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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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What do the map symbols mean?

 COM4/SDN multiplex,  COM4/SDN multiplex,  COM5/ArqivaA multiplex,  COM6/ArqivaB multiplex,  PSB1/BBCA multiplex,  PSB1/BBCA multiplex,  PSB2/Digital 3+4 multiplex,  PSB2/Digital 3+4 multiplex,  PSB3/BBCB/Freeview HD multiplex,  PSB3/BBCB/Freeview HD multiplex,  Saorview multiplex 1,  Saorview multiplex 1.

Before switchover

Click on a selection to see the use of the frequency use before switchover:

C21 C22 C23 C24 C25 C26 C27 C28 C29 C30 C31 C32 C33 C34 C35 C36 C37 C38 C39 C40 C41 C42 C43 C44 C45 C46 C47 C48 C49 C50 C51 C52 C53 C54 C55 C56 C57 C58 C59 C60 C61 C62 C63 C64 C65 C66 C67 C68

Switchover complete

Click on a selection to see the use of the frequency use when switchover is complete:

C21 C22 C23 C24 C25 C26 C27 C28 C29 C30 C31 C32 C33 C34 C35 C36 C37 C38 C39 C40 C41 C42 C43 C44 C45 C46 C47 C48 C49 C50 C51 C52 C53 C54 C55 C56 C57 C58 C59 C60 C61 C62 * * * * * *

Wednesday, 28 September 2011
Jim F

10:02 PM

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.

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Jim F's 141 posts GB flag
Thursday, 29 September 2011
ben rohomon
8:27 AM

I have a philips TV. Everytime I turn it on I have to retune. Should this be happening? Thanks, ben

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ben rohomon's 1 post GB flag

11:04 PM

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.

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Briantist's 38,915 posts GB flag
Friday, 30 September 2011
11:43 AM

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

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Vikki's 2 posts GB flag
Mike Dimmick

2:36 PM

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!)

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Mike Dimmick's 2,486 posts GB flag
Jim F

4:05 PM

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?

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Jim F's 141 posts GB flag
Peter Smith
6:57 PM

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.

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Peter Smith's 18 posts GB flag
Peter's: mapP's Freeview map terrainP's terrain plot wavesP's frequency data P's Freeview Detailed Coverage
Monday, 3 October 2011
10:03 AM

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?

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Christopher's 1 post GB flag
Christopher's: mapC's Freeview map terrainC's terrain plot wavesC's frequency data C's Freeview Detailed Coverage
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