DVB-T Signal Quality Fluctuating: High Strength 95/100%, MUX1-3, WIWA HD-90, MITON 1000 Antenna

I warmly welcome

I am new to the forum, but have been following it for a long time and have found answers many times to problems that I tried to somehow fight, but this time due to the presence of many variable factors I decided to open a new thread. To the point :

I have problems with terrestrial TV reception. This applies to: MUX1, MUX2, MUX3. The signal strength remains constantly at the level of 95/100%, while the quality fluctuates in the range (approx.) 50/90%, which causes pixelation and loss of audio and vision.


Equipment owned:
- WIWA hd-90 MEMO decoder
-Directional antenna MITON 1000 gain 15 dB
-CONOTECH NS100 TRISHELD 75 OHM coaxial cable (divided into two sections: on the balcony 2m + in the apartment 2m)
- window passage

Reception from the Chwaszczyno transmitter (distance 12 km), but there are difficulties in the form of: an apartment on the 1st floor, an 11-story block blocking the direction directly to the transmitter, numerous trees in front of my block, and the general topography. It is for this reason that I decided to use this antenna.


I took these two photos within seconds.

The installation was installed in October 2016 and for several months (until February or so) it worked flawlessly, with time the disturbance increased, but I thought it might be the fault of the decoder that was defective. Yesterday I bought a new set-top box and unfortunately still the same.

The antenna is attached to the railing, I can't mount it otherwise because I have a balcony only on this side. At most, I can try to direct it towards Chwaszczyno, but a large block close to mine will rather drown out the entire signal.

What can I do in this situation? When I come back from work, I will try to get the ends of the wire outside and possibly try to adjust the antenna, but yesterday evening it did not bring any improvement. I also disassembled the box with the impedance plate and sprayed some WD40 on the contacts, but it was for nothing.

I noticed that the (passive) antenna was electrocuting. In the decoder, the power is turned off, there is no amplifier. Why is this happening?

I am asking for advice what I can do.

Below are pictures of the installation:

Vened wrote:

I warmly welcome
...
-cable ... (divided into two sections: on the balcony 2m + in the apartment 2m)
- window passage
...

I would be looking for a problem here. Connect the cable lengths without a window transition with an F female / female connector with an open window. Analogue window transitions worked well, while in DVB-t it was different.

In my opinion, the problem with the location. Trees grew, conditions changed. Roof antenna.

andpol 33 wrote:

In my opinion, the problem with the location. Trees grew, conditions changed. Roof antenna.

Of course, this would improve the signal strength and quality for sure.

Removing the window transition did nothing. I connected a different cable for a short time, a new one nowhere and it is the same. Unfortunately, I can not throw the antenna on the roof ...

Added after 1 [hours] 38 [minutes]:

welcome back

I probably solved the problem. I lost the cables again and set the antenna in a different direction. I almost certainly managed to catch some rebounds and although the quality is in the 100/60 range, so far the reception is very good.

Until I was surprised myself