All posts by Dave Lindsay
Below are all of Dave Lindsay's postings, with the most recent are at the bottom of the page.
Peter: At only 5.6 miles with apparent clear line-of-sight to the transmitter a signal amplifier will likely be way over the top. This is unless it's for the purposes of splitting the feed so as to run to more than one room.
Terrain between ( m a.g.l.) and (antenna m a.g.l.) - Optimising UK DTT Freeview and Radio aerial location
I would get a log periodic aerial and double-screened "satellite"-grade coax cable. For example:
Aerials, TV Aerial and Digital Aerial
(Other retailers are available.)
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Helen Dargie: The people you need to call at "at800". See: Contact us | Advice or general enquiries | at800
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Jeff: Does it happen seven days a week? How about Christmas Day? I wonder if it's traffic, if you are indeed receiving from Wenvoe.
First up, check you are actually tuned to the right transmitter (the one your aerial faces).
Bring up the signal strength screen on the following:
PSB1 - BBC One - Wenvoe=C41 / Llangeinor=C59
PSB2 - ITV - Wenvoe=C44 / Llangeinor=C55
PSB3 - BBC One HD - Wenvoe=C47 Llangeinor=C50
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Eve: The fact that you are receiving BBC One East means it's tuned to the Sandy Heath transmitter rather than the Oxford one.
See if there is an option for "Region" or "Network" and if it's set on whatever Sandy Heath identifies itself by. I have no way of knowing this as I'm not in the area and the information isn't available, but the identifiers are the principle service area, so I guess Sandy Heath might have "East" or "Cambs" in the title, and; perhaps Oxford has "Oxfordshire" in. This option might be available once the scan has complete or it may be in the menu (or it may not be there at all).
The other way around the issue is to have the aerial out for the first 30% of the scan. This is because Sandy Heath's signals are lower down and Oxford's are higher up.
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Jim Carnie: There are many parts of the country which don't have line-of-sight to the transmitter and as a result reception is variable. I'm not aware of any plans to boost the power some changes were made to some transmitters at switchover but Selkirk wasn't one of them.
At your location there would appear to be clear line-of-sight to Chatton, although as you probably know, this is a BBC North East & Cumbria/ITV Tyne Tees transmitter. So you are probably served well with TV, but not the preferred region.
Your difficulty with Selkirk is caused by terrain obstruction from about 4 miles to 6 miles out from your location:
Terrain between ( m a.g.l.) and (antenna m a.g.l.) - Optimising UK DTT Freeview and Radio aerial location
On some of those high points are trees which could certainly affect the signal and mean it varies by time and weather.
And looking on StreetView, there are some big trees near to some of the houses which could further hamper efforts.
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Kath Lawson: It could be. I wouldn't do anything until work has finished.
Digital UK publishes engineering works here:
Digital UK - Planned Engineering Works
The information from that page is what Transmitter engineering uses on this website.
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Chris Kitching: A full list of Freeview services is available here:
Digital UK Industry - Channel listings
Community on LCN63 is carried on COM7 multiplex which is the quasi-national one that also carries HD services. Unfortunately it isn't broadcast from Carmel and isn't likely to be. If you can receive it from another transmitter then you will need a Freeview HD (DVB-T2) receiver, even for standard definition services carried on that multiplex.
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JOHN NASH: Because they're not all received at the same strength!
This depends on the signal path; different frequencies being affected in different ways and to different degrees. The only way that all channels would be received "exactly" the same is if there was nothing around the transmitter: no trees, no buildings, no ground, no air, no people. This is physics: as soon as you introduce objects you introduce things that can affect signals and as objects affect different frequencies differently then they may be received differently.
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Wednesday 25 March 2015 12:12PM
E Hardy: With your aerial pointing to Millom Park you can expect to receive the full complement of Freeview channels sometime never.
I had a look on StreetView and some houses have Winter Hill-facing aerials which might be an indicator that you may be able to do the same and hopefully receive all channels. The difficulty comes from the fact that the higher ground on which the town sits is in your way.
For this reason, if you do have a Winter Hill aerial installed then I suggest you retain the Millom Park one that is, due to being able to see Winter Hill you may find reception isn't perfect.