menuMENU    UK Free TV logo Maps



Click to see updates

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.

map is loading, please wait...

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, 14 September 2011
Mike Dimmick

1:18 PM

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.

link to this comment
Mike Dimmick's 2,486 posts GB
Mike Dimmick

1:22 PM

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.

link to this comment
Mike Dimmick's 2,486 posts GB
Thursday, 15 September 2011
11:14 AM

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 please

link to this comment
sara's 1 post GB
Thursday, 22 September 2011
5:36 PM

i have freesat looking for channels five usa and challenge tv.cant find them.anyone know the frequency so can get them cheers.

link to this comment
nick's 3 posts GB

5:54 PM

nick: There is no frequency for them, they are not free channels on satellite.

link to this comment
Briantist's 38,844 posts GB
Jane Hoskin
7:10 PM

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 you

link to this comment
Jane Hoskin's 1 post GB
Friday, 23 September 2011
Peter Smith
4:46 PM

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.

link to this comment
Peter Smith's 18 posts GB
Monday, 26 September 2011
10:00 PM

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 channels

link to this comment
jane's 1 post GB
Wednesday, 28 September 2011
1:02 AM

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

link to this comment
Vikki's 2 posts GB
Select more comments

Your comment please
Please post a question, answer or commentUK Free TV is here to help people. If you are rude or disrespectful all of your posts will be deleted and you will be banned.

Privacy policy: UK Free Privacy policy.