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21-10-2011, 02:43   #1
The Cush
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Saorview Multiplex Information

Below is the list of frequencies allocated by ComReg for DTT (04Oct2011) - http://www.comreg.ie/radio_spectrum/....542.1071.html.
ComReg issued two DTT multiplex licences to RTÉ, one in December 2007 the other in May 2011 - http://www.comreg.ie/radio_spectrum/...g.542.517.html.

Main Sites

Transmission Station Name
Multiplex
UHF Channel No.
Frequency (MHz)
Polarisation
Maximum E.R.P. (Watts)
CAIRN HILL LongfordPSB 0147 682 H158,489.31
  PSB 02 44 658 H158,489.00
      
CLERMONT CARN LouthPSB 0153 730 V50,118.72
  PSB 02 57 762 V158,489.00
      
DUNGARVAN WaterfordPSB 0155 746 H10,000.00
  PSB 02 59 778 H10,000.00
      
HOLYWELL HILL DonegalPSB 0130 546 H19,952.62
  PSB 02 25 506 H19,952.62
      
KIPPURE Wicklow PSB 01 54 738 H63,095.73
  PSB 02 58 770 H63,095.73
      
MAGHERA Clare PSB 01 48 690 H158,489.31
  PSB 02 55 746 H158,489.30
      
MOUNT LEINSTER CarlowPSB 0145 666 H158,489.32
  PSB 02 39 618 H158,489.30
      
MULLAGHANISH CorkPSB 01 21 474 H200,000.00
  PSB 02 24 498 H200,000.00
      
SPUR HILL Cork PSB 01 45 666 H50,118.72
  PSB 02 49 698 H50,118.72
      
THREE ROCK Dublin PSB 01 54 738 H63,095.73
  PSB 02 58 770 H63,095.73
      
TRUSKMORE Sligo PSB 01 53 730 H158,489.31
  PSB 02 57 762 H158,489.30
      
WOODCOCK HILL ClarePSB 0147 682 H10,000.00
  PSB 02 44 658 H10,000.00


Relay/Transposer Sites

Transmission Station Name
Multiplex
UHF Channel No.
Frequency (MHz)
Polarisation
Maximum E.R.P. (Watts)
ACHILL Mayo PSB 0147 682 V1,995.26
  PSB 02 44 658 V1,995.26
      
ARKLOW Wicklow PSB 01 21 474 V250.00
  PSB 02 24 498 V250.00
      
ARANMORE Donegal PSB 0147 682 V3,981.07
  PSB 02 44 658 V3,981.07
      
BALLYBOFEY Donegal PSB 0147 682 V100.00
  PSB 02 44 658 V100.00
      
BANTRY HP Cork PSB 01 52 722 H1,000.00
  PSB 02 56 754 H1,000.00
BANTRY VP Cork PSB 01 52 722 V1,995.26
  PSB 02 56 754 V1,995.26
      
CAHIR Tipperary PSB 01 28 530 V63.10
  PSB 02 25 506 V63.10
      
CASLA Galway PSB 01 45 666 V2,511.89
  PSB 02 41 634 V2,511.89
      
CASTLEBAR Mayo PSB 01 22 482 H2,000.00
  PSB 02 25 506 H2,000.00
      
CASTLETOWNBERE CorkPSB 0155 746 V3,981.07
  PSB 02 59 778 V3,981.07
      
CLIFDEN Galway PSB 01 26 514 V5,011.88
  PSB 02 23 490 V5,011.88
      
CLONAKILTY Cork PSB 01 48 690 H50.12
  PSB 02 52 722 H50.12
      
CLONMEL WaterfordPSB 01 55 746 H501.12
  PSB 02 59 778 H501.12
      
COLLINS BARRACKS CorkPSB 0150 706 V80.00
  PSB 02 37 602 V80.00
      
CROSSHAVEN CorkPSB 01 46 674 V501.19
  PSB 02 56 754 V501.19
      
DOONCARTON / IORRAS MayoPSB 0127522 H&V501.12
  PSB 02 32 562 H&V501.12
      
FANAD Donegal PSB 01 55 746 V1,584.90
  PSB 02 59 778 V1,584.90
      
FERMOY Cork PSB 01 52 722 V50.00
  PSB 02 56 754 V50.00
      
FERRYPOINT WaterfordPSB 0147 682 V50.00
  PSB 02 52 722 V50.00
      
FORTH MOUNTAIN Wexford PSB 01 52722 V500.00
  PSB 02 56 754 V500.00
      
GLANMIRE Cork PSB 01 47 682 H200.00
  PSB 02 52 722 H200.00
      
GLENCOLUMBKILLE Donegal PSB 01 45666 H200.00
  PSB 02 36 594 H200.00
      
GOREY Wexford PSB 01 55 746 H10.00
  PSB 02 59 778 H10.00
      
GREYSTONES WicklowPSB 0152 722 V500.00
  PSB 02 56 754 V500.00
      
KILDUFF TipperaryPSB 01 52 722 H25,118.86
  PSB 02 56 754 H25,118.86
      
KILKEAVERAGH KerryPSB 0147 682 V7,943.28
  PSB 02 44 658 V7,943.28
      
KINSALE Cork PSB 01 30 546 V31.62
  PSB 02 26 514 V31.62
      
KNOCKANORE (Cnoc an Oir) KerryPSB 0147 682V1,513.56
  PSB 02 44 658 V1,513.56
      
KNOCKMOYLE KerryPSB 01 52 722 V1,000.00
  PSB 02 56 754 V1,000.00
      
LARAGH Wicklow PSB 01 47 682 H25.00
  PSB 02 49 698 H25.00
      
LETTERKENNY DonegalPSB 0153 730 V1,995.26
  PSB 02 57 762 V1,995.26
      
MAAMCLASSACH KerryPSB 0146 674 V199.53
  PSB 02 51 714 V199.53
      
MAGHERAROARTY/FALCARRAGH DonegalPSB 0122482 V501.19
  PSB 02 27 522 V501.19
      
MALIN Donegal PSB 01 28 530 H1,995.26
  PSB 02 26 514 H1,995.26
      
MITCHELSTOWN CorkPSB 0140 626 V500.00
  PSB 02 43 650 V500.00
      
MONAGHAN MonaghanPSB 0155 746 H1,995.26
  PSB 02 59 778 H1,995.26
      
MOVILLE Donegal PSB 01 45 666 H1,995.26
  PSB 02 42 642 H1,995.26
      
SUIR VALLEY KilkennyPSB 0152 722 V2,000.00
  PSB 02 56 754 V1,995.00
      
TONABROCKY GalwayPSB 0126 514 V250.00
  PSB 02 23 490 V250.00
      
WATERFORD WaterfordPSB 0122 482 V250.00
  PSB 02 25 506 V250.00

Alocated Not Used

Transmission Station Name
Multiplex
UHF Channel No.
Frequency (MHz)
Polarisation
Maximum E.R.P. (Watts)
CROSSBARRY CorkPSB 0146 674 V 100.00
DRIMOLEAGUE CorkPSB 01 35 586 V 50.00
DROGHEDA Louth PSB 01 21 474 V 125.89
GREENORE Louth PSB 01 47 682 V 200.00
INISTIOGE Kilkenny PSB 01 50 706 H 100.00
KILMACTHOMAS Waterford PSB 01 51 714 V20.00
LAURAGH KerryPSB 0148 690 H 25.00
LEAP CorkPSB 01 37 602 H 20.00
TIMOLEAGUE Cork PSB 01 26 514 V 10.00

Department of Communications DTT Spectrum Planning & GE06 DTT Plan - http://www.boards.ie/vbulletin/showt...p?t=2056351646
Attached Files
File Type: xlsx Technical%20Parameters_20111004.xlsx (245.8 KB, 67 views)
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21-10-2011, 09:23   #2
Macy0161
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I haven't really been paying attention to the Relays (since we use a main Transmitter), but are all on that list on and broadcasting saorview?
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21-10-2011, 09:32   #3
The Cush
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Quote:
Originally Posted by Macy0161 View Post
I haven't really been paying attention to the Relays (since we use a main Transmitter), but are all on that list on and broadcasting saorview?
Last few sites went live at the end of May, just before Saorview officially launched - http://www.boards.ie/vbulletin/showt...2#post72394392
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21-10-2011, 09:53   #4
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Will the two Clermont Carn MUXs have different ERPs, or is that an error?
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22-10-2011, 20:30   #5
lucernarian
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That seems odd indeed, Ch53 from Clermont Carn's ERP limit is about 50kW when any previous data suggested that all multiplexes were allocated 160kW. As it stands I thought Clermont Carn was at 40kW for both multiplexes and I can say with certainty that it's not high enough to comprehensively cover its service area.

It's also the first time I've seen Greenore having an allocation assigned to it. The previous info I've seen in Comreg documents or posted on boards never mentioned Greenore in the RRC-06 allocations.

I'm not sure if Mount Gabriel is mentioned up there under another place name but it is one that should have spectrum assigned and then used by RTENL for saorview. Also Kilmacthomas, Inishtiogue, Greenore and Drogheda on one of its other allocations (instead of 2 of the PSB muxes from Divis) should have had Saorview transmitters.

It's also strange to see that Fanad has a lower ERP than Malin. Fanad's site is further away from NI and has historically served a larger area than Malin.

Last edited by lucernarian; 22-10-2011 at 20:37.
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24-10-2011, 00:12   #6
The Cush
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Quote:
Originally Posted by To_be_confirmed View Post
It's also the first time I've seen Greenore having an allocation assigned to it. The previous info I've seen in Comreg documents or posted on boards never mentioned Greenore in the RRC-06 allocations.
Greenore's planned 200W allocation was under the 250W cutoff for RRC-06 planning so wouldn't have appeared in any documents from that time.

Quote:
Originally Posted by To_be_confirmed View Post
I'm not sure if Mount Gabriel is mentioned up there under another place name but it is one that should have spectrum assigned and then used by RTENL for saorview.
Mt Gabriel doesn't have a DTT allocation, the nearest appears to be Bantry.
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24-10-2011, 01:23   #7
lucernarian
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I'm well aware of that particular aspect.

But e.g. Drogheda's allocation in the document in this thread is under the threshold for the RRC negotiations yet it was included in RRC06. The likely conclusion when this and other relays on the border in NI were previously discussed was that they were negotiated on the basis of an ERP of "250W". Mainly so that they could be coordinated as part of RRC06. In reality some of the relays will not have a power close to that even if technically the 24dBW allocation remains. E.g. Benagh, Gortnalee.

What suprises me is that the same trick was not applied with Greenore so that it could also have spectrum allocated under RRC06. If a relay with planned ERP of 21dBw 30km from the border was dragged into RRC06 then surely a relay 5km from the border would have been given the same treatment, like OfCom did with NI's relays?

Perhaps Greenore was simply an oversight on the Dept's part during RRC06 and with the congested spectrum in the area, there's simply no space for two Group B multiplexes until after ASO, thereby ruling it out.

Mount Gabriel UHF analogue TV broadcasts at 1kW EIRP if I remember correctly yet it never received an allocation... That's quite peculiar.
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24-10-2011, 08:18   #8
The Cush
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Originally Posted by To_be_confirmed View Post
What suprises me is that the same trick was not applied with Greenore so that it could also have spectrum allocated under RRC06. If a relay with planned ERP of 21dBw 30km from the border was dragged into RRC06 then surely a relay 5km from the border would have been given the same treatment, like OfCom did with NI's relays?

Perhaps Greenore was simply an oversight on the Dept's part during RRC06 and with the congested spectrum in the area, there's simply no space for two Group B multiplexes until after ASO, thereby ruling it out.

Mount Gabriel UHF analogue TV broadcasts at 1kW EIRP if I remember correctly yet it never received an allocation... That's quite peculiar.
I don't think it matters whether Greenore was included in RRC-06 or not, it was still included in RTÉ's and Comreg's plans for DTT as we can see from the Comreg document.

Greenore, Mount Gabriel and all the other approx 120 analogue sites appear to have been cut from the plans due to financial reasons when the DTT plan was was revised to 51 sites early last year following the failure of the commercial DTT process, to replaced by Saorsat coverage.

Had a look at the Louth Co Co planning website, couldn't find an application for a transmitter covering Greenore. As the allocation still exists in the Comreg documents maybe it'll come in future depending on the success of Saorsat.
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24-10-2011, 13:19   #9
lucernarian
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Then you'd have to ask why Drogheda was included in RRC06 if its impact across the border is even less than that of the Greenore relay. It was also cut from the plans, though after the Saorview rollout had started.
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24-10-2011, 13:30   #10
The Cush
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Originally Posted by To_be_confirmed View Post
Then you'd have to ask why Drogheda was included in RRC06 if its impact across the border is even less than that of the Greenore relay. It was also cut from the plans, though after the Saorview rollout had started.
It seems the plans for DTT from Drogheda were more advanced than Greenore having been included in RRC-06, Comreg 2007 list of sites and the original 53 site plan.

Why was it included and then dropped, Comreg and RTÉNL are the people to ask I guess.
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24-10-2011, 13:45   #11
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And that's the thing, the Greenore relay seemed like an afterthought after RRC06 already happened. It's clear some kind of coordination would be necessary for Greenore even if under the 250W limit. And the absence of a high-powered relay like Mt. Gabriel from any Saorview plans seems like a real oversight on ComReg's part.

Saorsat shouldn't be regarded as a panacea for coverage when it will require the purchase, install and use of specific equipment for it at a much higher cost than for the Saorview service in most cases. I guess it depends on the exact cost of providing Saorview coverage from existing sites but if Laragh, Co. Wicklow can justify it then so can Mt. Gabriel. And I do believe these allocations would have been decided on before any decision was taken on Saorsat.
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25-10-2011, 00:02   #12
Mayo Exile
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Quote:
Originally Posted by sesswhat View Post
Will the two Clermont Carn MUXs have different ERPs, or is that an error?
I'd guess its an error. MUX 1 and 2 strengths from the other Tx's seem to be the same. Is it not still the case that CC will go to 160 Kw and omnidirectional after ASO?

Error in line 4 of the spreadsheet. The frequency of Lyric FM from CC is listed as 87.8 Mhz. Line 126 says RTE Radio 1's frequency is 95.2 MHz. Should be the other way round.

Last edited by Mayo Exile; 25-10-2011 at 00:07. Reason: add to content.
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25-10-2011, 01:37   #13
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Originally Posted by To_be_confirmed View Post
the Greenore relay seemed like an afterthought after RRC06 already happened. It's clear some kind of coordination would be necessary for Greenore even if under the 250W limit.
No more an afterthought than any of the 188 planned RTÉNL PSB sites not included in the 43 at RRC-06 at the time.

My guess is the Greenore DTT site was a replacement/renaming of the exiting Carlingford analogue site, same aerial group and same max ERP.

Quote:
Originally Posted by To_be_confirmed View Post
And the absence of a high-powered relay like Mt. Gabriel from any Saorview plans seems like a real oversight on ComReg's part.
Probably a cost saving measure on RTÉ's part. Comreg said in 2007 of Mt Gabriel, Carlingford and other analogue sites at the time
Quote:
The following are sites currently in use by analogue television transmission operators and may be considered suitable for use as part of a DVB-T network. Suitable frequency assignments can be found, if a DVB-T multiplex operator so requires.

Last edited by The Cush; 25-10-2011 at 01:40.
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25-10-2011, 02:34   #14
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But Mt. Gabriel compared to Laragh, serving a lightly populated valley in Wicklow at 20W ERP? Doesn't really add up. That's up to RTE to answer I suppose.

And hold on a moment, the large majority of those 180-odd PSB sites were not 3km from the NI border and less than 10km from a relay which was allocated 8 channels from the same aerial group in NI! Coordination would be necessary even if not under the auspices of RRC06.

Your guess is likely correct in that the Carlingford relay is actually located in Greenore but is built to serve Carlingford and Carlingford is by far the larger town and more recognisable. I.e. they are talking about the one and the same site. Ch. 47 happens to be the unused allocation for TV3 from Greenore.

The cost saving is put down to "RTÉ's part" but two points must be considered there. Firstly DCENR pays RTENL's operating costs to a substantial degree and building more DTT sites is not going to come from nothing. Secondly, the DCENR helped fashion the Broadcasting Act 2009 which stipulated rather weak population coverage targets. I.e. no motivation to improve terrestrial coverage beyond the avoidance of political controversy at ASO and to ensure that advertising was still broadcast to a similar number of people as currently happens.
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25-10-2011, 09:07   #15
The Cush
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Originally Posted by To_be_confirmed View Post
And hold on a moment, the large majority of those 180-odd PSB sites were not 3km from the NI border and less than 10km from a relay which was allocated 8 channels from the same aerial group in NI! Coordination would be necessary even if not under the auspices of RRC06.
As we discussed in another thread (re: Ch 39 Mt Leinster) bi-lateral coordination on DTT frequencies has been happening since the late 90's incl post RRC-06 as has been stated by both the Dept and Comreg. The border region is no different.

Quote:
Originally Posted by To_be_confirmed View Post
The cost saving is put down to "RTÉ's part" but two points must be considered there. Firstly DCENR pays RTENL's operating costs to a substantial degree and building more DTT sites is not going to come from nothing.
RTÉ/RTÉNL operates on a budget of the Licence Fee and advertising and no additional cash has been allocated by the government to pay for the network upgrade. They are borrowing the money to pay for it.
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