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Sky+HD box: No satellite signal on transponders 11.876H and 11.895V?

  • 01-12-2012 12:29pm
    #1
    Mr Cumulonimbus
    Closed Accounts Posts: 1,463 ✭✭✭


    I'm getting a "no satellite signal received" message on all the channels associated with these frequencies. Tried a second box, same result. Are these transponders down I wonder?

    Channels lost on 11.876H include Quest on sky 154, Discovery on 520.

    Channels lost on 11.895V include MTV on 126, MTV+1 on 160.

    Satellite dish serves a block of apartments.


Comments

  • #2
    Mr Cumulonimbus
    Closed Accounts Posts: 1,463 ✭✭✭Mr Cumulonimbus


    Was checking this further.

    On MTV on ch 126 there's no signal on input 1 but there is a signal on input 2. I was able to record off this channel and view the recording. But I cant watch the channel live. Getting no satellite signal received message.

    Switching to single feed mode there is the no signal received message again via input 1. On other transponders, bar 11.876H and 11.895V, i'm getting a signal on inputs 1 and 2. Ideas?


  • #3
    zg3409
    Registered Users, Registered Users 2 Posts: 7,037 ✭✭✭zg3409


    Do you have access to a spectrum analyser or any equipment to measure the strength of the transponders?

    Could you try a more sensitive non-Sky box to see if the signal is just weak?

    If it is just weak then it could be alignment of the dish etc.

    Sometimes local interference (a nearby phone mast on another roof etc) can cause interference to one or two transponders and not others. 11.890 - 10.75 = 1.14Ghz so if you had an analyser you could check for local interference around 1.1Ghz

    If you don't have the right equipment it might be worth contacting someone who does.

    Ask also did it happen overnight or gradually get weaker?


  • #4
    Mr Cumulonimbus
    Closed Accounts Posts: 1,463 ✭✭✭Mr Cumulonimbus


    Apologies for the late response zg. Just noticed them gone one evening. Wouldn't watch the channels in question very much.

    I'm in an apartment fed by a communal sat/uhf system. Two feeds come in. Diplexed sat/uhf wallplate in sitting room giving sat and terrestrial there with second feed to the bedroom. Both feeds come to the sitting room socket first.

    Originally both feeds went to the Sky+ box in the sitting room to give full recording ability, but I've cancelled Sky, so I had put the box back on single feed mode, thereby allowing reception to the bedroom again via the second feed.

    I have a Humax HDR Fox T2 supplying Saorview/Freeview along with with the Sky+HD box. I noticed when I plugged out the Humax at the wallplate the affected transponders were ok!

    Suspecting a dodgy wallplate, I changed it, but the same result occurred. Also I was getting breakup of DTT on the Humax when the Sky box was on. Some type of sat/uhf interference on one of the feeds coming into the flat maybe, or is it interference between the Sky and Humax boxes?

    Currently I'm using one feed to supply the Sky box and the second one to supply the Humax.

    Obviously this is just a workaround to the problem as in doing this there is no longer reception in the bedroom. To get around that, I'm using the RF outlet from the Sky+ box to supply reception using the apartment's cabling.


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