All posts by Dave Lindsay
Below are all of Dave Lindsay's postings, with the most recent are at the bottom of the page.
susan milford: In order to answer the question: Which channels? Where are you (preferably postcode)?
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larry : If you are receiving from Whitehawk Hill (adjacent to Brighton Racecourse) then its BBC region changed to South East and the editorial region was adjusted accordingly.
Depending on your location you may be able to receive BBC One South from Rowridge on UHF channel 24, this being in roughly the opposite direction to where your aerial faces (assuming it points to Whitehawk).
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Mike Buttriss: In answer to your question, let me answer it the other way around: "Why are all other channels received OK?"
Signals travel in straight lines. If you don't have line-of-sight then you are relying on the bending effect over objects that are in the way. Generally speaking, the more that you are away from line-of-sight the more likely you are to find that in one particular spot some signals are good and others not so. Plus, you also have the effect of the trees of Trebursye Wood which are in your way and which will therefore likely affect the signals, each one to differing degrees because they are at different frequencies.
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Chris: A Freesat box is for reception of free-to-air channels via satellite and has nothing to do with the Stroud transmitter, which is Freeview.
You say that you are tuned into Stroud transmitter but that you cannot get any channels which sounds like an oxymoron. If you are tuned you must surely be able to watch the channels.
The Stroud transmitter will only give you the Public Service channels, if that's what you mean. These are BBC SD TV, BBC national radio, ITV, ITV+1, ITV2, Channel 4, Channel 4+1, E4, Film4, More4, Channel 5 and HD streams of BBC One, BBC Two, BBC Three, CBBC and Channel 4.
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Chris: Freesat and Freeview are names of different platforms. The channel line-up on each is different. A comparison is here:
https://ukfree.tv/chan…esat
Perhaps notable exceptions to the Freesat line-up which are on full Freeview are Dave, Drama and Yesterday. "Freeview" encompasses free-to-air terrestrial broadcasts, including the Public Service Broadcaster (PSB) ones. Thus, you have what is unofficially termed "Freeview Lite".
So, Freesat will give you all the PSB channels you have now plus others.
The full complement of Freeview channels consist of two types: the Public Service Broadcasters (PSBs) and Commercial broadcasters (COMs). The COM channels have no obligation to provide a Public Service and so are carried from only the largest transmitters. For a further explanation, see:
Which Freeview channels does the Londonderry transmitter broadcast?
However, at your location you "may" be able to receive from Wenvoe, the main transmitter which serves Cardiff and the surrounding portion of South Wales. This may allow you to receive the COM channels, albeit that it would give you BBC One Wales, BBC Two Wales and ITV Wales, rather than BBC One West, BBC Two England and ITV West, which is what Stroud carries.
A look on Streetview (photos taken August 2010) shows a few Wenvoe-facing aerials on Chapel Lane: number 8 and The Old Crown Inn. It is at 246 degrees and aerials are horizontal (elements flat), rather than vertical (elements up/down) as with Stroud. It might be worth enquiring whether they can get all the channels and whether they are stable or whether reception varies, perhaps by time of year.
The terrain plot shows that there are some obstructions up to 8 miles out between you and Wenvoe, so this could possibly hamper reception:
Terrain between ( m a.g.l.) and (antenna m a.g.l.) - Optimising UK DTT Freeview and Radio aerial location
If you go down the route of a Wenvoe aerial then you might use a separate Freeview box for your Stroud aerial (so as to watch regional programmes) and the internal TV tuner for the Wenvoe one, or vice versa.
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Kevin Ross: Have you checked that you are tuned to Black Hill rather than Darvel, assuming your aerial points to it? Darvel's channels are lower down and will therefore be picked up before Black Hill's.
Darvel
BBC One = C22
STV = C25
BBC One HD = C28
ITV3 = C23
Pick = C26
4Music = C29
Black Hill's six channels are 46, 43, 40(HD), 41, 44 ,47
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Kevin Ross: The UHF channel numbers I gave above are normally given on the signal strength screen. Confirm that those of Black Hill are tuned rather than those of Darvel.(I assume here that your aerial points to Black Hill which is due east.)
If you find that it is tuned incorrectly then you need to retune, either by:
- clearing what's already stored and manually tuning the five (six if it's HD) channels, or;
- having the aerial unplugged for the first portion of the scan where Darvel's channels are scanned.is one way to avoid it. Plug in at 30% or once it's scanned UHF channel 30 if it gives channel numbers.
However, this only need be done if it's tuned incorrectly.
Communal aerial systems are often filtered so as to only allow through from the aerial the frequencies used by the designated transmitter. Therefore, under such circumstances it's not possible to pick up the "wrong" transmitter.
Any 4G 800MHz filter should be fitted before any signal amplifer/booster as the 4G signal can overload it. As it's a communal system then it will have an amplifier and so fitting the filter in your dwelling won't stop the 4G signal from going through the amp.
See if others in the block have the same issue. The fact that they don't doesn't necessarily mean that it isn't an aerial system problem but the fact that you have been provided with a 4G filter suggests that your address could be expected to issues. In which case you need to contact the party responsible for the aerial system to get it put right.
You will not need a filter adjacent to your TV/box as the system will be filtered, so it will serve no purpose.
My advice would be to keep it. at800 (the organisation giving out these filters) is only giving one per address. If you know someone who needs two you might like to donate your unwanted one, rather than throwing it in the bin.
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Kevin Ross: Try a different lead from wall socket to Youview box. If the problem remains then it rather points to the issue being with the signal that is coming out of the wall socket, in which case it doesn't actually matter what the issue is as it's not your job to fix it - you simply report it to the responsible party.
But the fact that the 4G filter arrived and that the signal is poor suggests that it could be a 4G signal overloading the amplifier, which needs an engineer sort it.
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Saturday 15 November 2014 4:55PM
Andy: If you have a signal amplifier then the filter needs to go before it as the amplifier itself could be being overloaded by the 800MHz 4G signal.
In any case, why have you got a signal amplifier when you live within a stone's throw of the Ladder Hill transmitter?