C21 (474.0MHz) after switchover
The map below shows all the transmitters in the UK using C21 once digtial switchover is complete. Please click the icon to see the coverage area, and double click for more information.
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mr b smithWednesday 24 August 2011 6:36PM
having trouble tuning my vcr panni to receive bbc2 . been successful tuning other 4 chans. i have a digital aerial into the vcr and then to my digital ready tv which has freeviev . Do you have any solutions?Mike DimmickWednesday 24 August 2011 7:19PM
mr b smith: Are you using the Waltham transmitter or one of its relays? This transmitter no longer transmits BBC Two analogue. Next Wednesday, all the remaining analogue channels from this transmitter will close down for good.
You can no longer tune in a VCR in the same way after switchover. You need to use a set-top box to decode the digital signal, and have the set-top box select the channel you want to record at the time you want the recording to start. Check your VCR's manual for how to get it to record from a SCART input. If it can't, or you can't work it out, you need a set-top box with an RF modulator, which you can then tune the VCR into.StuartSaturday 3 September 2011 8:48AM
Hi, i can tune to digital TV channels fine with my TV. But when i try with my new PVR it doesn't find any channels. I have tried with three different brand new PVR's so it could, but highly unlikely, be those. Has anybody experienced this?
thx
Stuartjb38Saturday 3 September 2011 11:27AM
Stuart: What you mention is strongly suggestive of either the method used to couple up the PVR, or that your signal is below a level that they can resolve a picture, although this unlikely if experienced on more than one device.
What method are you using to feed the aerial into your PVR's aerial socket?
JuliaWednesday 7 September 2011 8:10AM
Coventry Hi I live coventry and i retuned my freeview hd box this morning but i can no longer receive the hd channels please does anyone know what frequency the hd channels are on so i can manually tune.
thanksJim FWednesday 7 September 2011 5:57PM
Julia: Guess you've retuned for Sutton Coldfield's DSO1, but the HD signals haven't changed yet (still using UHF channel 34).
It will change to UHF channel 40 on the 21st September (DSO2).BellaFriday 9 September 2011 10:55AM
Clevedon Hi, I rescanned my box recently as I was missing a channel that had recently been added to Freeview. I can receive channels via the Mendip (West) or the Wenvoe (Wales).
I live in the Bristol area so want to use the Mendip transmitter, however my box picked up all the welsh channels including S4C and ITV Wales and Channel 4 has changed from number 4 to channel 805 for some reason! I followed information from the tvretune website and put in the channel frequencies it suggested to get it back to West tv but this only changed the BBC channels and not the ITV or Channel 4 settings. Anyone know the manual retune frequency to get it back to normal? Thanks :)natSaturday 10 September 2011 12:52AM
I had the four hd channels, from july i could not find them on my built in tuner,I live in worksop,nottinghamshire,I have tried retuning everytime since.The switchover date was 7th sep and was waiting ,but still no hd channels,help me please nat: It is a bit hard to help without knowing your full postcode. AndySaturday 10 September 2011 10:52PM
Does anyone know why i have to retune my tv everytime i turn it on. I am aware we have recently had the switch over. My main tv with sky is not a problem.
Any ideas?
Cheers Andy
Ps i live in west yorkshireJimjamsWednesday 14 September 2011 12:03PM
I have just moved house to Newcastle. When retuning my freeview HD box I no longer get any HD channels. Other than doing an automatic search I'm not sure what I can do to get them back. What can I do?Mike DimmickWednesday 14 September 2011 1:18PM
Jimjams: In the Tyne Tees region, only the Pontop Pike transmitter currently broadcasts an HD service, and it does so on C63.
If your aerial points to another transmitter, for example Fenham, HD services won't start until the second stage of switchover on 26 September 2012.
At the postcode you've given, Digital UK predict an excellent chance of reliable reception of all services from Pontop Pike. You will need to get the aerial pointed at that transmitter. If you currently get Multiplex D services reliably, you shouldn't need a new aerial, as it will already be a wideband. If not, it's probably a Group A - Pontop Pike transmits in Group C/D.Mike DimmickWednesday 14 September 2011 1:22PM
Jimjams: Sorry, I just noticed that you provided a pair of co-ordinates, not a postcode. You'll have to take the prediction with a pinch of salt, or provide a full postcode for a more accurate one.
If you're using a communal aerial you will have to check with the building's owner. If the aerial is definitely pointing to Pontop Pike, the distribution system might be channelised and not set up to amplify C63 at the moment. I assumed Fenham because this is the page for C21, and Fenham will use C21 for HD services after switchover.saraThursday 15 September 2011 11:14AM
Mike Dimmick: Can you tell me what signal booster I need to purchase for the freeview recorder which i have upstairs as i keep losing the signal. I have entered my postcode and it is the sand heath transmitter. I have looked at websites which talk alot of jargon. Can you help pleaseJane HoskinThursday 22 September 2011 7:10PM
Didcot I live in South Oxfordshire and retuned my 2 pvrs on 14 Sep. I no longer receive itv or channel 4. However I get ITV2.
what freqs are these so that I can manually set them?
thank youPeter SmithFriday 23 September 2011 4:46PM
Brighton I'd like some advice from anyone who understands the modulation techniques and error-correction provided by digital TV.
I'm trying to decide what we should do with the MATV system at Brighton Marina after the DSO next March. With the analogue signals we transpose frequencies (channels) so as not to get RF pickup on any badly shielded drop leads etc and this is normal practice. For the digital channels we currently transpose three of the muxes but not the other three (why? I don't know - it was introduced on a legacy system before I moved here).
My question is: with the high power digital transmitters, should we transpose frequencies to avoid any direct RF pickup clashing with the (slightly delayed) MATV data stream and clobbering the BER? Or is it completely unnecessary with digital transmissions?
The corollary of these questions poses another: does it do any harm to transpose channel frequencies for digital TV? If not, we might as well transpose all six since our head-end equipment is frequency agile. Can I assume that there is nothing RF-specific in the data streams?
I'd be very grateful for any informed opinion or advice.janeMonday 26 September 2011 10:00PM
Cambridge I have lost several stations in the recent sandy heath change, after tv requested retune. I think my ariel may be off. Is it just using a compass and find 231 Degree and reposition the ariel direction and then auto channelsVikkiWednesday 28 September 2011 1:02AM
Every time I turn my television on I have to retune my television, I performed the re-tuning when the switch over happened like I was instructed to, I also followed the adivce you gave someone in another post turning it off unplugging and retuneing ect but this has not solved it, my television runs through the main arial on the roof, once I retune my television everytime I turn it on it works perfectly until the next time I turn it off and on again, please help me! Its driving me scatty!! I'm in Leicester! Thanks Vikki Jim FWednesday 28 September 2011 10:02PM
Vikki: If you're using a Panasonic TV, they have a "new service message" option in the menu (sometimes in the picture menu, but more usually in the tuning menu - can take a bit of searching to find it).
If you set this to "off" rather than "on", your TV will come on without asking for a retune every time.I have a philips TV. Everytime I turn it on I have to retune. Should this be happening? Thanks, ben Peter Smith: As long as whatever you transpose to is not allocated (C60-C69 for 4G mobile, C31-C38 for new mulitplexes) and C21+, C22+, C24, C25, C27, C28, C30 and C31 in use at Rowridge you will be fine, there is nothing in the RF signal to prevent reception if it transposed - this is what happens at relays anyway. VikkiFriday 30 September 2011 11:43AM
Hello again my tv is a soundwave and I've attempted to change settings but it's still doing the same retune after every turn on! Any more ideas? Thanks Vikki Mike DimmickFriday 30 September 2011 2:36PM
Peter Smith: The reason for transposing on analogue is to avoid ghosting - due to the processing delays in the amplifier, the direct path from the transmitter can be shorter than the path via the cables. If field strengths are high enough, the direct path shows up as a ghost image.
Digital TV is designed to cope with delayed paths - indeed multiple paths are used deliberately in some areas, called a Single Frequency Network - and you should be fine without transposing.
Property managers should look at the appropriate section of the Digital UK website, at 
Property Managers - Home .
The transmissions *do* include descriptions of where to find other multiplexes belonging to the same transmitter or group, but very few boxes actually pay any attention to that information. (We wish they did, it would save all this retuning hassle!) Jim FFriday 30 September 2011 4:05PM
Vikki: Can't say I've ever heard of Soundwave - is it a "Freemans" own brand?
Many of these uncommon brands are Vestel products, but I've no idea if Soundwave is actually one of theirs.
Has the constant need to retune at switch on always been happening since new? If so, it sounds like a faulty TV.
I can't find any customer support information - does the user guide provide any contact details for guarantee purposes?
Peter SmithFriday 30 September 2011 6:57PM
Brighton Mike Dimmick and Briantist: Thank you both for your helpful replies. I think we will transpose, then. I'll also avoid C41, C44 and C47 (Brighton Central) and C50, C55 and C61 (Ovingdean) since there may just be coverage but it still leaves plenty of channels once analogue has gone.
Thanks again.Hi there,
My mother-in-law has done all the right things and updated to digital terrestrial, receiving broadcasts in Coleraine from the Limavady transmitter. Oddly, the reception if ITV 3 is very ropey... Actually, it's entity unwatchable. Looking at the signal strength on the set top box display, it seems to jump around between a full signal, and almost nothing at all.
I've looked at the digital switchover site, and it tells me that I should be able to receive itv 3 and all the others without any problems.
Her aerial has recently been upgraded, and the problem is the same on her tv in the kitchen (a tv with a built-in decoder), and her living room ( a Philps DTR220/05 set-top box).
Can anyone offer any suggestions as to what I can do/say? Mike DimmickMonday 3 October 2011 1:58PM
Christopher: If that's her postcode then yes, it is expected to give good results.
An aerial upgrade should not have been necessary if analogue signals were clear. It could have resulted in too much signal. Or, it could mean that signals from Divis are picked up strongly enough to be stored in preference to those from Limavady. It may be worth checking whether another version is present somewhere else in the programme guide that works better. If so, a manual retune should sort it out - see Digital Region Overlap for other suggestions.marcTuesday 4 October 2011 12:58PM
i have a philips tv and since digital switchover have been unable to retune my tv i cant watch tv is they a reason for this.marc: If you television set does not have a digital tuner, you will need to use a Freeview box. LiamFriday 7 October 2011 8:10PM
Worth Northing bbc B on ch 21+ from sandy heath is HD!
so DVB-T2 ONLY, no DVB-T
(took me ages to work out why I wasn't picking it up).Karl ThomasonMonday 10 October 2011 12:25PM
My mums TV needs retuning every time it is switched on. It finds no channels but when we hit the AV2 button they are all there. We can't get it to look at AV2 first.Karl Thomason: Sounds like you are using a Freeview box with the TV, and if this is the case then you will have to press "AV2" TinaTuesday 25 October 2011 6:50PM
Bury St. Edmunds Hi All,I live in west suffolk,since retuning have lost several channels,I need to buy awide band arial,but which one.??mark coombsTuesday 1 November 2011 7:06PM
Shaftesbury hi,
i have lost several chanels in since the weekend, film 4, dave, itv3 and 4 plus a few more. was working fine, is there a problem with stockland hill transmitter?Jamesh76Sunday 13 November 2011 3:33PM
I've just moved to a new house in Wimbledon. In the bedroom I have 2 aerial sockets labelled UHF and VHF. When I connect to my digital TV and complete the automatic tuning it won't pick up ITV, Channel 4 or Channel 5 on either analogue or digital sources.
Any suggestions?
Thank youJamesh76: If it's in the bedroom and there's a socket in another room, such as the lounge, then I'd take the TV to it and tune it in.
Can you ascertain as to whether there is a TV aerial connected to the socket in question? Perhaps trace where the cable runs and check that it is connected properly within the socket. paulWednesday 16 November 2011 8:41PM
is anyone getting problems with the bilisdale transmiter in the sedgefield aera is it weather GillSunday 20 November 2011 6:59PM
Anyone else in Cowes on the Isle of Wight lost all ITV channels in the last 24 hours?DusicaFriday 25 November 2011 5:36PM
I have a Phillips TV Model number 32PFL5522D/05 with an built in digital, since the switch over we have had to retune the tv every time we turn it on, I've tried to retune manually but I'm not able to do this. I have taken the advice of Briantist and switched off etc. but still no joy......any ideas??
I live in Somerset TA8 area.
Thankyou
jb38Friday 25 November 2011 9:25PM
Dusica: If my memory serves me correctly on that model you should be able to manually install channels under the "Installation / Service set up / Manual install service" menu.
However I would recommend that you carry out a factory reset first then followed by an auto-tune, this achieved by holding down the Menu button on the side (or top) of the TV (not remote) for about 5 seconds or so until a menu appears, then carry out steps 1-5 as though you were first installing the set.
JennyThursday 1 December 2011 7:36AM
I have a tesco technika tv with built in freeview and now have to re-tune it every time it's turned on. Any suggestions how I can solve this please?!
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My Freeview box has no EPG, is blank on FIVE, ITV3, ITV4, ITV2+1, has no sound or the channel line up is wrong | ukfree.tv - independent free digital TV advice ? 
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