Mount Leinster tests

elsie1b

Does anybody know what tests are ongoing on this transmitter as in the past few days I have been unable to receive channels 39,42 and 49 from Preselli.

STB

Irish DTT. Assigned Frequencies for Mt Leinster for Irish DTT are 39 42 45 49.

Reception of UK Freeview in Ireland is freak and is likely to be wiped out locally by irish tx's in the future.

I suggest you get a satellite dish.

elsie1b

STB wrote: »

Irish DTT. Assigned Frequencies for Mt Leinster for Irish DTT are 39 42 45 49.

Reception of UK Freeview in Ireland is freak and is likely to be wiped out locally by irish tx's in the future.

I suggest you get a satellite dish.

I refer you to the inital question.
Since only channel 45 was in use up to a few days ago, I was just wondering if there was any new activity on the Irish dtt front.
Given how we're all unsure what kind of service will eventually be supplied I just thought some of our more knowledgeable members might enlighten...

STB

What part of the answer did you not understand ? Irish DTT tests is the answer.

There are 4 muxes licensed on the frequencies I gave you. That means that testing of those muxes is being carried out by RTE NL (at any time on all one or none of those channels) and any such foreign signals will get wiped out.

They have been testing various frequencies at Three rock as well essentially mirroring the output from RTE1, 2 TV3 Tg4 and a test channel on other mux frequencies with the output from the main PSB mux on 738khz. Sometimes its even just a carrier broadcasting nothing which would have the same effect.

At present RTE have 1 mux for the PSB output at each TX.
In the event that a commercial operator takes up a contract they will operate on the other mux frequencies.

What I am trying to tell you is that engineering tests continue (in preparation for the future) on ANY of those frequencies you will loose the weak signal from Wales.

mrdtv

STB wrote: »

What part of the answer did you not understand ? Irish DTT tests is the answer.

There are 4 muxes licensed on the frequencies I gave you. That means that testing of those muxes is being carried out by RTE NL (at any time on all one or none of those channels) and any such foreign signals will get wiped out.

They have been testing various frequencies at Three rock as well essentially mirroring the output from RTE1, 2 TV3 Tg4 and a test channel on other mux frequencies with the output from the main PSB mux on 738khz. Sometimes its even just a carrier broadcasting nothing which would have the same effect.

At present RTE have 1 mux for the PSB output at each TX.
In the event that a commercial operator takes up a contract they will operate on the other mux frequencies.

What I am trying to tell you is that engineering tests continue (in preparation for the future) on ANY of those frequencies you will loose the weak signal from Wales.

Note that Preseli's frequencies are changing this August. BBC Mux A will then be on Ch 43 and ITV/C4 will be on Ch 46,operating at 20kW omnidirectional. There will then be no clash following the Welsh switchover. It will be interesting to see what the coverage is in Ireland. FWIW I think Irish DTT is likely to be delayed again due to the current business and economic uncertainties in Ireland widely covered on this reflector.

Mossy Monk

Perhaps the commercial side of DTT will be delayed but what is to delay the launch of the 4 terrestrials on the tx sites already upgraded?

mrdtv

Note that the Preseli post DSO PSB channels (BBC, ITV, Four, Five etc) do not clash with Mount Leinster. The full switchover schedule is at the digital uk web site and the frequency table is found below.


http://www.ofcom.org.uk/tv/ifi/tech/dsodetails/wales_v3.pdf

mrdtv

Mossy Monk wrote: »

Perhaps the commercial side of DTT will be delayed but what is to delay the launch of the 4 terrestrials on the tx sites already upgraded?

Given that RTE are looking for a 'broadcasting bailout' the question will be who writes the cheque? I'd be interested to know the answer.

Mossy Monk

If several sites are already upgraded then why not use them for broadcasting the PSB multiplex on DTT and hold off on other sites until they can afford to upgrade them.

elsie1b

STB wrote: »

What part of the answer did you not understand ? Irish DTT tests is the answer.

There are 4 muxes licensed on the frequencies I gave you. That means that testing of those muxes is being carried out by RTE NL (at any time on all one or none of those channels) and any such foreign signals will get wiped out.

They have been testing various frequencies at Three rock as well essentially mirroring the output from RTE1, 2 TV3 Tg4 and a test channel on other mux frequencies with the output from the main PSB mux on 738khz. Sometimes its even just a carrier broadcasting nothing which would have the same effect.

At present RTE have 1 mux for the PSB output at each TX.
In the event that a commercial operator takes up a contract they will operate on the other mux frequencies.

What I am trying to tell you is that engineering tests continue (in preparation for the future) on ANY of those frequencies you will loose the weak signal from Wales.

The attitude actually.
I have used freeview for many years now and know the channel allocations for Irish dtt and how they will interact after dso.
I also have a satellite dish to receive "foreign signals" but I was just wondering if the use of the 39,42 and 49 channels was a signal (pardon the pun) of a start of Irish dtt or just further testing.

STB

elsie1b wrote: »

The attitude actually.
I have used freeview for many years now and know the channel allocations for Irish dtt and how they will interact after dso.
I also have a satellite dish to receive "foreign signals" but I was just wondering if the use of the 39,42 and 49 channels was a signal (pardon the pun) of a start of Irish dtt or just further testing.

What attitude. The helpful attitude of responding to your question?

The tests you asked about are the engineering tests for Irish DTT.

By foreign broadcasts I was referring to "Freeview Terrestrial" which are freak as the output licensed for those frequencies is not to cover Ireland believe it or not. Any further tests for the Irish assigned frequencies between now and UK Freeview DSO would likely to be effected as other "more knowlegable" posters have also told you.

elsie1b

STB wrote: »

What attitude. The helpful attitude of responding to your question?

The tests you asked about are the engineering tests for Irish DTT.

By foreign broadcasts I was referring to "Freeview Terrestrial" which are freak as the output licensed for those frequencies is not to cover Ireland believe it or not. Any further tests for the Irish assigned frequencies between now and UK Freeview DSO would likely to be effected as other "more knowlegable" posters have also told you.

Perhaps you should tell all those up the east coast and the border counties who have availed of the signal spillover for many years that they should not have used this freak service.
Anyway I have no agenda as I avail of freeview ,freesat and sky.
I'm looking forward to our dtt starting up for real so that I can then get an stb for mpeg 4 when they get officially launched.
I was not lamenting interference between freeview and Irish dtt but was just wondering if the activity on the other frequencies spelled a start to the service or not as the case may be.
Now breathe in and count to 10...

Mossy Monk

elsie1b wrote: »

Perhaps you should tell all those up the east coast and the border counties who have availed of the signal spillover for many years that they should not have used this freak service.

It is a case of tough luck I'm afraid.

elsie1b

Mossy Monk wrote: »

It is a case of tough luck I'm afraid.

Ah well ,here in Wexford ,we'll still be able to receive the Uk channels 1 to 5 after dso and they will hopefully be augmented with Irish dtt.

lucernarian

I'm not sure what's tough luck or is "freaklike" here. There are many places along the border where the laws of physics inevitably mean that people in the Republic can pick up >60 dBuV BBC signals out of sheer proximity to the transmitter.

Signal overspill is not a freak event, as it's expected and inticipated. Some of it will remain after Ulster and Wales DSO, no matter what Eamonn Ryan might say. Each transmitter is more "not not licenced" to have overspill, as a necessary evil for getting adequate coverage in border areas. Overspill is allowed to the point that it intereferes in any way with a cross-border TV signal.

STB, the OP simply wanted to know if anything had changed with the transmitter's test broadcasts in the last few days. I'd say the OP already knows that the RTE tests could or are taking place on 4 UHF frequencies:).

AS for the actual topic, I do not know if changes have taken place recently on Mt. Leinster.

elsie1b

Mount Leinster is now just transmitting on 45 again.
Given RTE's finances and the present economic conditions for any group starting up a dtt service I'd just like to see the official launch occur of our 4 terrestrials before the rug is pulled out completely on Irish dtt.
After all we do have a few banks to bail out,who needs dtt anyway ????

marclt

Does anyone know what frequency the Irish PSB mux will occupy after Irish DSO? If they are testing Ch 45 now.. will it stay there?

The Preseli frequencies post DSO are as follows:

Preseli BBC A: 43+ 20kW ITV: 46+ 20kW BBC B: 50+ 20kW
Preseli SDN: 42- 10kW* Arq :45- 10kW* Arq B: 49- 10kW*

All frequencies will be precision offset. (* - operating at 2kw until 2010)