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Freeview from Brougher Mtn - UTV Mux

  • 28-01-2012 9:53pm
    #1
    LostInLM
    Registered Users, Registered Users 2 Posts: 105 ✭✭


    Hi,

    My parents receive freeview channels from Brougher Mtn transmitter in the north.

    UTV, C4 and other ITV stations have very low signal quality and suffer from a lot of picture break up. It was always weaker than BBC digital channels but they appear to have deteriorated in the last few weeks. BBC's are all still fine.

    I recall reading somewhere that the UTV mux is running at lower power than BBC ones? Is this still the case and when is it planned to bring it up to full power?

    Am I on the right track, or should I start looking for interference closer to home?


Comments

  • #2
    Peter Rhea
    Banned (with Prison Access) Posts: 4,285 ✭✭✭Peter Rhea


    As far as I'm aware, all the Brougher muxes are on the same power - 500 Watts, so even full power is nothing to write home about. The PSB muxes will get a hefty boost when analogue is switched off, the com. muxes less so.


  • #3
    egal
    Registered Users, Registered Users 2 Posts: 377 ✭✭egal


    My ITV channels breaking up today. Noticed analogue Channel 4 weak too. Thought my RTE booster had gone wonky and interfering because when I switch it off signals improve - no RTE then of course. However, if you are experiencing the same problem maybe booster not entirely to blame.


  • #4
    lawhec
    Closed Accounts Posts: 1,757 ✭✭✭lawhec


    Mux 2 and Mux A from Brougher Mountain both currently broadcast using the 64QAM transmission mode as opposed to 16QAM for the remaining four. The former gives more capacity while the latter gives a more rugged signal that can be received in some places where a 64QAM multiplex cannot. If you are on the fringe of the service area the 64QAM multiplexes are likely to go first as the signal to noise ratio drops.

    I've noticed over the years that Muxs 2 & A from Brougher, because they are also at the fringes of the UHF A aerial group which doesn't help, do tend to be that little bit more iffy to receive in fringe areas, whereas the other multiplexes are much more steady and less vulnerable to signal variations because of the weather. Something like that could be happening in your case.

    Come 24th October, the BBC Mux, D3/4 Mux and the HD mux will all be on much higher powers (20kW) and coverage should be more or less the same, the SDN and Arqiva multiplexes will get a modest power boost to 2kW but due to a roll-out change to the commercial multiplexes will have an FEC of 3/4 rather than 2/3 for the BBC and D3/4 Mux, meaning slightly less coverage than planned. However I would estimate that unless co-channel reception from Divis becomes a local problem anyone currently receiving Muxs C & D (Challenge, Sky News, Film 4, 4 Music, Dave etc.) now should still get it after 24/10/12.


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