All posts by Dave Lindsay
Below are all of Dave Lindsay's postings, with the most recent are at the bottom of the page.
JP: COM5 is on C59 which is the closest of all Pontop's channels to any potential 4G signal operating in the 800MHz band (C61 to C69).
It might be worth checking with at800, the organisation set-up by the 4G operators, to see if it could potentially be a cause:
Contact at800 / DMSL | General Enquiries | at800
If you have any kind of amplifier in-circuit then any filter will need to go before it, should it turn out to be a 4G signal.
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Richard Nutter: It is a possibility, if the aerial points to Emley Moor, that you have the best you can get, in view you being low down with higher ground in the way.
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K. Keen: The one showing Look North Hull is tuned to Belmont and not Emley Moor.
Try having the aerial unplugged for the first 30% of the scan so as to miss out Belmont's PSB channels.
Once completed do a check to see that the TV is tuned to Emley Moor for all channels. Do this by viewing the signal strength screen and observing the tuned UHF channel number on each of the following:
PSB1 - BBC One - C47
PSB2 - ITV - C44
PSB3 - BBC One HD - C41
COM4 - ITV3 - C51
COM5 - Pick - C52
COM6 - 4Music - C48
COM7 - BBC News HD - C32
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K. Keen: The back of the aerial is quite sensitive whereas the sides are least sensitive. Plus Belmont is found before Emley during the scan, so the TV could, potentially, just go with the first it finds rather than "deciding" based on which is strongest.
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Ben: In answer to your first question: because the issue which affects the BBC standard definition (PSB1) signal does not affect the others, or if it does not to the degree which causes poor quality and therefore breakup.
Why have you got a high gain aerial? You are 16 miles from the transmitter and have clear, or near clear, line-of-sight:
Terrain between ( m a.g.l.) and (antenna m a.g.l.) - Optimising UK DTT Freeview and Radio aerial location
Perhaps your choice of aerial is resulting in an OTT signal level:
Freeview signals: too much of a good thing is bad for you | Digital switchover | ukfree.tv - 11 years of independent, free digital TV advice
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Ben: Before considering whether this might be too high a signal level, or any other possibility for that matter, check that it is tuned to Angus and not Durris for PSB1 (BBC SD TV and radio).
View the signal strength screen whilst on BBC One. It should say it is tuned to UHF channel 60 (786MHz or 785.8MHz). Durris' PSB1 is on C28 (530MHz).
If your TV is found to be tuned to Durris then having the aerial unplugged for the first 30% of the digital scan should rectify the issue. This is because Durris' frequencies are low down and those of Angus are higher up.
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Carnmoney Hill (Northern Ireland) Freeview Light transmitter
Thursday 30 January 2014 2:30PM
Newtownabbey
Thursday 30 January 2014 2:30PM
Newtownabbey
P: Silly statement: The aerial should be vertical and not horizontal.
As a sample I took the postcode BT37 9QW which is adjacent to Christ Church and the row of shops.
Digital UK suggests excellent reception of all four of Carnmoney's channels. This, of course, does not take into account obstructions such as trees and buildings which may act to degrade reception.
I suggest you try using the manual tuning function on your receiver. If you enter/select the UHF channel but do not press the button to scan/add services as in such circumstances receivers often behave as signal meters.
If you have more than one receiver (box, TV etc) you might wish to have a look to see which is likely to be most useful as not all have manual tuning. The channel numbers are:
PSB1 - BBC One - C46
PSB2 - ITV - C40
PSB3 - BBC One HD - C43
NI Mux - RT One - C48
The standard definition ones (PSB1 and PSB2) use DVB-T mode; PSB3 and NI Mux use DVB-T2, so if the manual tuning screen has an option for this, ensure it's correct as it won't find the signal even if it's present.
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Nick Anderson: No it does not.
London Live will broadcast only from Crystal Palace, so all its relays won't carry it. It will also be radiated at lower power than the other channels, plus its radiation pattern is from about the 8o'clock position to the 2 o'clock position from the tower (see the radiation pattern on the page for Crystal Palace).
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Caz: Your blond husband is switching off the booster which is likely to be located adjacent to the aerial. What is referred to as a "booster" is in fact a power supply for a booster which is fitted where the single feed from the aerial splits into two, one to each room. Thus, by turning off the power supply the booster has no power and a booster with no power will give out little or no signal.
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Tuesday 28 January 2014 2:15PM
Richard Nutter: Where's your aerial pointing????
If it points to the Halifax relay transmitter then it doesn't broadcast this and other Commercial (COM) channels so you must be picking the signal up from elsewere (Emley Moor) which means it's off-beam of your aerial and therefore likely to be poor.
If it points to Emley Moor then I suggest that you get the installer back to have a look at it.