Freeview: Rowridge (Isle Of Wight, England) full-Freeview transmitter
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Freeview on the Rowridge (Isle Of Wight, England) transmitter

Google StreetviewGoogle mapBing mapGoogle Earth50.677,-1.369 or 50°40'35"N 1°22'7"WPO30 4HT

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): C22: ArqA, C21: BBCB
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 Rowridge transmitter which serves 620,000 homes.

Other maps:Rowridge DABRowridge AM/FMRowridge regionBBC SouthMeridian (South Coast micro region)

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.

Rowridge 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
 vertical
 horizontal
Maximum
Maximum		64QAM 8K 2/3
24.1Mb/s
DVB-T MPEG2		200,000
200,000
Channel icons
1 BBC One South, 2 BBC Two England, 7 BBC Three, 9 BBC Four, 70 CBBC Channel, 71 CBeebies, 80 BBC News, 81 BBC Parliament, 301 301, plus 12 others
• as a digital multiplex transmitted on frequency C24 (498.0MHz) from 320m datum.
PSB2
D3+4
 vertical
 horizontal
Maximum
Maximum		64QAM 8K 2/3
24.1Mb/s
DVB-T MPEG2		200,000
200,000
Channel icons
3 ITV (Meridian (South Coast micro region)), 4 Channel 4 South ads, 5 Channel 5 Part Network ads, 6 ITV 2, 13 Channel 4+1 South ads, 14 More 4, 28 E4, 33 ITV +1 (Meridian south coast),
• as a digital multiplex transmitted on frequency C27 (522.0MHz) from 320m datum.
PSB3
BBCB
 vertical
 horizontal
Maximum
Maximum		256QAM 32KE 2/3
40.2Mb/s
DVB-T2 MPEG4		200,000
200,000
Channel icons
101 BBC One HD (England no regional news), 102 BBC Two HD (England), 103 ITV HD (ITV Meridian Southampton), 104 Channel 4 HD South ads, plus 1 others
• as a digital multiplex transmitted on frequency C21+ (474.2MHz) from 320m datum.
COM4
SDN
 vertical
 horizontal
Maximum
Low		64QAM 8K 3/4
27.1Mb/s
DVB-T MPEG2		200,000
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 C25 (506.0MHz) from 299m datum.
COM5
ArqA
 vertical
 horizontal
Maximum
Low		64QAM 8K 3/4
27.1Mb/s
DVB-T MPEG2		200,000
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 C22+ (482.2MHz) from 302m datum.
COM6
ArqB
 vertical
 horizontal
Maximum
Low		64QAM 8K 3/4
27.1Mb/s
DVB-T MPEG2		200,000
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 C28 (530.0MHz) from 302m datum.


Regional news from the Rowridge transmitter


BBC South Today 1.3m homes 4.9%
from Southampton SO14 7PU, 26km north
to BBC South region - 39 masts.

ITV Meridian News 0.8m homes 3.2%
from Whiteley PO15 7AD, 24km north-northeast
to ITV Meridian (South Coast) region - 36 masts.

Self-help relays

Portsmouth DocksTransposer2 km N city centre50 homes Estimate. Group of houses'

How the transmission frequencies change over time

years1950s~851984-971997-981998-20122012-132013-182013-182019-
aerial groupVHFA KA KA KA KA KA KA K
C3BBCtv
C21C4C4C4+BBCB+BBCB+BBCBBBCB
C22+ArqA+ArqA+ArqASDN
C24BBC2BBC2BBC2BBCABBCABBCAD3+4
C25SDNSDNSDNArqA
C27ITVITVITVD3+4D3+4D3+4BBCA
C28+BArqBArqBArqBArqB
C30-Alocal
600C31BBC1BBC1BBC1com7
C32+2
C33+D
C341
C37+Ccom8

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 7th March and 21st March 2012.

  • Ofcom have projected that a local television service for Southampton including Eastleigh, Fareham, parts of Isle of Wight, parts of Portsmouth, Winchester could use an Interleaved Frequency on the Rowridge transmitter using C30
  • COM7, COM8 projected for 2013-16. COM7 and COM8 to operate as Midhurst,Rowridge VP, Salisbury SFN.
  • COM7, COM8 projected for 2013-16.

Comparison of old analogue and current digital signal levels

Analogue 1-4 500kW
COM4||, COM5||, COM6||, com7≡, com7||, com8||, com8≡, PSB1≡, PSB1||, PSB2≡, PSB2||, PSB3≡, PSB3||(-4dB) 200kW
COM4≡, COM5≡, COM6≡(-10dB) 50kW
Mux 1*, Mux 2*, Mux A*, Mux B*, Mux C*, Mux D*(-14dB) 20kW

History of Channel 3 in the Rowridge transmitter area

• Breakfast ◊ Weekends ♦ Friday night and weekends † Weekdays only. Rowridge 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.

jb38
Tuesday 10 April 2012 8:10PM
David Brinkman: Just to exclude something, I would like you to go into the "manual" tuning menu screen on your G20 (and only on) and using the up/down arrows on the large centre button select Rowridges BBC on Ch24, if nothing is shown on the strength / quality bars then "slowly" proceed to pull the aerial plug out "whilst observing the screen", as I would like you to note if when the plug is just about clear of the socket (and no more!) if the strength / quality bars start indicating.

Matter of fact if you slightly offset the plug alignment with the socket so that its touching the socket off centre that's about the correct position for this test.

If though nothing changes, then reinsert the aerial plug and inch the channel up to Ch57 and see if Poole's BBC1 comes in, another channel to test being Mendips BBC on Ch61, giving an update on results.

You will probably already know this, but there is no need to scan anything on the Panasonic because as you inch up the channels it acts like a super sensitive signal sniffer, as the tuner is excellent on that model.

Although it has to be said that you must be in a somewhat better location for reception than the predictor would suggest if pre-DSO1 you were able to receive a reasonably good signal, as you are presently forecast as only being able to have variable reception from the high powered ("H" polarity) PSB muxes and nothing at all from the commercials, although Rowridges "V" polarity PSB's are indicated in the green.
Kim V
Tuesday 10 April 2012 9:36PM
Kim V : It seems there is no straightforward solution. The thing that bothers me and doesn't make much sense is that the TV receives the same channels as the toputv box (in theory), the TV is fine but the box is unwatchable and they share the same roof aerial. I am not receiving downloads and can't record since switchover. Before the switchover the situation was reversed, the box received better than tv. Somehow I suspect a software issue, but topuptv is useless. I was wondering if another box would work better.
David Brinkman
Tuesday 10 April 2012 10:53PM Poole
JB38
Many thanks for coming in for my problem.
I have done the manual tuning and on 24 I get about 2 on the quality and 0 on strength. Pulling the aerial cable out so that it touches the socket off centre the quality dropped to 0.
I did check on 27 the commercial channel that I am receiving and got quality of 2 and strength of 2, on both 57 and 61 I got 0 but of course the aerial is pointing in the wrong direction.

Prior to the "improvement" following the switchover I think I was getting between 7 & 9 for most channels.
Transmitter engineering
Wednesday 11 April 2012 9:30AM
ROWRIDGE transmitter - Freeview HD Digital TV Off Air from 00:12 today to 01:32 today [BBC] Over the next week Rowridge main transmitter: TV (digital) working normally, Radio (analogue) working normally, Radio (digital) working normally. [DUK]
Transmitter engineering
Thursday 12 April 2012 4:30AM
ROWRIDGE transmitter - Freeview HD Digital TV Off Air from 00:12 yesterday to 01:32 yesterday [BBC] Over the next week Rowridge main transmitter: TV (digital) working normally, Radio (analogue) working normally, Radio (digital) working normally. [DUK]
David Brinkman
Thursday 12 April 2012 10:34AM Poole
JB38
Thanks for your information, I went up into the loft bypassed the signal amplifiers on both aerials and problem sorted.
PR MARTELL
Thursday 12 April 2012 1:12PM
since the change over, I have lost six or more praramms bbc programms plus 10 and a few more, of which I could receive before the swich over, and I keep retuining, but still I have trouble, what has gone wrong,?

PR Martell in southsea.
jb38
Thursday 12 April 2012 5:11PM
David Brinkman: Pleased to hear that you have sorted the "mystery" out insomuch that the problem was caused by the actual aerial amps themselves being overloaded. I would though be obliged if could let me know the brand of the devices involved, this to enable me to check on the circuitry / transistor type used in them.
jb38
Thursday 12 April 2012 9:17PM
PR MARTELL: As you havent provided your location (pref: post code or one from very near by) its impossible to verify this, but if its mainly the PSB channels thats missing then your TV or box could be getting overloaded by an excessively high level of signal so if you have any booster in line by pass it. If though you do not have a booster then for a test try a set top aerial or even a short piece (about 12") of copper wire pushed into the middle part of the aerial socket, and re-scanning (essential) after having fitted any of the mentioned as the programmes will not be in the receivers memory.
Transmitter engineering
Friday 13 April 2012 4:30AM
ROWRIDGE transmitter - Freeview HD Digital TV Off Air from 00:12 on 11 Apr to 01:32 on 11 Apr [BBC] Over the next week Rowridge main transmitter: TV (digital) working normally, Radio (analogue) working normally, Radio (digital) working normally. [DUK]
Pauline
Friday 13 April 2012 2:50PM Waterlooville
Hi I have a sky freeeview HD box and I have now lost all my channels and signal and I am not very tecky and have checked the cables, unplugged etc what am i doing wrong?????? I have been without a TV now since Wednesday when it just went off. PLEASE PLEASE any help will be welcomed...
Mike Dimmick
Friday 13 April 2012 3:29PM
Pauline: Do you mean Sky, through a satellite dish, or Freeview, through an aerial? When selecting BBC One, do you just press button 1 (which would be Freeview) or 101 (Sky, Freesat or cable)?

In either case the most likely explanation is a broken or disconnected cable, or a misaligned dish (for Sky) or aerial (for Freeview).

Sometimes the Sky box does need resetting: see www.ukfree.tv link icon What can I do when my Sky Digibox says 'No Signal' or 'Technical fault'? | ukfree.tv - independent free digital TV advice for how to do this.
dave
Sunday 15 April 2012 6:52PM Southampton
I have a discrepancy in freeveiw channel reception. dvd box is fine. But when tv is used without dvd connexion poor signal and different channels are received.
The strange thing is they are both on the same ariel.
Have tried retuning both separatly . No diff
The ariel is old analoge in the loft. Till retune no problems.
???
john
Sunday 15 April 2012 7:52PM
i live in glasgow east end i've had no tv freevies reception all day, was ok last night about midnight when i went to bed, woke up about half 9 this morning and nothing not a single tv or radio channel. Tried retuning but no joy, any probs with the transmitter??
Briantist
Sunday 15 April 2012 7:53PM
john: Please see www.ukfree.tv link icon Freeview reception has changed? | ukfree.tv - independent free digital TV advice . I can't say what your transmitter would be as you didn't supply a postcode.
Transmitter engineering
Monday 16 April 2012 3:32PM
ROWRIDGE transmitter - Over the next week Rowridge main transmitter: TV (digital) Liable to interruption, Radio (analogue) working normally, Radio (digital) working normally. [DUK]
topcatsss
Wednesday 18 April 2012 1:23AM Chichester
Hmm ok so i think finally they have finished messing with the digital TV stream.
At 1:30am in the morning after a retune i can not get all the channels i used to get.
PS nice weather outside
Derek Green
Wednesday 18 April 2012 8:43AM
Up until today (yes I have retuned today from factory resets!) I got good signal on most channels, even all the HD ones. This morning 08.40am all BBC TV and Radio channels are breaking up badly on two different Freeview devices. The same applies to most commercial channels. Odd. Is Rowridge at low transmitter power temporarily after final step? If so, hopefully they will boost up to full power.

Anyone else got problems?
Phil K
Wednesday 18 April 2012 10:07AM Poole
Signal level seems as usual here (Holton Heath, horizontal aerial), but we've lost SDN/COM4. Have tried retuning, including manually on C25. Anyone else having problems?
Pete W
Wednesday 18 April 2012 10:36AM
Just done the retune for Rowridge. Lost programs associated with Com5 on internal aerial. Move the aerial to vertical and hey presto all signals coming in with no variation as people move in front of the aerial. Excellent.
No problems with loft aerial but will move to vertical soon.
PO11 area
Sean Marshall
Wednesday 18 April 2012 10:39AM Halifax
My channels appear to be OK so far after the final change, but I have got less than full signal on some of the COM channels. Here's my enquiry I sent to Digital UK on 7th April:

I note from your reception predictor that my probability of receiving the 6 muxes are currently 99,99,99,99,77,84 (and working well). But after the re-tune on April 18th this will reduce to 99,99,99,21,20,21. Are these figures correct? If so could you please explain why the figures are so much lower after the re-tune? Will I need to have my aerial turned to VP orientation to reliably receive the COM muxes after April 18th? Even with VP, your site still predicts lower than now. Thanks.

And their reply:

Thank you for your email dated 7 April regarding Switchover in Meridian.

Your postcode is PO8 9xx which means you are likely to receive your TV signal from the Rowridge transmitter which switched on 21 March 2012.

Our postcode checker predicts that there may be a less reliable digital signal for your postcode after the retune event because in some cases this can be due to interference from nearby transmitters, both in the UK and in neighbouring countries.

The mux reception on 18 April is only a prediction of variable reception on those three muxes. I would therefore strongly recommend you wait until after switchover to see if your home will actually be affected to avoid having unnecessary work done, i.e. realignment for Rowridge VP transmitter.

You would need to consult a reputable local aerial installer for advice on this option and that of course might incur a cost. If this is your preferred route, I would recommend that you use a Registered Digital Installer (RDI) identified by the 'digital tick' logo. To find a RDI in your area please visit: www.rdi-lb.co.uk.

If you have any further enquiries regarding the digital switchover please visit our website at www.digitaluk.co.uk or call us on 08456 50 50 50.

...So it seems to me that they've kept the power levels the same, but expect interference from France on the new channels. Now we see why they felt the need to introduce VP - they've given the clear channels to London!
Briantist
Wednesday 18 April 2012 10:40AM
Pete W: That is very interesting to hear.
Sean Marshall
Wednesday 18 April 2012 10:45AM Halifax
...and to avoid any confusion I'm not in Halifax as it states at the top of my previous post.
Geoff Smith
Wednesday 18 April 2012 10:47AM
Derek Green: Hi Derek...I'm way across the country from you in Haslemere, Surrey. I seem to have the same problems apart from Channel 27..ITV. I've lost 21,24 and the new 3 allocated COMS. The signals have been coming and going all morning since about 7:30 on all 5 freeview devices in my house. The signal strength is either 0 or 87%.(And in a few instances "Too strong" on channel 22) I am assuming that all is not going to plan at Rowridge. It's really frustrating that the weather is so bad today as well..difficult to assess whether it's Rowridge, weather or what!
Derek Green
Wednesday 18 April 2012 11:14AM
Geoff Smith,

Phew. At least one of you is having problems! It does make you go running around trying to fault find, probably pointlessly? I have rechecked all my connections but all 4 Freeview devices over the house are getting poorer signal strength this morning, certainly lots of digital breakups. I hope you are right about Rowridge having some problems! I am already on vertical polarisation and was getting good signal strength without the need any of the 3 boosters I had in circuit before 21 March. And virtually no digital breakups until this morning.

I am wondering whether it is co-channel interference yet again. I had hoped with the increase in power to 200kW on all vertical polarised multiplexes that this would be really minimised but perhaps not? I must go and have have look where the nearest high pressure zone is..... off to have a look on Met Office site!!!
Dave Lindsay
Wednesday 18 April 2012 11:18AM
Geoff Smith: If you are attempting to receive Rowridge in Haslemere then its COMs are co-channels with Haslemere's PSBs which are also co-channel with Crystal Palace's COMs.

Rowridge now broadcasts vertically as well as horizontally. 200kW for PSBs vertically and horizonatally. 50kW for COMs horizontally and 200kW for COMs vertically.
Dave Lindsay
Wednesday 18 April 2012 11:35AM
Phil K: Stockland Hill's COMs are co-channel with those of Rowridge. Last night they had a power increase so you could be getting interference from them. You may have to switch your aerial to vertical to reduce the chance of such interference as well as picking up stronger COM signals from Rowridge.
Geoff Smith
Wednesday 18 April 2012 11:57AM
Dave Lindsay: Hi Dave...appreciate what you say but geographically we are 1 and a half miles south of Haslemere and our aerial (A type horizontal) is pointed south west directly towards Rowridge. There is no chance that we receive any transmission from the Haslemere relay which is directly North East of us and obscured by Blackdown Hill.
Suffice to say that since I replied to Derek Green all of our channels are up and running again. However we do seem to be a slave of weather conditions and will probably have the aerial vertically positioned to get full advantage of the new power 200kw COMs increase. Thanks for your advice..be blooming glad when all these changes are over and done with!
Geoff Smith
Wednesday 18 April 2012 12:01PM
Derek Green: Hi again Derek....all channels seem to have stabilised and are back up and running. I'd be interested to know whether yours have improved as well?

Cheers

Geoff
Dave Lindsay
Wednesday 18 April 2012 12:14PM
Sean Marshall: The signal strength is not the main factor with digital reception; it is quality. So long as the strength is great enough to produce give "good" reliable quality, then I suggest that you do nothing with your aerial if you will have to pay someone to make any changes.

Directional aerials by their nature are more sensitive in one direction and less so in others. So if the interfering signal is coming from a direction at which your aerial is least sensitive then it will produce less interference to your receiver than had it been from a direction where your aerial is more sensitive.

So don't read the Tradeview predictor as being what you will actually get. It is simply a guide.

If your aerial happens to be in a spot where it picks up no signal from Crystal Palace then it will endure less interference than had it been in a location where it got a little. Such a difference could be metres.

Clearly the only way to give a definitive answer is to measure the signal levels on-site. On the basis that this will cost and that you already have an aerial, I suggest, just as the response from Digital UK says, that you leave it and see.

Should you find that you have an issue, then you are now briefed on the possible cause and possible solution.
Dave Lindsay
Wednesday 18 April 2012 12:22PM
Geoff Smith: Good to hear that you have good reception now.
Peter Ball
Wednesday 18 April 2012 3:21PM
Ref Rowridge transmissions. Can you say if the horizontal SDN, COM 5 and 6 muxes are to remain at 50KW or will they be eventually be upgraded to 200KW. I ask because CH22 and 28 are at the edges of gain of my indoor antenna and have marginal signals since the switch this morning (18th April).
I may have to go to vertical polarisation.
Thankyou
Briantist
Wednesday 18 April 2012 4:19PM
Peter Ball: I can confirm that all of the multiplexes are now at their final levels.

Indoor aerials are not really suitable for reliable Freeview reception. However, you can probably be sure that if you nearly have reception with one, that a rooftop aerial would provide totally stable reception.
Derek Green
Wednesday 18 April 2012 6:23PM
Geoff Smith,

I have just had the oddest experience. The signal strength was definitely down this morning, but I discovered that the 4 outlet distribution amp in my loft (which is over 15 years old!) had finally gone weird! The signal strength was 90% but the quality on all channels was varying wildly between 40 and 100%. I have just replaced it with a new one from B & Q (£14.99 for a complete aerial distribution kit with all sorts of cables, plugs etc that I did not need!!! but it was the cheapest option) and all the issues have gone away. There are still occasional digital glitches but very minor ones which I am assuming is due to the weather.... But I am back and running with 113 channels including all 4 HD ones.
Idris
Wednesday 18 April 2012 11:11PM
Hi
Idris from Weymouth logging in.
All channels bar 22 seem ok, 22 poor signal strength & very poor quality of signal.
Picture on Sky News & Dave break up.
Will try to fine tune the aerial direction over the weekend, otherwise all seems to be ok.
Idris
Thursday 19 April 2012 5:44PM Weymouth
Hi again
Wife said she was watching Really this afternoon which is on channel 22 & a prompt to retune came up she did & now all seems to be ok.
Paul H
Saturday 21 April 2012 9:40AM
Film4 has disappeared from Rowridge on both my internal TV tuner and my Humax over the past 24 hours. Says channel 28 " no signal" Is it just me ?
Dave Lindsay
Saturday 21 April 2012 11:58AM
Paul H: See www.digitaluk.co.uk link icon 
Digital UK - Planned Engineering Works

Rowridge digital TV is presently "liable to interruption".
Judy Clews
Saturday 21 April 2012 4:45PM Wareham
my postcode is bh20 5au my transmitter is rowridge, from 18/04/12 I have lost several channels that I previously had itv3 ETC. I have done a retune several times but no luck, is there a problem I miss my channels
Dave Lindsay
Saturday 21 April 2012 5:10PM
Judy Clews: On 18th April these services changed channel/frequency and their transmission powers were increased. However, the Stockland Hill transmitter uses the same three channels/frequencies and on that date they also went up. Coincidence? Perhaps the Stockland signals are acting to make the Rowridge ones unusable.

Since 18th April, Rowridge has been transmitting all channels horizontally and vertically. Before switchover it was horizontally only.

You may benefit from switching your aerial to vertical polarisation. The reason I say this is probably two-fold:

1. If the problem you have is interference from Stockland Hill, then it transmits horizontally only. So having the aerial at right-angles to that signal will help reduce the level of interferance.

2. The transmission power of the Commercial channels (ITV3, Pick TV, Yesterday, Film4, Dave etc) from Rowridge is lower horizontally then vertically.


Thus the combination of increased rejection of Stockland's signals by mounting the aerial vertically and increased signal strength should improve matters for you.

If it doesn't improve matters enough to allow reception of these channels, then a change of aerial may help.
Dave Lindsay
Saturday 21 April 2012 5:24PM
Judy Clews: If your TV has a manual tune function, then try using it to restore the missing channels.

See "Final switchover configuration" on this page:

www.ukfree.tv link icon Freeview multiplexes | ukfree.tv - independent free digital TV advice

Work out which one(s) you are missing and then attempt manual tuning for each.

For Rowridge they are:

SDN (ITV3 etc) = C25
ArqA (Pick TV etc) = C22
ArqB (Yesterday etc) = C28
MJ
Saturday 21 April 2012 8:11PM
I was receiving HD signals perfectly well this afternoon from Rowridge on channel 21 with a new tuner. Since then I have lost the signal and retuning doesn't help. Is anyone else having a problem?
Dave Lindsay
Saturday 21 April 2012 8:16PM
MJ: Digital UK reports that Rowridge digital TV is "liable to interruption":

www.digitaluk.co.uk link icon 
Digital UK - Planned Engineering Works
Ray
Monday 23 April 2012 4:13PM Andover
Post Code SP11 9QD

The aerial points to Rowridge (Hannington signal is not so good) and its horizontal.

Channels on 200,000w mux are fine, so are those on SDN.

ArqA and ArqB channels vary from poor to unwatchable.

My guess is mux need to send more power. Is there a chance that the wick can be turned up?
Dave Lindsay
Monday 23 April 2012 4:20PM
Ray: The power of the Commercial (COM) multiplexes, SDN, ArqA and ArqB are 50kW horizontal and 200kW vertical. The Public Service ones are 200kW horizontally and vertically.

Your issue isn't forced to be weak signal. It could be interference from another transmitter such as Crystal Palace which is co-channel for the COMs. The difference is that Crystal Palace only transmits horizontally, so you will probably be best advised to switch your aerial to vertical.
MC48
Monday 23 April 2012 4:53PM
I wish they would do away with the nag screen on ITV1 etc to retune if missing channels.
I Pike
Monday 23 April 2012 9:55PM
Hi I have done last retune 18th April. Service has always been good on all channels but now can hardly get yesterday also itv 3 not good. Very disapointed as led to believe service would be much better after new transmitter.
Dave Lindsay
Monday 23 April 2012 10:39PM
I Pike: Ensure that your receiver is tuned to Rowridge for these services. Go to ITV3 and bring up the signal strength screen and check that it is tuned to UHF channel 25. Likewise for Yesterday it is C28. Pick TV is C22.

If you are tuned to Rowridge, then you may benefit from switching your aerial to vertical.

The Public Service channels (BBC, ITV1, Channel 4, Channel 5 etc) are at a transmission power of 200kW horizontally and vertically. The Commercial ones (ITV3, Pick TV, Yesterday, Film 4, Dave etc) are 50kW horizontally and 200kW vertically.
Dave Lindsay
Monday 23 April 2012 10:42PM
I Pike: I should also point out that the three Commercial channels use the same frequencies as Stockland Hill and Crystal Palace, so depending on your location they could be the cause of interference.

On Wednesday when the Rowridge Commercial channels changed channels, the power of Stockland Hill went up, and Crystal Palace's came on air at its switchover.

Without knowledge of your location, I can't know how likely this might be that it is interference.

Switching your aerial to vertical should help with that if it is. It will be two-fold:

1. A stronger signal.

2. Greater rejection of the unwanted signals as they are horizontal only.
Ray
Tuesday 24 April 2012 10:01AM Andover
Dave:

thank you for your reply.

Would you think it is possible that whilst there may be interference on ArqA and ArqB from Crystal Palace, there is none on SDN?
Dave Lindsay
Tuesday 24 April 2012 11:08AM
Ray: Different frequencies travel differently. So in the days of analogue if you remember ever siting an aerial, there were places where one channel was good but another wasn't so. This is because different frequencies get bounced around, refracted etc in differently, so at the point of reception they may not all be of equal strength.
PeterC
Tuesday 24 April 2012 4:27PM Waterlooville
I have to share 'Ray's concern. I am also in location PO80PZ. Since the change over I have intermittent connections on all my TV's. I have also retuned all sets several times with no improvements. On turn-on I always get 'no signal' before the TV finally finds the stations and several times during viewing intermittent viewing. I have a DVT-Finder ( Labgear) which I have used occational. I have observed that dB reading has reduced from 80 to 70 strength.
It would be expensive to replace or reposition the existing aerial without any guarantee it would work.
This would appear to be a location problem. What is your solution?



Please post a question, answer or commentIf you have Freeview reception problems before posting a question your must first do this Freeview reset procedure then see: Freeview reception has changed, Single frequency interference, and Freeview intermittent interference.

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