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Improvements to UK Free TV transmitter mapping launched

With the tenth anniversary of UK Free TV coming up in June, I have taken the opportunity to update the mapping used on the site, for a third time.

With the tenth anniversary of UK Free TV coming up in June, I h
published on UK Free TV

All of the pages showing the transmitter maps now have much better resolution (200m squares) and this has allowed for more accurate mapping to be calculated displayed.

The first improvement is that the new transmitters that were added to the network during digital switchover now display with their coverage area.

new digital TV transmitters

For the transmitters where the system has the radiation pattern from the BBC Freedom of Information request, this is now shown in the calculated coverage area:

Grantown link example

For the masts that have a Freeview service before the switch to digital-only transmission, this can be seen by clicking on the "pre-DSO 1" option on a transmitter page. This is the default for any transmitter that has not yet switched over.

Olivers mount transmitter as an example of new maps

By comparison, this is how the mapping appeared before:

Old style Olivers mount map

Also, the site now contains the details of the Saorview transmitters in Ireland.

Cairn Hill Saorview transmitter map example

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Tuesday, 21 February 2012
Mike Dimmick

11:32 PM

Be aware that HP and VP aerials from the same site may point in different directions. For example, you've done plots for both Hemdean HP and Hemdean VP, but you've used the VP radiation pattern for both. The page currently only shows my VP plot, the HP plot is at http://i1211.photobucket.….png .

Unfortunately I don't think we have plots for all HP/VP transmitters.

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Mike Dimmick's 2,486 posts GB flag
Wednesday, 22 February 2012

6:57 AM

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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Briantist's 38,910 posts GB flag

12:45 PM

Brilliant work!much more accurate graphics.
This is invaluable source of information for Aerial installers.Thank you.
Can you make the transmitter icon,a little more transparent?though.

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Aerialman's 140 posts GB flag
Thursday, 23 February 2012

5:55 AM

Excellent stuff Brian

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Phil's 39 posts GB flag
Phil's: mapP's Freeview map terrainP's terrain plot wavesP's frequency data P's Freeview Detailed Coverage
Sunday, 26 February 2012

2:17 PM

Phil/Aerialman: Thank you for your kind comments, it makes all the hard work worthwhile!

I'm not sure that the Google Map API allows for the icons to be transparent, I will look into it.

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Briantist's 38,910 posts GB flag

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