Freeview reception at PGSTAR T20
Terrain between PGSTART20 and Freeview masts
For reliable and stable Freeview reception, you need an unobstructed path between the TV aerial on your roof and the digital TV transmitter.The diagrams below show the transmitters you can get a signal from - in order from best to worst. The blue line tests the line-of-sight between an aerial 10 metres above ground level (the line is red if there is an obstruction in the line-of-sight). You may be able to improve reception by raising the aerial higher - for safety's sake consult a reputable aerial installer if you need rooftop access. See below the diagrams for advanced options including selecting the receiver aerial height.
The terrain information (from Ordnance Survey and GIS) does not include forestation (where leaf cover changes with the seasons) or city buildings. The line-of-sight line can appear curved as this straight line moves over the Earth's surface.
When you click on a diagram, you will see map with the location selected shown with this symbol:
.What do the map symbols mean?
location on line-of-sight, Selected location, Freeview transmitter, Freeview light transmitter, Engineering/fault today.Advanced options
Show good and blocked paths from PGSTAR T20 for aerial height of ...10m20m (Angel of the North)25m30m40m56m (Hyde Park Flats, Sheffield)62m (Monument)90m (Royal Liver Building, Liverpool)107m (Meridian Quay Tower, Swansea)115m (Bridgewater Place, Leeds)127m (Glasgow Tower)143m (Guy's Hospital)158m (Blackpool Tower)170m (Spinnaker Tower, Portsmouth)180m (The Gherkin/BT Tower) 193m (Tower 42)235m (Canary Wharf)310m (The Shard)(default view)
Wednesday, 8 May 2013
Steveeboy: There are two properties that are important in a TV aerial: directivity and polarisation.
The DM Log aerial (Blake DML26WB) is good for touring:
TV Aerials for Boats and Caravans
It is wideband, and so is suitable for reception from any transmitter.
Those who have their aerials horizontal when signals are vertically polarised have not got them set for best reception.
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Pete Green: Please see Want EVEN better ADVANCED aerial to Freeview transmitter terrain plots? | About UK Free TV | ukfree.tv - 10 years of independent, free digital TV advice - there is now an "advanced options".
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Friday, 10 May 2013
Hi Brian, I receive Freeview TV from Whitehawk Hill, we have just been given at800 filter today (10/5/13). New 4G mobile services are coming to our area soon. I'm concerned that if this filter doesn't work we will have to switch to SKY or Virgin. We would switch to BT TV as we are with them already, but have been told BT TV will be effected too. Having to pay multiroom Sky & Virgin is a cost we could do without, but it seems this the only way we can watch Freeview TV with good signal. I would be interested in reading your thoughts about the above & wonder if you know if Whitehawk Hill will be effected by 4G and what options are there for us if this the case. I'm hearing conflicting thoughts whether BT TV will be effected by 4G or not. Totally confused now. I'm also hearing these filters we have been given may not work?? Thank you for your time with this post.
Clare
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Clare's: mapC's Freeview map terrainC's terrain plot wavesC's frequency data C's Freeview Detailed Coverage
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Michael5:08 PM
Clare McNeil: As per at800's website - if the filter doesn't work you would be provided with other means of watching TV (freesat).
If you are worried about whether it will affect you, then you should just wait and see what happens in mid-May. If you do get interference, then connect the filter as directed, and if that doesn't work then get in touch with at800. If it works or you don't get any interference in the first place, then happy days!
Lots of ifs :).
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Michael5:11 PM
Clare McNeil: For some reason half of my post was cut off!
I would suggest you just wait and see what happens around mid-May with regards interference, that way you can see if the filter makes any difference and if not, then get in touch with at800.
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P
peter tovell5:30 PM
Bolton
Since the one day closure of the winter hill transmitter in the middle of april i have been unable to receive a satisfactory service on bbc 1 or 2. The picture is either frozen or completely disjointed.I have attempted to retune both auto and manually and have also saught help from a m&s technician without success.The set is a m&s ms1551dvb.Other channels are working perfectly,Can you help.
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peter's: mapP's Freeview map terrainP's terrain plot wavesP's frequency data P's Freeview Detailed Coverage
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peter tovell5:32 PM
Bolton
Aerial in the loft.Signal on bbc channels is 72%
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peter's: mapP's Freeview map terrainP's terrain plot wavesP's frequency data P's Freeview Detailed Coverage
Clare McNeil: I really wouldn't be so concerned. Surely there are more important things that "might" happen to worry about, such as if one still has a job in six months time.
If there is interference from 4G services at 800MHz then worrying about it will make no difference.
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Hi Michael and Dave.
Thank you for your replies, hadn't thought of Freesat. Its a case of watch this space I guess. Maybe I should have explained why I am so worried about this. I have Asperger's Syndrome which is form of Autism, thus because of it I struggle with change & the unknown in life. eg in this case there are a lot of what will happen or not happen. I know it sounds stupid and it is difficult for me to explain Asperger's. I do worry about work, hence my money concerns.
Thank you for your help.
Clare
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Clare McNeil: My point was one of getting things into perspective from the point of view of the likelihood of each happening, the likely detrimental effect and the ease of enacting a solution.
I imagine that in most cases where interference is an issue that a filter will cure it. Only in extreme circumstances will a filter not rectify the issue, this being where the interfering signal is so strong.
Filters have been sent out to addresses where interference "may" be an issue. Understandably, this may provoke concern among recipients, but at the end of the day the other alternative would have been not to send them out automatically, leaving those who are affected (having turned on the 4G masts) to ring up and request a filter.
As I guess it will say in what you have received, the organisation that is carrying out the test is "at800". They say that if, during the test, viewers experience interference that they should ring them. An engineer will visit to find out what the issue is:
at800 Brighton 4G test
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