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Reception of channels with horizontal polarization works, vertical not

Discussion in 'DISH SETUP: Single sat, Multi-Sat & Motorised' started by tom degetel, Jul 17, 2017 at 10:37 AM.

  1. tom degetel

    tom degetel New Member

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    My Satellite Setup:
    Hellas 39
    My Location:
    Belgium
    Hi,

    I have a new dish pointed corectly toward HELLAS2 (39E) but I can't receive ANY channel sent with vertical polarization. Channels with horizontal polarization works perfectly.
    The signal strength shows 90% for all channels with horizontal polarization but 0 for all those with vertical polarization.
    The LNB is universal and I have also tried to replace it by another one. Its rotation (skew) is correctly set, according to my location (24 degrees clockwise). I have tried to turn it to different positions all around 360 but no luck with reception of channels with vertical polarization.
    Any idea what to do?

    Thanks in advance
     
  2. Channel Hopper

    Channel Hopper Suffering fools just so you don't have to Staff Member

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    What size dish are you using?

    Can you get signals on both polarities from the nearby satellites (42 E ) ?
     
  3. tom degetel

    tom degetel New Member

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    My Satellite Setup:
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    The dish is 90 cm. I haven't tried other satellites; I cannot move the dish because it has been fixed on the neighbour's roof.
     
  4. Mickha

    Mickha Super Moderator Staff Member

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    Either your receiver isn't changing the polarity, or more likely the LNB is faulty.
    Try your receiver on a different dish, and check you can get vertical polarity channels.
    If your receiver is fine check the connections, and cable, then try the LNB on a different set up.
     
  5. Trust1

    Trust1 Specialist Contributor

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    Faulty lnb I dont think because it was changed by another one .
    Maybe wrong lnb setting , should be "universal"
    Or receiver is sending lnb voltage over 14 volt at Vertical mode
     
  6. tom degetel

    tom degetel New Member

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    My Satellite Setup:
    Hellas 39
    My Location:
    Belgium
    LNB was changed, indeed.
    The setting is correct, Universal LNB.
    I checked the voltage, the receiver is sending 12,8V at all time.
    Tried to put a little Sat finder device between the LNB and the receiver, at receiver side. It shows a proper signal at all time. When I switch to horizontal polarity, a led is shortly flashing and then it lights up, indicating the H polarity. When I switch to vertical polarity channels, the led is flashing every 3 seconds.
     
  7. Channel Hopper

    Channel Hopper Suffering fools just so you don't have to Staff Member

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    Which receiver ?

    Can you borrow another ?
     
  8. tom degetel

    tom degetel New Member

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    My Satellite Setup:
    Hellas 39
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    The setting is correct, Universal LNB.
    I checked the voltage, the receiver is sending 12,8V at all time.
     
  9. tom degetel

    tom degetel New Member

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    My Satellite Setup:
    Hellas 39
    My Location:
    Belgium
    I took the receiver to my mom's apartment and mount it on her dish. It works perfectly there.
    I wonder if the length of the cable has anything to do with this. It reaches 150 ft (45m). I've added an amplifier which boosts the signal to 99% on the horizontal channels but doesn't change anything on vertical ones.
     
  10. scopus

    scopus Specialist Contributor

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    My Satellite Setup:
    Channel Master 1.8 Motorised, C/Ku/Ka and a 1.2 Fibo Gregorian Motorised, Ku/Ka all connected to a TM 8000, 5402M3, 5302, Dr HD F15 and Amiko A3, plus a Satfinder5 Spectrum Analyser. Sansui A9 Amp and BOSE Acoustimass speakers for the audio.
    My Location:
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    If the receiver is ending out 13V all the time even in Horizontal mode then it is faulty. It should switch to 18V when a Horizontal channel is selected.
     
    Chris1979 likes this.
  11. a33

    a33 Member

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    Maybe the amplifier is cause of the problem, then? Or was this just a test, and you didn't have it permanently?

    Was the voltage still the same (12,8V) at your mom's appartment?

    BTW: Tom started a parallel-thread here: Reception of channels with horizontal polarization works, vertical not
    So to not do unneccesay work: check there also.

    greetz,
    A33
     
    Last edited: Jul 17, 2017 at 11:08 PM

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