All posts by Dave Lindsay
Below are all of Dave Lindsay's postings, with the most recent are at the bottom of the page.
Peddyr: Look at the radiation pattern on Kippure's page, it looks like IoM is in the main null, although the Lln Peninsula of Wales appears to be served!
Why do you want the NIMM as Clermont Carn will give you all the same channels and more? Plus if you can receive (at least) the COMs from Divis you have all the Freeview channels as well.
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Peddyr: I wonder if it is possible for the EPG data for Freeview NI and Saorview to be shared and if the authorities would do it. There is a large portion of Northern Ireland that can receive the Republic's signals so they must all be in the same boat.
I suppose that you must have the same issue when using one of the IoM relays and Divis.
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Steve: The "problems" that are reported are those issued by the broadcasting authorities rather than those of viewers.
The Commercial (COM) channels from Rowridge aren't as strong horizontally and this is because they overlap with Stockland Hill and Crystal Palace which uses the same three channels. The weaker signal and high error rate "could" be a symptom of that, the remedy being to switch the aerial to vertical polarisation to take advantage of the stronger COM signals and "rejection" of a co-channel transmitter.
This assumes that you haven't already switched your aerial.
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Steve: Since the changes in April, Rowridge transmits vertically as well as horizontally.
The PSB (Public Service) channels are 200kW horizontally and 200kW vertically. The COMs are 50kW horizontally and 200kW vertically.
The main reason for the horizontal signals are for backward-compatibility with aerials that are already fitted (horizontally).
I mentioned aerial replacements, but they shouldn't (generally speaking) be needed for Rowridge and a wideband aerial isn't needed. These tend to have less gain on the (lower) channels/frequencies that Rowridge uses so a Group A aerial (the "non-wideband" type you probably have) is the best. Turning it to vertical should do the trick.
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dan: Assuming that your RT aerial is vertical and points to Clermont Carn in Co. Louth, then you need to manually tune to UHF channel 52.
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Steve: If you are looking for an aerial or information on them, see ATV's site:
Rowridge Transmitter
If there is a good clear path to the transmitter, then the signal could be a bit on the high side. The effect can appear the same as too little a signal:
Freeview signals: too much of a good thing is bad for you | ukfree.tv - 10 years of independent, free digital TV advice
An attenuator may be useful, e.g. (other suppliers are available):
TV Aerial Attenuator Variable 0-20Db Freeview Digital | eBay
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steve: The most common answer to such a question is because they do not have HD (DVB-T2) tuners in.
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Peter: Have a look at www.mb21.co.uk
It appears to be down at the moment, but the Transmitter Gallery has BBC coverage maps for UHF and BBC Local Radio. I've not noticed that there are the maps you are looking for, but you may find them.
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Saturday 3 November 2012 10:29AM
Peddyr: Can you not receive from Clermont Carn instead?