Saorview on the Clermont Carn (Republic of Ireland) transmitter
 | Google map |  | Bing map |  | Google Earth |  | 54.079,-6.323 or 54°4'45"N 6°19'23"W |
The symbol shows the location of the Clermont Carn (Republic of Ireland) transmitter. The bright green areas shown where the signal from this transmitter is strong, dark green areas are poorer signals. Those parts shown in yellow may have interference on the same frequency from other masts.
This transmitter has no current reported problems
The BBC and Digital UK report there are no faults or engineering work on the Clermont Carn transmitter._______
Digital television services are broadcast on a multiplexes (or Mux) where many stations occupy a single broadcast frequency, as shown below.
DTG-1003 64QAM 8K 2/3 24.1Mb/s DVB-T MPEG4
H/V: aerial position (horizontal or vertical)
Which Saorview channels does the Clermont Carn transmitter broadcast?
If you have any kind of Saorview fault, follow this Saorview reset procedure first.Digital television services are broadcast on a multiplexes (or Mux) where many stations occupy a single broadcast frequency, as shown below.
| Mux | H/V | Frequency | Height | Mode | Watts |
| SV1 | V max | C42 (642.0MHz) | 626m | DTG-1003 | 160,000W |
 3 Virgin Media 1, 4 TG4 (RoI), 21 RTÉ News Now, 22 Tithe an Oireachtais , | |||||
| SV2 | V max | C45 (666.0MHz) | 626m | DTG-1003 | 160,000W |
 1 RTÉ One HD, 5 Virgin Media 2 , 6 Virgin Media 3, 7 RTÉ jr, 11 RTÉ One +1, 12 RTÉ2+1, 27 Saorview Information (*, | |||||
H/V: aerial position (horizontal or vertical)
How will the Clermont Carn (Republic of Ireland) transmission frequencies change over time?
| 1984-97 | 1997-98 | 1998-2012 | 2012-13 | 1 Sep 2019 | |||||
| A B C/D E K T VHF | A B C/D E K T VHF | A B C/D E K T VHF | C/D E T | B E K T | |||||
| C42 | SV1 | ||||||||
| C45 | SV2 | ||||||||
| C52tv_off | SV1 | ||||||||
| C56tv_off | SV2 |
tv_off Being removed from Freeview (for 5G use) after November 2020 / June 2022 - more
Table shows multiplexes names see this article;
green background for transmission frequencies
Notes: + and - denote 166kHz offset; aerial group are shown as A B C/D E K W T
waves denotes analogue; digital switchover was 1 Jan 12 and 1 Jan 12.
How do the old analogue and currrent digital signal levels compare?
| SV1||, SV2|| | 160kW |
Comments
Monday, 9 September 2019
What is going on????? No one has stated RTE is also in the forties and people now losing RTE in the fifties. Disgraceful lack of information!!!!!!!!!!
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Monday, 21 October 2019
Diplexers.
To receive both Divis and Clarement Carn, two aerials are needed. Claremont muxes are right in the middle of
Freeview 51 so 60, how can the two aerials be combined as presumably a selective Diplexer is not possible?
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Denis's: mapD's Freeview map terrainD's terrain plot wavesD's frequency data D's Freeview Detailed Coverage
MikeP
7:26 PM
7:26 PM
Denis:
The solution I used when I live in an area where I could get signals from two transmitters that were on opposite direction was to use a coaxial switch that had two inputs and one output. That meant that by merely flipping the switch I could watch signals from one transmitter or the other without any problems and no conflicts. Some people don't like tht solution because of needing to operate a simple switch - but it works perfectly.
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Wednesday, 23 October 2019
Thanks Mike, that wouldn't work here, as I am in a block of flats fed through a distribution amplifier.
Perhaps a wideband diplexer would work ok, as the Divis and Claremont Carn transmitters are in opposite directions and polarisations, so wouldn't interfere with each other.
I'm not sure if a Freevieew T2 Tuner will work for Saorview, and how the EPG (programme guide would ork).
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Denis's: mapD's Freeview map terrainD's terrain plot wavesD's frequency data D's Freeview Detailed Coverage
MikeP
9:06 PM
9:06 PM
Denis:
As we contributors are trying to assist remotely, omitting the fact that you are in a block of flats with a communal aerial is crucial information we needed.
A Freeview DVB-T2 tuner will work with any DTV service in the British Isles.
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C
Chris.SE9:31 PM
MikeP:
If you read one of Denis's other posts you can see that he's the one doing the distribution to 6 flats.
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Thursday, 24 October 2019
MikeP
8:00 AM
8:00 AM
Chris.SE:
I can't see that point in any of his recent posts. If he is the official provider of the distributed aerial system, why can he not provide a dual feed - two cables per flat with a coaxial switch so the tenant can select which source they want to watch?
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C
Chris.SE4:35 PM
MikeP:
Try Divis (Northern Ireland) Full Freeview transmitter | free and easy At least that's the interpretation I put on "I presently have an 8-element log periodic ..........."
Anyway your suggestion is a lot of extra cabling, which may be (very) difficult to install and to be frank not very convenient for a user having to switch between them. I think most users just want to use their remotes :)
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MikeP
9:23 PM
9:23 PM
Chris.SE:
But it does resolve the problem effectively. It is so easy to flip a simple switch during the installation process.
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Friday, 25 October 2019
Your assumptions are wrong. I not doing the distribution and am not providing the distribution system, officially or otherwise. I am not in the aerial business at all. I am a resident, and the point of my recent posts is simply to find an easy way of combining two aerials.
As I said, the distribution system is already in place. It has been for the past 12 years and the original installer is not known, so I can't ask him.
The switch idea is technically feasable, but as Chris says, is impractical. It would involve opening up concealed trunkings and running extra cable through cable trays and conduits - some of which are already full, and fitting coaxial switches in each resident's flat. Neither the owners nor Flat Management will sanction the cost of this. My (unpaid) task is to propose a cost-effective solution to present to management.
To try and make my question more straightforward:
The existing aerial is a single 8-element log periodic direct to a Multiswitch (distribution amplifier) where it is diplexed with four satellite LNG inputs onto a single cable to each flat. The aerial is not, as I previously thought, an active one, and does not have a masthead amp. The signals for the weaker muxes (5kW and 12kW) are ok on the top floor but not on the ground floor.
Does anyone on forum have practical experience of using two aerials to receive signals from different directions on nearby mux channels? One aerial is to receive mux channels 52 & 56, the other 51 & 60. Diplexers to discriminate between such close frequency bands are not, as far as I know, available, so a wide band combiner seems the only solution - a splitter used 'backwards' would probably do. I'd expect a loss of -6dB or more, but a masthead amp should deal with that. A potential problem is that the Saorview transmitter is only about 10 degrees off the Newcastle fill-in transmitter, so the tuners will be receiving some of the same channels from Newcastle and Divis.
It doesn't help that suppliers ofter seem to confuse "combiners" with "diplexers" (semantics I suppose).
I have been told that somehow a Freeview HD tuner EPG will discriminate between the Freeview and Saorview channels by labelling the latter in the 800+ range (I guess the software recognises the TX IDs). But how will it discriminate between duplicated Freeview channel numbers? I daresay you could delete the duplicate channels - though they would reappear on re-tuning.
I guess the only way I'll find out is to suck it and see.
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Denis's: mapD's Freeview map terrainD's terrain plot wavesD's frequency data D's Freeview Detailed Coverage
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