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Tuesday, 30 June 2015
Stuart Owens
sentiment_satisfiedSilver

12:05 AM
Wrexham

I once used UK Free TV to ask its users if they could name what I thought was a transmitter mast in the distance as I could see something with red aircraft warning light lit up in the distance, turned out to be just a chimney tower at a power station.

This time I would like to ask if anyone knows what the 5 transmitter masts are all used for, very close together around Newton, near Frodsham in Cheshire?
There are two off Simons Lane which on Google Streetview shows a little car parking area with the names 'Beacon Hill' and 'Sandstone Trail'. There is one on its own, East off Dobers Lane parallel with Manley Road.
There are three, North at the junction of Dobers Lane with Meeting House Lane.
I'm curious why the need for so many in such a small area? Why not just build two or three larger ones on the same land as each other?
Anyone know what purpose each mast is used for?
A friend told me once that there are radars used for Air Traffic Control for Manchester/Liverpool airports on the top of the Helsby Hill, though these masts I have written the location of aren't really in Helsby as such.

Am I correct about these?
Can anyone else give me any more details and information on these masts?
I see them to and from work so just curious about them as I'd like to take a trip up there and see them sometime.

Thanks,
Stuart.

Google Maps

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Stuart Owens's 156 posts GB
Tuesday, 7 July 2015
G
Gillian
5:02 PM
Ludlow

We have lost 50 TV channels in the past few days. Location: SY8 3DE. 7th July 2015.

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Gillian's 1 post GB
M
MikeB
sentiment_very_satisfiedPlatinum

6:44 PM

Gillian: Sounds like you have a sick aerial system, so that the bulk of the channel are lost. Check your signal strength and your system.

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MikeB's 2,579 posts GB
Dave Lindsay
sentiment_very_satisfiedPlatinum

7:54 PM

Gillian: A terrain plot shows quite a few obstructions by the terrain alone, with objects on the ground no doubt being in the way as well:


Terrain between ( m a.g.l.) and (antenna m a.g.l.) - Optimising UK DTT Freeview and Radio aerial location


At 10 miles away you have the high ground of Bredenbury. And between 4 and 7 miles out there is also ground in the way.

As signals travel in straight lines, you are having to rely on them bending around the obstructions. Different frequencies bend to differing degrees and changes to the objects they are bending around can result in changes in reception.

While, as MikeB says, it could be your aerial system at fault, variable reception may be an occupational hazard.

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Dave Lindsay's 5,724 posts GB
Wednesday, 29 November 2017
K
Keith Cunliffe
8:30 PM

Does anyone know what the channels for the Bromsgrove and Malvern transmitters will be after the 700 clearance after March 2018: thank you

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Keith Cunliffe's 8 posts GB
S
StevensOnln1
sentiment_very_satisfiedPlatinum

11:22 PM

Keith Cunliffe : According to Digital UK's checker, Bromsgrove PSB1/2/3 will remain on UHF 26/23/30 with COM4/5/6 moving to 33/36/48 on 7th March 2018. Malvern PSB1/2/3 will be moving to 41/44/47 and COM4/5 moving to 29/31 on 7th March 2018, however COM6 will move to 37 a week earlier on 1st March.

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StevensOnln1's 3,154 posts GB
Friday, 1 December 2017
K
Keith Cunliffe
9:22 PM

Keith Cunliffe :
Many thanks for your information so quick, thank you
Do you know then as a result, of the change on 7:3:18 at the bromsgrove and Malvern transmitters, when the COM 7 & 8 on channels 35 & 37 at Sutton Coldfield shuts down, and what happens to the services on those channels, Likewise ch. 51 at Sutton Coldfield also closes around that time , where does these services go.,
Thank you for your valued help.

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Keith Cunliffe's 8 posts GB
S
StevensOnln1
sentiment_very_satisfiedPlatinum

11:40 PM

Keith Cunliffe : COM7 & COM8 are moving to UHF 55 & 56 across all transmitters that broadcast them (this change will take place at Sutton Coldfield on 7th March 2018) where they will remain until some time between mid-2020 and 2022 (no closure date has been announced but 2022 is believed to be the latest possible). The Sutton Coldfield local mux will move from UHF 51 to 48 with a duplicate on 36 on 7th March 2018 (these will presumably be broadcasting with different radiation patterns). All this information is coming from Digital UK's coverage checker (link below) - enter a postcode and tick the detailed view box to see full transmitter details.

Digital UK - Coverage checker

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StevensOnln1's 3,154 posts GB
Saturday, 2 December 2017
K
Keith Cunliffe
8:39 AM

Thank you for the information regarding com,s 7 & 8 But I would query your point that every transmitter will use ch. 55 & 56, if this is true, then we have a situation in that Winter Hill and Moel-Y-Parc which are both in sight of one another using the same channels as well as at Sutton Coldfield, surely this will cause problems of pixilation, I know from experience that the signal from Winter Hill can be received at MYP on a piece of wet string with plenty to spare,. Interesting!
Concerning the local channel at SC. Which you advise changes to 48, another anomaly arises , it's relay at Bromsgrove Also is to use ch.48. for one of the COM muxs , since bromsgrove directly receives its signal off air from SC another problem is likely to arise, many to the east of Kidderminster use bromsgrove or SC. .. and from March with two separate services on the same channel ?
Anyway, my sincere thanks for all your help, ..

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Keith Cunliffe's 8 posts GB
S
StevensOnln1
sentiment_very_satisfiedPlatinum

11:30 PM

Keith Cunliffe : COM7 & COM8 will each operate as a single frequency network. There will be areas where some viewers will loose coverage of COM7/8 due to interference. If you enter Winter Hill's postcode into the Digital UK checker it shows that COM7 at WH will move to UHF 55 on 7th March 2018 and COM8 will move to 56 in early 2020. MYP has COM7 moving to 55 in early 2019 and COM8 moving to 56 in Spring of 2020.

The issue you've identified regarding UHF 48 at Sutton Coldfield and Bromsgrove is probably why the local mux from SC will be duplicated across two frequencies with different radiation patterns (I haven't seen a coverage plot so don't know what the radiation patterns are). Try entering a postcode from that area into the Digital UK checker and see what it predicts for the services on UHF 48 following the changes.

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StevensOnln1's 3,154 posts GB
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