I am working on integrating this information into UK Free TV. Note there are a number of sites with restricted radiation patterns. This information may take a couple of days to generate coverage maps for.
I have used the "Nominal ERPs" (the power levels most likely to be employed in practice by the licensee).
It's odd to see a transmitter (like Heathfield, The Wrekin, Llandonna) deemed to have a 'too small' household served area (e.g 50,000-150,000) to receive the extended HD Com7 and 8 ...I look at my local transmitter, which has been a full Freeview transmitter since DTT started in 1998 ... it serves just over 10,000 homes.I think the Saddleworth/Tameside area were quite lucky to be deemed big enough for DTT in 1998.
Harry: Hi, Harry. Coincidentally, I was discussing something similar with an associate yesterday! In the second World War there was a group of low power local radio transmitters around the country to provide War news to local populations. The criterion for a town to have one was that it had to have a population of 50,000.A town with population 50,000 in the early 1940s was a relatively large town back then! Tameside is a significant area within Greater Manchester isn't it? Richard, East Anglian yokel, Norwich.
Richard Cooper: I wouldn't say it's a 'significant area' but it is quite big lying to the East of the city .. Tameside is a sort of medium sized area in Greater Manchester consisting of the relatively small towns of Mossley, Stalybridge, Hyde, Droylsden, Openshaw (some of which used to lie in Cheshire).Saddleworthtransmitter serves around 60-70% of the Saddleworth area (Saddleworth consists of several small Pennine villages, all of which actually used to lie in Yorkshire), as well as upper areas of Tameside like Mossley and some of Stalybridge, hence 10,000-15,000 or so homes. In all I think we were very lucky to be deemed big enough for DTT in 1998.That's another strange anecdote of the TX ... back when it came in service (1969) virtually its whole target area was in either Yorkshire or Cheshire ... nowadays that's history and Greater Manchester has invaded the whole area now.
Alan M. Smith: Hi Alan. This is Richard instead of Mike. Hope you don't mind! Digital UK suggests that your best transmitter is indeed 'The Wrekin' and Sutton Coldfield is not listed as one of the alternatives. The alternatives listed are:- Winter Hill near Bolton in the North West and Moel -Y-Parc between Wrexham & Rhyl in North Wales if you are after THE COM7 and COM8 multiplexes. The prognosis given suggests that you'd get good reception of 107 channels & 15 HD channels from Winter Hill and 106 channels & 15 HD from Moel Y Parc. Moel -Y- Parc doesn't transmit the True Entertainment channel in Wales. Remember that The Wrekin is West/SouthWest of you, Moel - Y - Parc is roughly North West and Winter Hill is roughly North, so if you wish to use one of the alternatives to The Wrekin, the least you'd need to do would be to re-orientate the direction to which your aerial points. Hope this is roughly what Mike P would have said! Richard, Norwich.
Pretty much what I would have suggested. In time, most transmitters serving significant local populations will carry HD services as the method of encoding the digital data onto the carrier signal allows for a greater number of services to be offered - but it all takes time and money. Remember that such decisions have a commercial aspect so that can influence when and even if some transmitters become HD equipped.
Alan: Also remember that you may well need a different aerial if you want to try the other possible transmitters, their signals are often in a different aerial grouping. Plus remember that they are further away so could be weaker and more influenced by terrain and interference.
MikeP: Hi Mike. Thank you ror your comments. I hope you didn't mind my replying to Alan when he'd addressed his post to you, Mike! I didn't mention aerial groups in my initial reply, because I didn't want to overload Alan with too much information in one go - I was going to come to that later, but you beat me to it! Richard, Norwich.