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[Solved] DVB-T Troubleshooting: Missing Channels, No TVP, New Antenna Setup - How to Improve Reception?

anszej 40416 29
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  • #1 18866789
    anszej
    Level 7  
    I only find 16 terrestrial TV channels, no TVP, I have a new antenna, cable, PCB. Antenna quite high in a place where it was always ok and directed towards the transmitter with which it was always ok. I receive these 16 channels in good quality. My question is what is going on here? why some channels are of good quality and others are not at all? What to do?
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  • #2 18866834
    kaz69
    Level 36  
    Or maybe a tree has grown and it covers the transmitter?
  • Helpful post
    #3 18866848
    DiZMar
    Level 43  
    anszej wrote:
    ... why some channels are of good quality and others are not at all? ...

    This is normal for digitally broadcast signals. There is a pickup or it's not there. There is no degraded reception (snowfall or blurring) of some programs. Only "caging" is possible. Deterioration of reception (snowing) occurred with analogue broadcasting.
  • Helpful post
    #4 18866860
    gumisie
    Level 43  
    anszej wrote:
    Antenna quite high in the place where it was always ok and directed towards the transmitter
    In which town do you live, where is the transmitter (town) located.
  • #5 18866870
    LeDy
    Level 43  
    All data - what, what, where, distances.
  • Helpful post
    #6 18866925
    gumisie
    Level 43  
    @ansza Use this page: Link
  • #7 18866949
    anszej
    Level 7  
    The village of Jaworznia, the Kielce-Święty Krzyż transmitter
  • Helpful post
    #8 18866967
    andpol 33
    Level 38  
    Badly assembled antenna, badly connected cable.
  • #9 18866978
    anszej
    Level 7  
    And it's not that it would not be at all if it was badly connected?
  • Helpful post
    #10 18866989
    DiZMar
    Level 43  
    anszej wrote:
    And it's not that it would not be at all if it was badly connected?

    Different MUXs are broadcast with different power. Some MUXs (channel packets) are not correctly receiving correctly and some MUXs (channel packets) are not receiving correctly.
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  • #11 18867002
    LeDy
    Level 43  
    It is not yet known what you are receiving.
  • #12 18867043
    clubber84
    Level 37  
    And the Holy Cross now has no maintenance and the MUXes fly with reduced power or from the reserve?
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  • Helpful post
    #14 18867049
    clubber84
    Level 37  
    anszej wrote:
    Mesh antenna

    And what kind of "plate" do you have in the antenna box?
    Because this board may need a power supply with a separator.
  • #16 18867059
    anszej
    Level 7  
    Everything previously worked without a separator unless something changed
  • Helpful post
    #17 18867072
    Wojtek M
    Level 39  
    Check if the "wires" in the antenna box are screwed to the plate, not under the plate, "metal to metal". Screwing under the plate is a bad connection.
  • Helpful post
    #18 18867076
    andpol 33
    Level 38  
    I understand that you have set up an amplifier and you do not have a power supply and you are surprised that it does not work.
  • #19 18867091
    anszej
    Level 7  
    I am surprised that it does not work and it worked and what the amplifier looks like, I do not even know
  • #20 18867096
    gumisie
    Level 43  
    Wojtek M wrote:
    Check if the "wires" in the antenna box are screwed to the plate, not under the plate, "metal to metal". Screwing under the plate is a bad connection.
    A common case, most home-grown "fitters" do not pay attention to this, and then I answer the phone and hear: "new cable," PCB "and also new power supply. Could you come and see why it does not work". :wink:
  • Helpful post
    #22 18867101
    DiZMar
    Level 43  
    anszej wrote:
    ... what the amplifier looks like, I don't even know

    Yes
    DVB-T Troubleshooting: Missing Channels, No TVP, New Antenna Setup - How to Improve Reception?
    You showed it yourself.
    If the above amplifier is in a box, it requires a 12 V power supply with separation from the TV antenna socket. If there is no power supply, it is surprising that you are receiving anything. So you have a very strong signal and in the box, instead of the above amplifier, there should be a balun, which is something like this:
    DVB-T Troubleshooting: Missing Channels, No TVP, New Antenna Setup - How to Improve Reception?
    Then without power and separation.
  • #23 18867130
    kaz69
    Level 36  
    If it's the amplifier from the photo, you can see water marks and it may not work. And as the name says it is an amplifier, which means that it requires a power supply.
  • Helpful post
    #24 18867147
    LeDy
    Level 43  
    The amplifier and power supply should also be replaced. Buy power supply with regulation.
    However, I would start with the power supply.
  • #26 18868971
    anszej
    Level 7  
    Thank you all it works
  • Helpful post
    #27 18869013
    gumisie
    Level 43  
    anszej wrote:
    Thank you all it works
    Explain what you did (I think we deserve it), mark the posts as helpful (those you think are such) and close the topic.

    Regards.
  • Helpful post
    #28 18869018
    andpol 33
    Level 38  
    Has he put the power supply on? Or a balun ...
  • #29 18869021
    anszej
    Level 7  
    Replacing the plate with a balun helped.
  • #30 18869028
    anszej
    Level 7  
    Replacing the plate with a balun helped.

    Added after 2 [minutes]:

    The balun solved the problem again, thank you all
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Topic summary

The discussion revolves around troubleshooting DVB-T reception issues, specifically the inability to receive certain channels despite having a new antenna setup. The user reports receiving 16 channels in good quality but is missing TVP. Responses suggest potential causes such as obstructions (e.g., trees), poor antenna assembly, and varying power levels of different MUXs. The user is advised to check connections, ensure proper power supply for the amplifier, and consider replacing components like the PCB with a balun. Ultimately, the user resolves the issue by replacing the plate with a balun, which restored channel reception.
Summary generated by the language model.
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