Weak DVB-T Signal After Antenna Relocation: Mesh vs Omni-Directional Antenna (40-50km Range)

As a result of the renovation, I had to change the location of the antenna for terrestrial TV reception (it is a directional antenna). Unfortunately, after this change of location the signal is very weak, the connection breaks off, all channels from the multiplex do not work. Probably not a problem, but the house is located in the lowering of the area, in addition, it is surrounded by other buildings and higher. There is also a building in the direction of the relay mast. The relay station itself is about 40-50 km away. My question is - will it help to change the antenna into a wire mesh that can collect the reflected distracted signal? Maybe it is worth using a omni-directional antenna, which collects signals within 360 degrees according to the description? What are your opinions? I note that I am not an antenna specialist. I am asking for advice, and if I would repeat the topic for a link to the topic with a similar problem or redirect the topic. Thanks in advance.
(transmitter: Trzeciewiec near Bydgoszcz)

Hello. And where do you have this antenna in the attic on the roof?

Quote:

As a result of the renovation, I had to change the location of the antenna for terrestrial TV reception (it is a directional antenna). Unfortunately, after this change of location the signal is very weak

How do I try to give in a similar, similar place?
Did you connect everything correctly?

The building is one-storey with a gable roof. Previously, the mast was founded on the chimney, but due to the renovation of the chimney and the façade, it will not return to this place. Previously (on the mast attached to the chimney) there was a reticular antenna installed, there were no major problems, the signal was collected well, and the mast was about 3 m. Currently, I have an antenna bracket mounted on the top wall as high as I could (about 5 meters from the ground level). The problem with the directional antenna was already very difficult to set up at the beginning and the millimeter shift lost the signal. That's why I think about replacing the antenna with a mesh or omnidirectional - there are not too many information on the internet, I do not know if it is worth it or if it does not have too small vertical polarization.

In difficult terrain, the directional antenna does not really work, it has too small a half power angle and it is difficult to set it precisely. Added to this are the location conditions, corrugations, buildings, etc. It is best that the transmitting and receiving antennas be "seen".
The proverbial net in such conditions could be better checked. It has a wider "viewing angle" relatively without major signal losses. Unfortunately, I do not know the location, so it is difficult to advise something more. Judging by the given distance from Trzeciewca (about 40-50 km) and assuming that the signal will be taken from the reflections, then without the preamplifier it probably will not do.

As stated above, in the antenna amplifier, I use SWA-9001 cer, or give LNA 169, 177 and power supply with regulation.

MG-42 wrote:

(this is a directional antenna). Unfortunately, after this change of location the signal is very weak, the connection often breaks,

You did not provide the most important information. What is this antenna? Enter the manufacturer and model or give a link to it.

Now I have an antenna (ARKAS DVB-T Xenic UHF-141 directional antenna with LTE filter). I think that it is not the fault of the antenna, some of its disadvantages, it is the problem of the troublesome location of the building. So if I found a voltaic antenna with an amplifier and a regulated power supply, would it help? I am not a specialist what is this "preamplifier" I still have at home "DSE amplifier TLA-200A 28dB with regulation" will be good for something?

link If it's this antenna, it's quite a suspect - passive with a profit of 28dBi (with other sellers give a profit of 20dBi), with these dimensions it is rather impossible.
If I understood correctly, then a new antenna was mounted on a holder such as for satellite dishes, which is a good few meters lower than the existing grid, and it makes a big difference.
Think about the assembly of the mast (screwed to the wall) so that the antenna is the minimum at the same height as the old grid or above. In difficult terrain, every meter makes a difference.

This antenna looks like an "improved" plastic version of the antenna Dipol 17 / 21-60 , which according to the manufacturer in the passive version has a profit of up to 14 dBi. About two years ago, I compared her with Dipol 19 / 21-60 and in the same conditions and in the same place I got a signal on it with slightly worse parameters - comparable strength, worse quality.

MG-42 wrote:

That's why I think about replacing the antenna with a mesh or omnidirectional

Do not even think about the omnipresent. Inside you have a piece of wire and a powerful amplifier

I would like to see something like Maximum UHF 200, Vivanco TVA 502A, but without a proper mast height, each antenna will have a problem. There is also the issue of Mux 8 - the second antenna (for the VHF band) and the crossover, or one Combo antenna (Trzeciewiec transmits in the H field), but this depends on the location of the receiving antennas.

And I would set up a grid and check it on a plate with an amplifier or without because sometimes the power supply makes the reception worse, I have already personally convinced myself

eprom wrote:

And I would set up a net and check it on an amplifier board or without because sometimes the power supply deteriorates the reception I have personally convinced myself more than once

Have you come up with it, he was surprised? As the power supply is the reason it is replaced, it repairs and not that the amplifier and without the power supply.

I think I will put a mesh antenna with the SWA-9001 cer amplifier, or give LNA 169, 177 and a regulated power supply. If it does not help, I will be combining with placing the antenna higher ...

It will help, help.
I am not a supporter of "grids" but in difficult conditions quite often works - I catch everything, ... what is the advantage and disadvantage, unfortunately. An undoubted advantage is its price
I had a similar case in Bydgoszcz itself, at the bottom near MM / SATURN, Jagiellońska intersection with Pestalozzi, Ip from the street. The grid managed - only with reflection and with the amplifier. And who would think ... Trzeciewiec at the belt ...

I made a mesh antenna with the SWA-9001 cer amplifier and it's good for now Also thanks for help