All posts by Briantist
Below are all of Briantist's postings, with the most recent are at the bottom of the page.
I note with interest that the offical site for the Irish radiation patterns, Technical Parameters - ComReg for some reason leaves out 50 degrees and 180 degrees from the speadsheet. How annoying!
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Mike Dimmick: There is a small issue with the transmitters with mixed polarity output, with only one of the two being shown at the moment. I will fix the problem in the next update, so it picks up the correct file to display.
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Ydoc: It depends on your receiver, but the answer to your question is most likely to be a yes.
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peter whiting: Look on the page for the relevant transmitter, see Hannington, Rowridge, Midhurst .
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From BBC News - New venture brings RTE and TG4 to NI homes :
The Irish Republic's competition authority has permitted the creation of a new digital television multiplex in Northern Ireland.
It will carry services from south of the border.
The joint venture by RTE (Raidio Teilifis Eireann) and Teilifis na Gaeilge (TG4) would bring programmes from both to around 90% of NI homes.
The authority consulted with broadcasting regulators in the UK and Ireland.
It found that the creation of Multiplex Broadcasting Services N.I. Limited would not substantially lessen competition in the market for the sale of television advertising.
Both the UK and Ireland are working towards the switch off of analogue signals at the end of 2012.
The new multiplex will broadcast in DVB-T2, the same parameters used by Freeview HD.
Unlike standard definition Freeview receivers, these devices can be used on both sides of the border.
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The Cush: Ofcom don't seem to have listed it yet - Ofcom | Multiplex licensees is where it should be.
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Donald: The BBC World News channel is provided for non-UK viewers, it can be watched on Astra 1L - 11597 MHz Vertical, 22000, 5/6 at your location.
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Dave Lindsay: Quickly looking at the maths from
Bit Rate Calculation for COFDM Modulation
A=54E6 * (packet length/204) = 54E6 * 1
B=A*Bandwidth= 54E6 * 1 = 54E6
C=B*modulation scheme (16QAM=0.5) = 27
D=C*code rate = 216 * .5 = 13.5E6
E=D*guard interval value = 13.5E6 * (128/129) = 13395349
So the bitrate for the multiplex is 12.77Mbps, which probably explains why the services will be SD and you can't really get more than one HD service in 12.77Mbps.
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Friday 17 February 2012 7:03PM
Pedro dd: Thanks very much, I hope you like the finished results.