconception. Science is unknown by no principle for which the mercury antenna could work. Editors warn, independent manufacture of mercury antenna - so-so the idea and dangerous undertaking.

What is a multiplex digital TV?

Digital multiplex is a set of single frequency channels. There are two multiplexes: the first is available in all cities with digital TV, but not all towers are ready for the second. For installation, you will need a receiver and antenna with support for DVB T2.