All posts by Michael Perry
Below are all of Michael Perry's postings, with the most recent are at the bottom of the page.
Geoff Punnet:
If you look at the Digital UK data for Usk it show it as Vertical and not horizontal. See Coverage Checker - Detailed View for details at your location. (John Robinson's information is not correct.)
Though you may get some signals from Mendip many of the channels will give very poor reception so cause more problems. Likewise, Wenvoe is closer but reception is predicted as being even worse than Mendip!
So it would be best, at present, to stay on the Usk transmitter with your aerial Vertical and not change it to horizontal. Your neighbours my betrying to get Mendip signals but probably suffering more problems that you are at present.
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Donald Kirkbride:
A signal strength of 93% is too high! Ideally you want between 60% and 85% else the tuner can be overloaded and appear deaf - hence the loss of some/all channels and the misleading message saying no signal.
The weather related problems you saw in the '60s is exactly the same now and affected digital transmissions in exactly same way now as it did the older analogue transmissions. Physics has not changed.
So I advise you to check your signal strengths again and if they are above 85% then you need to reduce them using an attenuator, start with one of 3dB.
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Hope:
BBC4 HD is now carried on COM8 and requires a TV that is Freeview HD capable. Depending on which transmitter you are using, you may b=need a different aerial as many now broadcast it on Channel 56, and some need a wideband aerial to receive that.
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GillGill:
The refector does not attach to the pole but the aerial arm instead and its position is very critical. It would be best, and safest, to replace the aerial with a new wideband type to ensure it is in good condition, working correctly and suitable for all future transmissions as there are planned changes due to happen over the next several years. Only a wideband aerial design will cope with the numerous changes expected.
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James:
Please provide a full post code so we contributors can see what the expected signal reception conditions are like at your particular location.
In the circumstances you describe, retuning was the worst thing to do as all that has happened is you have lost some channels that were working.
With your full post code we may be able to offer more helpful suggestions.
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Paul Cohen:
To check, please put your post code into the Digital UK Coverage checker and scroll down to the transmitter listing section. That will show which channels are being used for the available multiplexes.
We contributors are aware that the details given on these pages for the many transmitters is now out-of-date, but the site owner has not yet updated them for a few months now. Only he can perform the uopdate needed.
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Peter:
Look at the 'digitaluk trade' link below your post (it's at Coverage Checker - Detailed View and check which transmitter you are tuned to. It would seem that Though Bluebell Hill is listed first, it is not ideal as some multiplexes are predicted to have variable or poor reception.
You may do better to use either Crystal Palace or Tunbridge Wells transmitter - but you will need to be using a wideband aerial (which you should already be using for Bluebell Hill anyway - if you're not then that does not help your reception). Note that you would not get COM7 or COM8 from either of those transmitter sources.
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Paul Bale:
Streaming services do not use any form of RF transmission, it's all via your internet connection. That needs to be at least a reliable 4 Mbps for SD, at least 15 Mbps for HD and for UHD it will need to be over 40 Mbps and those speeds will need to be stable even at peak times.
Where I live, we get reliable 40+Mbps all day and throughout the evening so streaming HD programmes is reliable.
In many rural areas, such as where I used to live, we were lucky to get 2 Mbps and that is useless for streaming any form of TV programmes.
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Brian Wright:
As yet the broadcasting of UHD programmes has not been finalised, there are many technical issues needing to be resolved first.
Many TVs may be equipped with UHD capable displays but they will not yet be equipped with the necessary tuners or decoders for the UHD signals that may be transmitted in the future. The current Freeview SD transmissions used a form of encoding called DVB-T and that works for only SD standard images. The Freeview HD transmissions use a form of coding called DVB-T2, which can carry much more data so is used for HD. However, it is not suitable for UHD so a further increment in the encoding technique is required. Then the transmitters would need to be equipped with the capability to transmit those signals. So true UHD broadcasting is a way off yet.
You would also do better to wait for the encoding to be finalised so the set manufacturers can build in the needed eqipment to receive and decode the signals. Else you would need to ad an external box capable of UHD reception when they become available.
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Friday 27 July 2018 3:26PM
David Mansell:
If you wish to inform the transmitter operator of some problem or comment please contact Arqiva at https://www.arqiva.com/co…us/.
As stated many times, we contributors to this independent website have no connection with any broadcaster nor transmitter operator.