Freeview: Divis (Northern Ireland) full-Freeview transmitter
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Freeview on the Divis transmitter

Google StreetviewGoogle mapBing mapGoogle Earth54.607,-6.009 or 54°36'24"N 6°0'34"WBT17 0NG

4G at 800MHz (at800) Freeview reception issues

When 800MHz 4G mobile broadband services start there will be 2 multiplexes in the higher risk range (C21-23, C30, C59-60): C23: SDN, C21: D3+4
See How do I know if the 4G broadband will overload my Freeview? and Full UK map of 4G issue areas for details.

Transmitter fauls and engineering works



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The symbol shows the location of the Divis transmitter which serves 440,000 homes.

Other maps:Divis DABDivis AM/FMDivis regionBBC Northern IrelandUTV

Radiation patterns

Radiation patterns withheld

Map key

The bright green areas shown where the signal from this transmitter is strong, dark green areas are poorer signals. Those parts shown in yellow may have interference on the same frequency from other masts.

Divis transmitter Freeview broadcasts

If you have any kind of Freeview fault, follow this Freeview reset procedure first.

Digital television services are broadcast on a multiplexes (or Mux) where many stations occupy a single broadcast frequency, as shown below. The rating shown takes in account the output power level and the various Freeview transmission modes and do not indicate an ongoing fault.

MuxEffective power level, aerial positionRatingModeWatts
PSB1
BBCA
 horizontal
Maximum64QAM 8K 2/3
24.1Mb/s
DVB-T MPEG2		100,000
Channel icons
1 BBC One Northern Ireland, 2 BBC Two Northern Ireland, 7 BBC Three, 9 BBC Four, 70 CBBC Channel, 71 CBeebies, 80 BBC News, 81 BBC Parliament, 301 301, plus 14 others
• as a digital multiplex transmitted on frequency C27 (522.0MHz) from 551m datum.
PSB2
D3+4
 horizontal
Maximum64QAM 8K 2/3
24.1Mb/s
DVB-T MPEG2		100,000
Channel icons
3 UTV (UTV), 4 Channel 4 NI ads, 5 Channel 5 NI ads, 6 ITV 2, 13 Channel 4+1 NI ads, 14 More 4, 28 E4, 33 UTV+1 (UTV), plus 1 others
• as a digital multiplex transmitted on frequency C21+ (474.2MHz) from 551m datum.
PSB3
BBCB
 horizontal
Maximum256QAM 32KE 2/3
40.2Mb/s
DVB-T2 MPEG4		100,000
Channel icons
101 BBC One HD Northern Ireland, 102 BBC Two HD (England), 103 UTV HD (UTV), 104 Channel 4 HD NI ads, plus 1 others
• as a digital multiplex transmitted on frequency C24 (498.0MHz) from 551m datum.
COM4
SDN
 horizontal
Above average64QAM 8K 3/4
27.1Mb/s
DVB-T MPEG2		50,000
Channel icons
10 ITV 3, 20 G.O.L.D. (not free), 25 Dave ja vu, 26 Home (not free), 27 ITV 2 +1, 30 5*, 31 5USA, 34 ESPN UK (not free), 38 Quest, 39 The Zone, 44 Channel 5 +1, 72 CITV, plus 22 others
• as a digital multiplex transmitted on frequency C23 (490.0MHz) from 551m datum.
COM5
ArqA
 horizontal
Above average64QAM 8K 3/4
27.1Mb/s
DVB-T MPEG2		50,000
Channel icons
 TV News,  TV Stars, 11 PICK TV, 12 Dave, 17 Really, 29 E4+1, 32 Movie Mix, 46 Challenge, 48 Food Network, 82 Sky News, 87 Community Channel, plus 9 others
• as a digital multiplex transmitted on frequency C26 (514.0MHz) from 528m datum.
COM6
ArqB
 horizontal
Above average64QAM 8K 3/4
27.1Mb/s
DVB-T MPEG2		50,000
Channel icons
15 Film 4, 18 4Music, 19 Yesterday, 21 VIVA, 24 ITV 4, 41 Sky Sports 1 (not free), 42 Sky Sports 2 (not free), 47 4seven, 83 Al Jazeera English, 85 RT English , plus 21 others
• as a digital multiplex transmitted on frequency C29 (538.0MHz) from 528m datum.


Regional news from the Divis transmitter


BBC Newsline 0.6m homes 2.5%
from Belfast BT2 8HQ, 1,044km northeast
to BBC Northern Ireland region - 46 masts.

UTV Live 0.6m homes 2.5%
from Belfast BT7 1EB, 1,044km northeast
to UTV region - 46 masts.

Self-help relays

Chapel FieldsTransposerCentral Belfast61 homes

How the transmission frequencies change over time

years1950s~851984-971997-981998-20122012-132013-182013-182019-
aerial groupVHFA KA KKA KA KA KA K
C1BBCtv
C21C4C4C4+D3+4+D3+4+D3+4BBCB
C22SDN
C23-ASDNSDNSDN
C24ITVITVITVBBCBBBCBBBCBD3+4
C25ArqA
C26-BArqAArqAArqA
C27BBC2BBC2BBC2BBCABBCABBCABBCA
C28ArqB
C291ArqBArqBArqB
C30local
600C31BBC1BBC1BBC1
C33-2com7
C34+Dcom8
C48C

orange background for multiplexes names moregreen background for transmission frequencieslilac background for power levels in watts800MHz band: 4G mobile to start in 2013700MHz band: possible 4G in 2019 more600MHz band: new or moved digital TV services more
Notes: + and - denote 166kHz offset; aerial group are shown as A B C/D E K W
Italics for analogue, digital switchover was Wednesdays 10th October and 24th October 2012.

  • Ofcom have projected that a local television service for Belfast including Lisburn could use an Interleaved Frequency on the Divis transmitter using C30
  • COM7, COM8 projected for 2013-16.

Comparison of old analogue and current digital signal levels

Analogue 1-4 500kW
com7, com8, BBCA, D3+4, BBCB(-7dB) 100kW
SDN, ARQA, ARQB(-10dB) 50kW
Mux 1*, Mux 2*, Mux A*, Mux B*(-23.4dB) 2.3kW
Mux C*(-24dB) 2kW
Mux D*(-24.9dB) 1.6kW

History of Channel 3 in the Divis transmitter area

Oct 1959-May 2006Ulster Television
May 2006-Dec 2014UTV plc
• Breakfast ◊ Weekends ♦ Friday night and weekends † Weekdays only. Divis was not an original Channel 3 VHF 405-line mast: the historical information shown is the details of the company responsible for the transmitter when it began transmitting Channel 3.


Your comments: most recent posts are at the bottom

firstFirst comments prevEarlier comments  ◊  Later commentsnext Latest commentslast

Your comments are always welcome. Please use the form below to add your thoughts or questions to this page. We will get back to you as soon as we can.

Transmitter engineering
Monday 9 July 2012 1:28PM
DIVIS transmitter - Freeview BBC Digital TV (Four, Cbeebies, Parliament, 3... Off Air; DSO related from 00:21 on 05 Jul to 05:21 on 05 Jul BBC Digital TV (One, Two, Three, CBBC, News) Off Air; DSO related from 01:08 on 05 Jul to 05:20 on 05 Jul Analogue BBC TWO Off Air; DSO related from 00:14 on 05 Jul to 05:10 on 05 Jul [BBC]
Anne
Friday 27 July 2012 7:51PM
I am having terrible problems with reception on all BBC channels on all my TV's.
Pixilation, total loss of picture.
It happened in May but was OK again for a while, now started again...any help appreciated.
John
Friday 27 July 2012 8:57PM
According to the Postcode checker at

www.digitaluk.co.uk link icon Postcode Checker - Detailed View

Black Mountain (very close to Divis) will transmit the special NI Mux on channel 37 at 2kW from 24 October 2012. This Mux carries RTE1, RTE2 and TG4 - however it is likely rights restrictions will prevent some sports coverage from being transmitted (BT808NU)
Mark Fletcher
Friday 27 July 2012 9:11PM Halifax
Anne.Unless you leave a full postcode or a nearby location as such,we cannot be of much help to you !
Anne
Saturday 28 July 2012 5:37PM Banbridge
Anne: Hi again - my postcode is BT32 5DU - Banbridge area

Thanks!
jb38
Saturday 28 July 2012 8:39PM
Anne: If you are referring to Freeview (analogue still being in operation) then you are predicted to receive BBC from the Divis transmitter as your local Leitrim relay station will not be in operation until October 10th as far as BBC is concerned.

However BBC from Divis is only transmitting on 2.3Kw and with it being at approximately 25 miles away irrespective of what the predictor might show I would expect problems such as you are experiencing until October 10th when Divis BBC changes to high powered operation @ 100Kw.
joe
Sunday 29 July 2012 10:01AM
waht make of box doi need tofereive and record irish and british tv stations
Anne
Sunday 29 July 2012 11:03AM Banbridge
jb38 - yes it's freeview. I have been in the house for 18months and all the BBC channels were fine until May this year. The other channels - ITV, Ch4, CH5 etc... are all fine - no problems at all.
jb38
Sunday 29 July 2012 11:17AM
Anne: Thanks for confirming that, but though as far as the problem is concerned there is work always going on at the station in preparation for high powered switchover in just over a couple of months and your difficulties could possibly be caused by this, the last notice to this effect made in July 9th and this certainly will not be the last.

Apart from that the other possible reasons for problems of your nature can be caused by seasonal atmospheric changes allowing distant stations on the same frequency to interfere with a local station, but I still feel that the aforementioned is more likely to be the cause.
Anne
Sunday 29 July 2012 11:53AM Banbridge
Thanks JB38 - It's very annoying - the sooner they switch over the better!!
Peter Henderson
Sunday 29 July 2012 1:17PM
Anne: Digital UK's postcode checker shows that your reception from Divis should be OK post DSO. The PSB (Freeview Lite) channels from the local Leitrim transmitter should also be very good.

No mention of the NI mux from Black Mountain, but you should get adequate Saorview reception from Clermont Cairn once it increases power on the 24th October.

Failing all that, Freesat would be the other option.

As you say, DSO can't come soon enough.
Malachy,
Monday 30 July 2012 1:05PM
Wi9ll Divis be broadcasting HD channels after changover ?

Some NI viewers are receiving these from Wales
Malachy, Newcastle
Dave Lindsay
Monday 30 July 2012 1:10PM
Malachy: Yes. HD services will be available from Divis starting on 24th October.
steve
Friday 3 August 2012 2:44PM Dungannon
Hi will the divis transmitter have a strength upgrade before the digital switchover as my picture quality is clicky and jumpy when windy or heavy rain.And as we all now thats 6 months of the year minimum here in n ireland.My equipment is new and good 75 per cent of channels work well at present.
Peter Henderson
Friday 3 August 2012 3:57PM
Steve: No.

I'm afraid you'll just have to put up with it for the next 11 weeks or so.

Either that or intall Freesat.
Peter Henderson
Wednesday 8 August 2012 10:55PM
Lost all BBC channels this evening, obviously due to lift conditions.

Roll on October when hopefully this will all be a thing of the past.
Noel
Saturday 11 August 2012 9:18PM
I'm not getting all the freeview channels , in particular itv4. I live in Dungannon northern ireland, BT71 7TJ
jb38
Saturday 11 August 2012 10:55PM
Noel: I cant really see your situation improving until October 24th when Divis (@ 32 miles) switches over to full power operation, as the multiplex that ITV4 uses is only transmitting on 1.6 Kw whereas it will 50kw as from the date mentioned, the reception in your area presently predicted as being non existent on some channels and poor on others, the ArqB mux that ITV4 uses being the only one of the five with a prediction in the green, this being good. (in theory anyway!).
Peter Henderson
Sunday 12 August 2012 3:26PM
Your other alternative is Freesat Noel.

However, according Digital UK's poscode checker you should heve good reception from Divis after the 24th October.

Many people still use Freesat even if they good Feeview reception.
Transmitter engineering
Thursday 23 August 2012 8:04PM
DIVIS transmitter - Analogue BBC TWO Weak Signal from 18:29 today [BBC]
Transmitter engineering
Thursday 23 August 2012 11:03PM
DIVIS transmitter - Analogue BBC TWO Weak Signal from 20:48 today to 20:52 today BBC TWO Weak Signal from 18:29 today to 20:32 today [BBC]
Transmitter engineering
Friday 24 August 2012 5:03AM
DIVIS transmitter - Analogue BBC ONE Weak Signal from 01:42 today BBC ONE Weak Signal from 00:50 today to 00:54 today BBC TWO Weak Signal from 01:42 today BBC TWO Weak Signal from 00:50 today to 00:54 today BBC TWO Weak Signal from 20:48 yesterday to 20:52 yesterday BBC TWO Weak Sign [BBC]
Transmitter engineering
Saturday 25 August 2012 5:01AM
DIVIS transmitter - Analogue BBC ONE Weak Signal from 01:42 yesterday BBC ONE Weak Signal from 00:50 yesterday to 00:54 yesterday BBC TWO Weak Signal from 01:42 yesterday BBC TWO Weak Signal from 00:50 yesterday to 00:54 yesterday BBC TWO Weak Signal from 20:48 on 23 Aug to 20:52 on [BBC]
Transmitter engineering
Sunday 26 August 2012 5:04AM
DIVIS transmitter - Analogue BBC ONE Weak Signal from 01:42 on 24 Aug BBC ONE Weak Signal from 00:50 on 24 Aug to 00:54 on 24 Aug BBC TWO Weak Signal from 01:42 on 24 Aug BBC TWO Weak Signal from 00:50 on 24 Aug to 00:54 on 24 Aug BBC TWO Weak Signal from 20:48 on 23 Aug to 20:52 on [BBC]
Transmitter engineering
Tuesday 28 August 2012 5:03AM
DIVIS transmitter - Analogue BBC ONE Weak Signal from 01:42 on 24 Aug BBC ONE Weak Signal from 00:50 on 24 Aug to 00:54 on 24 Aug BBC TWO Weak Signal from 01:42 on 24 Aug BBC TWO Weak Signal from 00:50 on 24 Aug to 00:54 on 24 Aug [BBC]
Transmitter engineering
Wednesday 29 August 2012 5:01AM
DIVIS transmitter - Analogue BBC ONE Weak Signal from 01:42 on 24 Aug BBC TWO Weak Signal from 01:42 on 24 Aug [BBC]
Transmitter engineering
Wednesday 29 August 2012 11:03AM
DIVIS transmitter - Analogue BBC ONE Weak Signal from 01:42 on 24 Aug BBC TWO Weak Signal from 10:33 today BBC TWO Weak Signal from 01:42 on 24 Aug to 10:33 today [BBC]
Transmitter engineering
Wednesday 29 August 2012 2:03PM
DIVIS transmitter - Analogue BBC ONE Weak Signal from 01:42 on 24 Aug BBC TWO Weak Signal from 12:33 today BBC TWO Weak Signal from 10:33 today to 12:30 today BBC TWO Weak Signal from 01:42 on 24 Aug to 10:33 today [BBC]
Transmitter engineering
Thursday 30 August 2012 5:03AM
DIVIS transmitter - Analogue BBC ONE Weak Signal from 01:42 on 24 Aug BBC TWO Weak Signal from 12:33 yesterday BBC TWO Weak Signal from 10:33 yesterday to 12:30 yesterday BBC TWO Weak Signal from 01:42 on 24 Aug to 10:33 yesterday [BBC]
Transmitter engineering
Thursday 30 August 2012 11:04PM
DIVIS transmitter - Analogue BBC ONE Weak Signal from 01:42 on 24 Aug BBC TWO Weak Signal from 12:33 yesterday to 18:11 today BBC TWO Weak Signal from 19:13 today BBC TWO Weak Signal from 10:33 yesterday to 12:30 yesterday BBC TWO Weak Signal from 01:42 on 24 Aug to 10:33 yesterday [BBC]
Transmitter engineering
Friday 31 August 2012 5:01AM
DIVIS transmitter - Analogue BBC ONE Weak Signal from 01:42 on 24 Aug BBC TWO Weak Signal from 12:33 on 29 Aug to 18:11 yesterday BBC TWO Weak Signal from 19:13 yesterday to 23:54 yesterday BBC TWO Weak Signal from 23:57 yesterday BBC TWO Weak Signal from 10:33 on 29 Aug to 12:30 on [BBC]
Transmitter engineering
Friday 31 August 2012 8:03AM
DIVIS transmitter - Analogue BBC ONE Weak Signal from 01:42 on 24 Aug BBC TWO Weak Signal from 12:33 on 29 Aug to 18:11 yesterday BBC TWO Weak Signal from 23:57 yesterday BBC TWO Weak Signal from 19:13 yesterday to 23:54 yesterday BBC TWO Weak Signal from 10:33 on 29 Aug to 12:30 on [BBC]
Transmitter engineering
Friday 31 August 2012 2:04PM
DIVIS transmitter - Analogue BBC ONE Weak Signal from 01:42 on 24 Aug BBC TWO Weak Signal from 19:13 yesterday to 23:54 yesterday BBC TWO Weak Signal from 23:57 yesterday BBC TWO Weak Signal from 12:33 on 29 Aug to 18:11 yesterday BBC TWO Weak Signal from 10:33 on 29 Aug to 12:30 on [BBC]
Transmitter engineering
Saturday 1 September 2012 5:01AM
DIVIS transmitter - Analogue BBC ONE Weak Signal from 01:42 on 24 Aug BBC TWO Weak Signal from 12:33 on 29 Aug to 18:11 on 30 Aug BBC TWO Weak Signal from 23:57 on 30 Aug BBC TWO Weak Signal from 19:13 on 30 Aug to 23:54 on 30 Aug BBC TWO Weak Signal from 10:33 on 29 Aug to 12:30 on [BBC]
Transmitter engineering
Saturday 1 September 2012 8:02AM
DIVIS transmitter - Analogue BBC ONE Weak Signal from 01:42 on 24 Aug BBC TWO Weak Signal from 19:13 on 30 Aug to 23:54 on 30 Aug BBC TWO Weak Signal from 23:57 on 30 Aug BBC TWO Weak Signal from 12:33 on 29 Aug to 18:11 on 30 Aug BBC TWO Weak Signal from 10:33 on 29 Aug to 12:30 on [BBC]
Transmitter engineering
Monday 3 September 2012 11:06AM
DIVIS transmitter - Analogue BBC ONE Weak Signal from 01:42 on 24 Aug BBC TWO Weak Signal from 19:13 on 30 Aug to 23:54 on 30 Aug BBC TWO Weak Signal from 12:33 on 29 Aug to 18:11 on 30 Aug BBC TWO Weak Signal from 23:57 on 30 Aug [BBC]
Transmitter engineering
Monday 3 September 2012 11:06PM
DIVIS transmitter - Analogue BBC ONE Weak Signal from 01:42 on 24 Aug BBC TWO Weak Signal from 23:57 on 30 Aug BBC TWO Weak Signal from 19:13 on 30 Aug to 23:54 on 30 Aug BBC TWO Weak Signal from 12:33 on 29 Aug to 18:11 on 30 Aug [BBC]
Transmitter engineering
Tuesday 4 September 2012 5:04AM
DIVIS transmitter - Analogue BBC ONE Weak Signal from 01:42 on 24 Aug BBC TWO Weak Signal from 23:57 on 30 Aug [BBC]
MARGARET MARTIN
Wednesday 5 September 2012 9:07PM Belfast
Hi we live at foot of divis and blackmountain bt127hf we had a digital aerial fitted but can only get a few channels ie yesterday film four the guy said that we will have to wait ontill black mountain starts relaying the signal is this right
Peter Henderson
Wednesday 5 September 2012 10:26PM
Margaret: No.

According to Digital UK's postcode chaecker you should be getting excellent reception from Divis at the moment, and after DSO. You should also be able to receive the NI mux from Black Mountain on October 24th.

Check to see which transmitter your aerial is currently receiving. If it's vertically polarised (i.e. the elements are up and down) then it's Black Mountain. If it's horizontally polarised then it's Divis.

Another way to check is to see if you're getting a good picture from Channel 5 analogue.

Personally, I'd seek the advice of a reputable aerial installer to see exactly what you need.
Dave Lindsay
Thursday 6 September 2012 12:37AM
MARGARET MARTIN: The answer to the question would depend on which transmitter the new aerial is directed at.

I should say that there is no such thing as a "digital aerial". Aerials are designed to pick-up particular frequencies. In some cases a different aerial is required for digital reception because the frequencies used are different to the former analogue.

As Peter Henderson says, Digital UK does predict "good" reception on all channels from Divis now. However, such predictors should always be taken with a pinch of salt as there are other factors not taken into account.


I had a look down your road on Streetview (photos taken August 2008) and most houses have two vertical aerials (or did then). They would appear to be pointing at Black Mountain and Clermont Carn (for RTÉ, TV3 and TG4). I spotted only one horizontal aerial on Divis.

This leads me to think that reception from Divis is difficult because there is no line of sight to the transmitter on the top of the hill. Furthermore, I should think that if you can get any digital from Divis now (bearing in mind that it's on much lower power than after switchover), then you're lucky!


It would appear that the only two transmitters north of the border that you can receive (if at all) are Divis and Black Mountain:

- If your new aerial is on Black Mountain then it will be vertical and pointing a bit anti-clockwise of west. This does not carry any digital (Freeview) now and after switchover will only carry Public Service channels (these being all BBC TV (standard definition and high definition), BBC radio stations, UTV, UTV+1, ITV2, Channel 4, Channel 4+1, Channel 4HD, E4, More4 and Channel 5 (I assume UTV HD if there is such a channel).

There should be no need to replace aerials on Black Mountain as the channels (frequencies) used after switchover are the same as those used for the current analogue. Only where viewers change transmitter (probably to Divis) to get the full service will a different aerial probably be required.

- If your new aerial is on Divis then it will be horizontal and pointing roughly north-west. Divis broadcast all Freeview channels after switchover, unlike Black Mountain which will be "Lite".


The fact that you can receive one of the multiplexes suggests that your new aerial is probably pointing at Divis. If not, then you must be receiving it with the aerial not pointing at the transmitter and with the aerial vertical when the signal is horizontal.

If your aerial is on Divis, then all you can do is try manually tuning missing channels (if your receiver allows). The rigger has installed the aerial based on the signals that can be received now. You will have to hope that the boost in power in October will be sufficient. I'm not sure whether you have recourse with him if it's not because he can't know for certain whether the aerial will work come October. For this reason it would perhaps have been pertinent to have the aerial changed after switchover.

By the way, the changeover will happen in two stages. On 10th October BBC standard definition services will go on full post-switchover power. These will take the place of BBC Two analogue. BBC One, UTV and Channel 4 will continue to be available on analogue.

Two weeks later on 24th October the other analogue channels will go and the other digital ones will go on full power.
Transmitter engineering
Monday 10 September 2012 1:55PM
DIVIS transmitter - Analogue BBC ONE Weak Signal from 01:42 on 24 Aug BBC TWO Weak Signal from 23:57 on 30 Aug [BBC] Over the next week Divis main transmitter: TV (analogue) working normally, TV (digital) working normally, Radio (analogue) Possible weak signal, Radio (digital) Possible weak signal. [DUK]
Transmitter engineering
Monday 17 September 2012 10:56AM
DIVIS transmitter - Analogue BBC ONE Weak Signal from 01:42 on 24 Aug BBC TWO Weak Signal from 23:57 on 30 Aug [BBC] Over the next week Divis main transmitter: TV (analogue) Liable to interruption, TV (digital) Liable to interruption, Radio (analogue) working normally, Radio (digital) working normally. [DUK]
Deirdre
Monday 17 September 2012 9:34PM
BT7 3EE
I am new to digital tv and recently set up a box. I have a small indoor aerial. Reception is okay sometimes but other times, it freezes/looses signal/picture goes to small frozen squares. Also should I be able to get film4? Sometimes, I can improve reception by disconnecting from mains. Advice I've read mentions interference from other appliances/mobile phones but this is not relevant in my case. Any help/advice very much appreciated.
B Moffatt
Tuesday 18 September 2012 9:46AM Belfast
Did a quick check on the Digital UK site with your post code and you should get Divis ok (it says 100%).

Go to dtg.org.uk

Type in your postcode (put a house name or number it makes it more accurate) and then in the page that opens click 'detailed view' (top right)you will get the transmitters muxes and their notional strengths.

I am in the Isle of Man west coast and we get it ok here (although you get some break-up (on some muxes incl Film 4) in unusual weather conditions.

I would not do any aerial work until after DSO (Oct 10th and 24th) because then the signal will be boosted dramatically.

If you still have probs after Oct 24th get the aerial man!

Cheers
jb38
Tuesday 18 September 2012 4:50PM
Deirdre: Although what B.Moffatt has said is perfectly correct regarding Oct 24th, however as far as your present reception is concerned the problems you are experiencing are not entirely unexpected when using an aerial of the type described even although you are indicated as being just slightly over 4 miles away from the station, as Film 4 is on the least powered transmitter of the group by only being on 1.6Kw whereas the other transmitters range from 2Kw / 2.3Kw.

By the way from October 24th the BBC / ITV / HD will be on 100Kw and with the three commercial channels being on 50Kw.
MEM
Wednesday 19 September 2012 12:44AM
I'm currently using an Aerial masthead amp to receive terrestrial broadcasts. I've heard that when the full digital signal is transmitted that these may actually have a negative impact on decent reception.

Can anyone confirm that and would I need to remove the amp. Thanks.
jb38
Wednesday 19 September 2012 7:01AM
MEM: Regarding the latter not necessarily so! although as you have not provided a post code or one from nearby (a shop etc) an assessment of the signal levels expected in your area cannot be made, but once switch over does takes place should they be found to be slightly too high, the symptoms of being exactly the same as the reverse situation when a signal being received is on the weak side, ie: various fashions of picture break etc, then you have the choice of either removing the amp or alternatively purchasing a simple attenuator costing about £4 or so which is placed in line with the TV or boxes aerial input socket, this in most cases completely curing the problem.

That said, when switch over takes place there are usually always a very small number of people whose signal is right over the top whereby its causing blocking in the TV or boxes tuner resulting in no picture being seen, the test of whether this is applying or not being to temporarily try a set top aerial, as if this works then the main aerials signal requires attenuating, but at this point in time I really wouldn't be too worried about this possible problem.

Transmitter engineering
Wednesday 19 September 2012 9:10AM
DIVIS transmitter - Analogue BBC ONE Weak Signal from 01:42 on 24 Aug BBC TWO Weak Signal from 23:57 on 30 Aug [BBC] is Transmitter works 20th September 2012: Engineering transmitter work will take place between 00:01hrs and 06:00hrs. TV services that will be disrupted: Analogue services - BBC2, UTV and Channel 4 will be subject to periods of shutdown. Digital services - Mux1, MuxA and MuxB will be subject to periods of shutdown. [DUK] Over the next week Divis main transmitter: TV (analogue) Liable to interruption, TV (digital) Liable to interruption, Radio (analogue) working normally, Radio (digital) working normally. [DUK]
Transmitter engineering
Thursday 20 September 2012 4:56AM
DIVIS transmitter - Analogue BBC ONE Weak Signal from 01:42 on 24 Aug BBC TWO Weak Signal from 23:57 on 30 Aug to 00:32 today [BBC] is Transmitter works 20th September 2012: Engineering transmitter work will take place between 00:01hrs and 06:00hrs. TV services that will be disrupted: Analogue services - BBC2, UTV and Channel 4 will be subject to periods of shutdown. Digital services - Mux1, MuxA and MuxB will be subject to periods of shutdown. [DUK] Over the next week Divis main transmitter: TV (analogue) Liable to interruption, TV (digital) Liable to interruption, Radio (analogue) working normally, Radio (digital) working normally. [DUK]
Transmitter engineering
Thursday 20 September 2012 7:55AM
DIVIS transmitter - Analogue BBC ONE Weak Signal from 01:42 on 24 Aug BBC TWO Weak Signal from 05:12 today BBC TWO Weak Signal from 23:57 on 30 Aug to 00:32 today [BBC] is Transmitter works 20th September 2012: Engineering transmitter work will take place between 00:01hrs and 06:00hrs. TV services that will be disrupted: Analogue services - BBC2, UTV and Channel 4 will be subject to periods of shutdown. Digital services - Mux1, MuxA and MuxB will be subject to periods of shutdown. [DUK] Over the next week Divis main transmitter: TV (analogue) Liable to interruption, TV (digital) Liable to interruption, Radio (analogue) working normally, Radio (digital) working normally. [DUK]
Transmitter engineering
Thursday 20 September 2012 10:56AM
DIVIS transmitter - Analogue BBC ONE Weak Signal from 01:42 on 24 Aug BBC TWO Weak Signal from 05:12 today BBC TWO Weak Signal from 23:57 on 30 Aug to 00:32 today [BBC] Over the next week Divis main transmitter: TV (analogue) Liable to interruption, TV (digital) Liable to interruption, Radio (analogue) working normally, Radio (digital) working normally. [DUK]



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