Full Freeview on the Rowridge (Isle Of Wight, England) transmitter
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The symbol shows the location of the Rowridge (Isle Of Wight, England) transmitter which serves 620,000 homes. 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.
Are there any planned engineering works or unexpected transmitter faults on the Rowridge (Isle Of Wight, England) mast?
Rowridge transmitter - Rowridge transmitter: Possible effect on TV reception week commencing 29/05/2023 Pixelation or flickering on some or all channels 
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Digital television services are broadcast on a multiplexes (or Mux) where many stations occupy a single broadcast frequency, as shown below.
64QAM 8K 3/4 27.1Mb/s DVB-T MPEG2
DTG-12 QSPK 8K 3/4 8.0Mb/s DVB-T MPEG2
H/V: aerial position (horizontal or vertical)
Which Freeview channels does the Rowridge transmitter broadcast?
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.
64QAM 8K 3/4 27.1Mb/s DVB-T MPEG2
DTG-12 QSPK 8K 3/4 8.0Mb/s DVB-T MPEG2
H/V: aerial position (horizontal or vertical)
Which BBC and ITV regional news can I watch from the Rowridge transmitter?
BBC South Today 1.3m homes 4.9%
from Southampton SO14 7PU, 26km north (354°)
to BBC South region - 39 masts.
ITV Meridian News 0.9m homes 3.6%
from Whiteley PO15 7AD, 24km north-northeast (20°)
to ITV Meridian (South Coast) region - 39 masts.
All of lunch, weekend and 50% evening news is shared with all of Meridian plus Oxford
Are there any self-help relays?
| Portsmouth Docks | Transposer | 2 km N city centre | 50 homes Estimate. Group of houses' |
How will the Rowridge (Isle Of Wight, England) transmission frequencies change over time?
| 1950s-80s | 1984-97 | 1997-98 | 1998-2012 | 2012-13 | 2 May 2018 | ||||
| VHF | A K T | A K T | A K T | A K T | W T | ||||
| C3 | BBCtvwaves | ||||||||
| C21 | C4waves | C4waves | C4waves | +BBCB | BBCB | ||||
| C22 | +ArqA | ArqA | |||||||
| C24 | BBC2waves | BBC2waves | BBC2waves | BBCA | BBCA | ||||
| C25 | SDN | SDN | |||||||
| C27 | ITVwaves | ITVwaves | ITVwaves | D3+4 | D3+4 | ||||
| C28 | ArqB | ArqB | |||||||
| C29 | LSO | ||||||||
| C31 | BBC1waves | BBC1waves | BBC1waves | com7 | |||||
| C37 | com8 | ||||||||
| C55tv_off | com7tv_off | ||||||||
| C56tv_off | COM8tv_off |
tv_off Being removed from Freeview (for 5G use) after November 2020 / June 2022 - more
Table shows multiplexes names see this article;
green background for transmission frequencies
Notes: + and - denote 166kHz offset; aerial group are shown as A B C/D E K W T
waves denotes analogue; digital switchover was 7 Mar 12 and 21 Mar 12.
How do the old analogue and currrent digital signal levels compare?
| Analogue 1-4 | 500kW | |
| PSB1||, PSB1≡, PSB2||, PSB2≡, PSB3||, PSB3≡ | (-4dB) 200kW | |
| COM4≡, COM4||, COM5≡, COM5||, COM6≡, COM6|| | (-10dB) 50kW | |
| com7≡ | (-13.1dB) 24.4kW | |
| Mux 1*, Mux 2*, Mux A*, Mux B*, Mux C*, Mux D* | (-14dB) 20kW | |
| com8≡ | (-14.3dB) 18.4kW | |
| LSO≡ | (-17dB) 10kW |
Local transmitter maps
Rowridge Freeview Rowridge DAB Rowridge TV region BBC South Meridian (South Coast micro region)Which companies have run the Channel 3 services in the Rowridge transmitter area
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Tuesday, 28 August 2012
RINA MILES....
If you can record BBC1-4 and view the recording but have issues with watching the channels in real time viewing then you issue is 100% the equipment you are using.
A recorder unit uses 2 tuners, 1 for viewing tv and 1 for recording, so at anytime one or both could have issues and not work properly.
The fact that you can view recordings points to you having an issue with the viewing tuner not the recording tuner and definately not the signal being received.
advice from Jays Cabling Services a Digital Approved Installer.
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J
jb388:54 PM
Rina Miles: It would also have been of assistance if you had provided your location as you could be absolutely anywhere in the UK or NI, this in the form of a post code or at least one from nearby as its impossible to assess the signal levels expected in your area nor the transmitter they are coming from without this info.
Please also provide info on the model of recorder you are using.
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Saturday, 8 September 2012
M
Malcolm Butler10:29 PM
We live in the Swanage area BH19/ BH20. We get our signal from Rowridge. We seem to get a very broken up picture on all stations when we get clear skies. This is usually about 9pm onwards.Back ok again next morning. This is consistant. We can try re-tuning and may get one or two stations but these easily drop out again very quickly. Lots of other people with same problem. This was happening before the switch over as well as after. Airiel is horizontal I think.
Please help. The better our weather the worse the picture (Late evenings only usually).
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M
Mark Fletcher11:26 PM
Halifax
Malcolm Butler.First of all i would consider repolarising your aerial from horizontal to vertical to counteract any single frequency interference issue that arises from Crystal Palace main transmitter which uses some exactly same multiplexes as that of Rowridge especially the COM multiplexes SDN,ArqA and ArqB all above are co-channel on frequencies 25,22 and 28 from both main masts.
Also while switching polarity check the tip of the aerial is red which denotes a group A aerial and the right aerial to use on all group A Rowridge transmitter especially in a poor/marginal signal area.
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Sunday, 9 September 2012
G
GLENN10:47 AM
Bognor Regis
Po22 9eg roof top aerial-Freeview built in to TV-since 6 sept unable to get itv2,itv4, pick TV, yesterday,qvc, film 4, 4music,Dave,really, viva, itv2 +1, e4 +1, etc-unable to receive broadcast on these channels. have reset TV checked cables etc
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D
David Sutton11:28 AM
Last night we found that many of our freeview channels were showing 'no signal'. From the descriptions on this website it looks as though we are suffering from single frequency interference, possible on several multiplexes. However, when we try to re-tune the TV, we pick up a load of French channels instead.
Any ideas what we can do about this?
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GLENN: Best to switch your aerial to vertical polarisation as the COM channels (those that you're having difficulty with) are 50kW horizontally and 200kW vertically. The Public Service channels are 200kW horizontally and 200kW vertically.
This will also help reduce the likelihood of interference from transmitters in France, which are horizontally polarised.
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David Sutton: Unless you've checked, then it could be that the French stations that you are receiving are not on the same channels/frequencies as the desired ones from Rowridge, and therefore aren't the ones that are compromising local reception. However, it does suggest that signals are carrying further than they normally do and so that could be the cause of the difficulty you are having.
It is possible that it is another transmitter that is interfering with the signals from Rowridge at your location. This doesn't mean that either will be receivable as there may be no overall "winner". Also, unlike with analogue, digital receivers will not start to show the picture carried on the offending signal (if/when it gets strong enough) because they are "looking" for the tuned signals.
So even if the interfering signals come in strong enough to wipe out reception from Rowridge *and* be watchable, your set would still show "no signal", *had* you left it tuned to Rowridge.
As suggested to Glenn, have your aerial switched for vertical polarisation. Never say never, but the transmitters in France that are likely to interfere are horizontally polarised.
Rowridge broadcasts horizontally and vertically, with the Commercial channels being on lower power using the former polarity and are equal to that of the Public Service channels on the latter.
This means that there are potentially two benefits to vertical polarisation.
You should not need to replace your aerial, unless it is defective of course. For some transmitters aerials used for former analogue need replacing to get the full Freeview service. With Rowridge the only thing that is needed is to switch to vertical polarisation.
If you do decide to get another aerial, then don't get a wideband. These are the types that DIY shops sell. These aren't the best for Rowridge. For more information (whether because you wish to install a new aerial or just wish to be informed before calling in a professional), see:
Rowridge Transmitter
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Monday, 10 September 2012
N
Norman Langridge5:40 PM
Can you say why C22, C25 & C28 from Rowridge Horizontal were not increased to 200kw?
I too will now have to alter my aerial to vertical to take advantage of the 200kw transmissions and hopefully avoid the black-out of reception as recently experienced with the 50kw channels.
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Norman Langridge: The COM channels (22, 25 and 28 from Rowridge) do not have as extensive coverage as the Public Service Broadcaster (PSB) ones. Over 1,000 small relay transmitters don't carry them as they are PSB-only. In some cases viewers will need to replace their aerials because the COM channels are broadcast from their chosen transmitter, but outside of the Group of their aerial (that is on UHF channels outside of those that their aerial is most sensitive).
Some transmitters that do carry the COMs radiate them at lower power than the PSBs and this is so that the COM channels can be "re-used" by another transmitter in closer proximity than would otherwise be possible (without the power restriction).
This is the reason for the lower power horizontal COMs signals from Rowridge. These three are used by two neighbouring main (high-power) transmitters: Stockland Hill to the west and Crystal Palace to the north east. These are horizontally polarised only.
The nearest that the three Rowridge PSB channels are used by main transmitters are Redruth to the west, Ridge Hill to the north west and Sandy Heath to the north east. These are further away than the two mentioned at the end of the previous paragraph.
Rowridge is unique in that it is the only main transmitter that broadcasts mixed polarities.
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