Menu buttonMENU    UK Free TV logo Help!
securesearchsettings

 

 

Click to see updates
To join, leave or change ukfree.tv updates by email, enter your email address here:
 

Transmitter map updates are coming - soon

I am currently reworking the code that produces the transmitter coverage area maps to provide more detail.

I am currently reworking the code that produces the transmitter
published on UK Free TV

I am using a Amazon Elastic Compute Cloud (Amazon EC2) - High-CPU Extra Large Instance to perform the calculations more quickly than my own PC can manage and without slowing down the main UK Free TV server.

7 GB of memory, 20 EC2 Compute Units (8 virtual cores with 2.5 EC2 Compute Units each), 1690 GB of local instance storage, 64-bit platform

The first stage has been to import several sources of height information - including Ordinance Survey, which has resulted in a much more accurate. Here is an example - the level of brightness in the red has the height in meters encoded:



The second (and high CPU stage) which is operating at the moment, is to take each transmitter location and each operating height from each transmitter and calculate the locations where an aerial 10 meters above ground has a line-of-sight to the transmitter. Here is an example:



The next function is to take the 3D radiation patterns from the BBC FOI data and create maps of each of these, for example.



The next stage, which I hope will complete shortly, will be to combine all these bits of information into a single graphic for each multiplex from each transmitter.

Finally, I will change the interface on the mapping pages to allow viewing the coverage areas for each multiplex.

I am also considering adding the Saorview transmitters to the maps.

As usual, I will be interested in any comments.



All questions
Can I stop paying Sky and use my satellite receiver to get Freeview ?1
My Freeview box has no EPG, is blank on FIVE, ITV3, ITV4, ITV2+1, has no sound o2
What can I do when my Sky Digibox says 'No Signal' or 'Technical fau3
My Sky box has a "no signal message" - what do I do?4
How do I change the RF output channel on a Sky Digibox?5
In this section
Seeing something different? We are doing A/B testing on a new Material Design1
Please share your thoughts about UK FREE TV2
The next 50 things on UK FREE TV. What would you like to see? 3
UK Free TV now uses friendly web addresses4
Best ever emails and improved menus on UK FREE TV5
Use the Knowledge base to find answers to your technical problems6

Comments
Friday, 17 February 2012
Briantist
4:32 PM

david: Thanks very much. Yes, this will be for all maps - when it's all completed. The pages showing for Ireland (NI and RoI) now show the new overlay format - see Digital TV transmitters in Ireland - update | ukfree.tv - independent free digital TV advice .

link to this
Briantist's 38,745 posts Owner Owner GB
Briantist
7:03 PM

Pedro dd: Thanks very much, I hope you like the finished results.

link to this
Briantist's 38,745 posts Owner Owner GB
Saturday, 18 February 2012
D
Des Collier
7:09 PM

Nice one Brian,come up with the goods again!!

link to this
Des Collier's 171 posts Silver Silver GB
Sunday, 19 February 2012
M
Mick Shearer
6:15 PM

How to get a signal in the Peak District, namely "Whatstandwell".

link to this
Mick Shearer's 1 post GB
K
KMJ,Derby
7:10 PM

Mick Shearer: What services are you refering to regarding getting a signal? The postcode of the location in question would be usefull in order to do a check of the predicted reception. Generally speaking TV reception is often from Bolehill on the PSB muxes only. Regarding DAB radio the Bolehill transmitter is listed for inclusion in the plan for Derbyshire. When completed this will deliver the BBC national multiplex, and should also carry the proposed Derbyshire multiplex in the event of it actually coming on air!

link to this
KMJ,Derby's 1,811 posts Gold Gold GB
Sunday, 26 February 2012
Select more comments
Page 2

Your comment please
Please post a question, answer or commentUK Free TV is here to help people. If you are rude or disrespectful all of your posts will be deleted and you will be banned.







Privacy policy: UK Free Privacy policy.