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Clermont Carn - Transmitter Work?

  • 06-09-2018 9:10am
    #1
    Digifriendly
    Registered Users, Registered Users 2 Posts: 4,073 ✭✭✭


    Noticed that my mux 2 (CH. 56) from Clermont Carn now requires masthead amp. to be switched on for channels to come through. After DSO in 2012 I have been able to receive all DTT channels clearly without masthead amp (which is a residue of analogue days when it was required for decent reception). Notice that without masthead amp power the signal strength now is still very high but quality is almost 0%. Mux 1 (Ch 52) still works fine without masthead amp. power. Has there been recent work carried out on CC transmitter?


Comments

  • #2
    The Cush
    Registered Users, Registered Users 2 Posts: 15,848 ✭✭✭✭The Cush


    They were working on it last week, it was off-air for a time IIRC.

    I wonder if they are restricting Ch.56 towards NI/GB for the transition of interim muxes 7/8 to 55/56?

    Post 700 MHz clearance frequencies from CC are unrestricted towards NI.


  • #3
    Digifriendly
    Registered Users, Registered Users 2 Posts: 4,073 ✭✭✭Digifriendly


    The Cush wrote: »
    They were working on it last week, it was off-air for a time IIRC.

    I wonder if they are restricting Ch.56 towards NI/GB for the transition of interim muxes 7/8 to 55/56?

    Post 700 MHz clearance frequencies from CC are unrestricted towards NI.

    Thanks for this. Glad to know unrestricted power up here in the north post clearance.


  • #4
    TAFKAlawhec
    Registered Users, Registered Users 2 Posts: 618 ✭✭✭TAFKAlawhec


    Transmission sites in central Scotland underwent frequency changes earlier this week as part of the 700 MHz clearance plan in the UK. Both Black Hill and Darvel were affected with their COM7 & COM8 multiplexes moved to E55 & E56 at both sites.


    The effect of E56 reception directed at Clermont Carn now having a much lower signal quality level while maintaining a similar signal strength as before suggests that there is something interfering with reception of the 2RN mux. Putting two and two together it might be no coincidence that COM8 from Black Hill or Darvel (more likely the latter) is causing destructive interference to reception.


    I'd also doubt that transmissions at Clermont Carn on E56 have switched to a different aerial from that used for E52 - is the old directional pre-ASO DTT aerial even still available there?


    Maybe there are "enhanced" conditions currently causing such destructive interference to reception. Reception quality over the next few days & weeks should give a clear sign wherever such interference may have to be put up with until this time next year.


  • #5
    Digifriendly
    Registered Users, Registered Users 2 Posts: 4,073 ✭✭✭Digifriendly


    TAFKAlawhec wrote: »
    Transmission sites in central Scotland underwent frequency changes earlier this week as part of the 700 MHz clearance plan in the UK. Both Black Hill and Darvel were affected with their COM7 & COM8 multiplexes moved to E55 & E56 at both sites.


    The effect of E56 reception directed at Clermont Carn now having a much lower signal quality level while maintaining a similar signal strength as before suggests that there is something interfering with reception of the 2RN mux. Putting two and two together it might be no coincidence that COM8 from Black Hill or Darvel (more likely the latter) is causing destructive interference to reception.


    I'd also doubt that transmissions at Clermont Carn on E56 have switched to a different aerial from that used for E52 - is the old directional pre-ASO DTT aerial even still available there?


    Maybe there are "enhanced" conditions currently causing such destructive interference to reception. Reception quality over the next few days & weeks should give a clear sign wherever such interference may have to be put up with until this time next year.

    Thanks for this. I've noticed a slight reduction in signal quality for Ch52 but nowhere near the quality reduction for Ch 56.


  • #6
    Mickey Mike
    Registered Users, Registered Users 2 Posts: 798 ✭✭✭Mickey Mike


    As far as I know this transmitter is changing frequently and moving down the UHF band. Let's hope they will be no power restrictions going into Northern Ireland, one day we'll have a United Ireland.


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  • #7
    Thurston?
    Closed Accounts Posts: 2,278 ✭✭✭Thurston?


    Mickey Mike wrote: »
    As far as I know this transmitter is changing frequently and moving down the UHF band ...

    Changing frequency, you mean? And of course it's moving down the UHF band, since it's currently using freqs. that will be sold off.


  • #8
    Digifriendly
    Registered Users, Registered Users 2 Posts: 4,073 ✭✭✭Digifriendly


    Mickey Mike wrote: »
    As far as I know this transmitter is changing frequently and moving down the UHF band. Let's hope they will be no power restrictions going into Northern Ireland, one day we'll have a United Ireland.

    I hope a United ireland won't mean end of UK channels here in NI as we get the best of both worlds with Freeview as well as Saorview and on Sky we get all UK channels on Epg as well as 4 channels from ROI including Eir Sports 1 HD.


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