Very simple homemade DVB-T2 antenna with amplifier
If there is no DVB-T2 television signal of sufficient strength, it becomes necessary to use an antenna with an amplifier. Such equipment can be easily assembled with your own hands from purchased parts, the cost of purchasing which will be about 1 dollar. The universal amplifier SWA-99999 used in this design was used for analogue television broadcasting, so it is quite possible to remove it from an old antenna.
Materials:
- copper wire 3 mm – 112 cm.
- antenna amplifier type SWA-99999 or other - http://alii.pub/656e84
- coaxial TV cable;
- a piece of tying wire or nylon tie;
- a couple of screws, clamps and washers.
Antenna assembly
From a single piece of copper wire 112 cm long, 2 connected squares with sides of 14 cm are bent. The result should be an antenna frame as in the photo. The ends of the wire need to be soldered. The distance between the aligned corners of the squares is equal to the gap between the mounting holes on the amplifiers.
A coaxial cable is clamped into the amplifier board. Make sure that the cable braid does not touch the central core and its clamping screw.
The amplifier is installed on the wire frame of the antenna using clamps, screws and nuts. For reliability, the cable is screwed to the frame with binding wire. If the antenna will be placed outdoors, then care must be taken to seal the board. It can be wrapped in a bag and insulated with tape or hidden in a suitable box, as is done on conventional grid antennas for analog TV.
A plug is installed on the second end of the cable and the antenna is connected to the DVB-T2 set-top box connected to the TV. It allows you to supply power to the amplifier. To do this, in the settings menu of the set-top box you need to select the “antenna power” item.
If the TV supports DVB-T2 and the set-top box is not used, then the amplifier needs to be additionally powered. To do this, a special power supply with a separator plug is purchased or removed from the old analog antenna. The cable is connected to this plug in the same way as before the amplifier. After this, the unit is plugged into the outlet.
In fact, such an antenna is capable of picking up a signal of sufficient strength even while indoors. It does not need to be taken outside, with some exceptions when it is very far from TV towers or there are high buildings that shield radio waves. This is a fully working device, the assembly of which does not require any special skills or knowledge.
Of course, on Ali Express you can buy a ready-made antenna for a couple of bucks (http://ali.pub/3i1kfz), but this is for those who don’t want to bother.
But if you still want to assemble a good antenna that is not inferior to purchased analogues and is absolutely free, then read this article - https://home.washerhouse.com/en/3978-antenna-iz-kabelya-dlya-cifrovogo-tv-za-5-minut.html. And pay attention to the dozens of enthusiastic comments about her work.
