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Saorview on the Clermont Carn (Republic of Ireland) transmitter

first published this on - UK Free TV
sa_gmapsGoogle mapsa_bingBing mapsa_gearthGoogle Earthsa_gps54.079,-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.

Choose from three options: ■ List by multiplex ■ List by channel number ■ List by channel name
_______

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.

MuxH/VFrequencyHeightModeWatts
SV1
 V max
C42 (642.0MHz)626mDTG-1003160,000W
Channel icons
2 RTÉ2 HD, 3 Virgin Media 1, 4 TG4 (RoI), 21 RTÉ News Now, 22 Tithe an Oireachtais ,

SV2
 V max
C45 (666.0MHz)626mDTG-1003160,000W
Channel icons
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 (*,

DTG-1003 64QAM 8K 2/3 24.1Mb/s DVB-T MPEG4
H/V: aerial position (horizontal or vertical)

How will the Clermont Carn (Republic of Ireland) transmission frequencies change over time?

1984-971997-981998-20122012-131 Sep 2019
A B C/D E K T VHFA B C/D E K T VHFA B C/D E K T VHFC/D E TB E K T
C42SV1
C45SV2
C52tv_offSV1
C56tv_offSV2

tv_off Being removed from Freeview (for 5G use) after November 2020 - 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
C
CARL READE
sentiment_satisfiedBronze

5:39 PM

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!!!!!!!!!!

link to this comment
CARL READE's 50 posts GB
Monday, 21 October 2019
D
Denis
sentiment_satisfiedBronze

5:46 PM
Downpatrick

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?

link to this comment
Denis's 22 posts GB
MikeP
sentiment_very_satisfiedPlatinum

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.



link to this comment
MikeP's 3,056 posts GB
Wednesday, 23 October 2019
D
Denis
sentiment_satisfiedBronze

8:00 AM
Downpatrick

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).

link to this comment
Denis's 22 posts GB
MikeP
sentiment_very_satisfiedPlatinum

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.



link to this comment
MikeP's 3,056 posts GB
C
Chris.SE
sentiment_very_satisfiedPlatinum

9:31 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.

link to this comment
Chris.SE's 2,560 posts GB
Thursday, 24 October 2019
MikeP
sentiment_very_satisfiedPlatinum

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?



link to this comment
MikeP's 3,056 posts GB
C
Chris.SE
sentiment_very_satisfiedPlatinum

4:35 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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Chris.SE's 2,560 posts GB
MikeP
sentiment_very_satisfiedPlatinum

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.



link to this comment
MikeP's 3,056 posts GB
Friday, 25 October 2019
D
Denis
sentiment_satisfiedBronze

5:33 PM
Downpatrick

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 22 posts GB
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Your comment please
Please post a question, answer or commentIf you have Freeview reception problems before posting a question your must first do this Freeview reset procedure then see: Freeview reception has changed, Single frequency interference, and Freeview intermittent interference.

If you have no satellite signal, see Sky Digibox says 'No Signal' or 'Technical fault'

If you have other problems, please provide a full (not partial) postcode (or preferably enter it in box at the top right) and indicate where if aerial is on the roof, in the loft or elsewhere.

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