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Intermittent HD channel reception (1 and 2)

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HDTV Posted messages 5 Status Member -  
Andy31200 Posted messages 26918 Registration date   Status Moderator Last intervention   -
Hello
I receive all TNT channels in SD and HD. All SD channels are clear
The HD channels TF1 and France 2 are often very pixelated,
Arte HD is always perfect
Equipment
Amplified antenna, Samsung HDTV 1080p
I live 77 km from the transmitter
Thank you for the information

5 answers

  1. Gil
     
    weak reception with TNT antenna + preamplifier, = signal scrambled, interfered, several possible causes... see the diagnostic help from Satmag:
    http://forum.satmag.net/showthread.php?t=14912
    2
    1. HDTV Posted messages 5 Status Member 1
       
      Thank you for the response!
      In fact, I am very far from the transmitter, 77 km away, so I am equipped with a Métronic amplified tripod antenna.
      My question is the following: why are some HD channels pixelated or even frozen—both sound and image—like TF1, F2, M6, while others (never!) like Arte HD are not? It is also true that I have a new 10m cable run.
      Where can I find the different frequencies broadcasted by my transmitter LOMONT in the Lure region (70)?
      Are the HD transmission frequencies of TF1 and F2 far from those of Arte HD?
      I am considering replacing my Métronic amplified tripod antenna with a more efficient one... which one???
      I am in an area where there are old plane trees between my house and the transmitter, which do not favor reception.
      Thank you.
      0
      1. Gil > HDTV Posted messages 5 Status Member
         
        What more can be said... it is mentioned in the assistance that vegetation can create an obstacle to TNT waves and that emissions in 4G-LTE, notably, but not only, since there are other interfering signals, such as Wi-Fi, that can create interference with TV... (see Emi, Rfi)

        Is the antenna well installed and directed and in the correct polarization H?

        Is the amplifier, channels 21/60? (and especially not 21/69) well filtered against 4G? And is it not saturating the TV tuner with too strong an amplification gain? ...

        If it does not comply with these constraints, a UHF preamplifier 21/60, LTE, adjustable or tunable, 15/35 dB, is recommended ...

        http://img95.xooimage.com/files/8/2/2/preampli-antenne-...i-4g-lte-4395b6e.jpg

        (Lure and its region are served by the F transmitter of Lomont and by spillover from Chasseral, Jura, if Swiss TV, but in V polar)
        0