Antenna for digital television.
The simple design of the broadband antenna (frequency range 474 - 858 MHz), light weight, the ability to install both in the private sector and in an apartment building, allows signal reception at a fairly large distance from the transmitter.
The formula for calculating the diameter of the ring d = 0, 375 λ,
where λ is the wavelength in meters.
λ = 300 / f,
where f is the frequency in MHz (you can take the average).
Here the frequencies at which DVB-T2 multiplexes are broadcasting in your locality, you just need to click on its name www.satx.ru/mapF.php
Materials:
copper wire with a diameter of 2 - 3 mm;
plastic strip (ruler) 4 - 5 cm wide and 30 - 40 cm long;
M4 bolt - 2 pcs.;
M4 nut - 2 pcs.
a washer with an inner diameter of 4 mm - 4 pcs.
LSA amplifier - 777DF (if necessary), 5 volt power supply via cable from set-top box or from a USB TV - 1 pc.
television cable RG-6 (75 Ohm) of the desired length with lugs and plug.
Production time with installation - no more than 2 hours.
During the antenna test, the image on the TV screen was stable and without running stripes. Interference was received by the cell phone camera from the working TV.
Therefore, on the test recording, these interference overlapped with the picture.
During the test of the antenna, the image on the TV screen was stable and without running lanes. Interference received cell phone camera from the generators of lower case and personnel development of the TV itself.
Therefore, on the test records, this interference was superimposed on the picture.
The simple design of a broadband antenna (frequency range 474 - 858 MHz), light weight, the ability to install, both in the private sector and in an apartment building, allows you to confidently receive the signal at a fairly large distance from the transmitter . In this case, in a straight line, 42 km is from the Bykovo RTPS (Vladimir Oblast, Sudogodsky District) to Gusevsky Settlement (Vladimir Oblast, Gus-Khrustalny District).
The formula for calculating the exact diameter of the ring d = 0, 375 λ,
where λ is the wavelength in meters.
λ = 300 / f,
where f is the frequency in MHz.
Materials:
copper wire with a diameter of 2 - 3 mm;
plastic strip (ruler) 4-5 cm wide and 30-40 cm long;
M4 bolt - 2 pcs.;
M4 nut - 2 pcs.
washer with inner diameter 4 mm - 4 pcs.
LSA amplifier - 777DF (if necessary) - 1 pc.
TV cable RG-6 (75 Ohm) with tips and the plug of the necessary length.
Production time with installation - no more than 2 hours.
#antenna #TV #digitalTV
30 ноя 2018
