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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 * * * * * *

Thursday, 12 April 2012

8:48 PM

Wendy Leak: Auto-tuning a box in the Grantham area can result in a mixture of Belmont and Waltham being picked up, and so you have to ensure that the three correct commercial transmitters have been picked up.

To do this select EPG 10 (ITV3) and then carry out a signal strength (condition) test whilst on it this done via the tuning menu, although its not so much the signal strength you are interested in but the transmitter channel number associated with the indication and which should be Ch29.

Once done go back out of the screen then select EPG 11 (Pick TV) and carry out exactly the same procedure as before, but this time you should see Ch56.

Repeat this entire procedure again after selecting EPG 12 (Yesterday) and in this case Ch57 should be seen.

Try this and give an update on results, as if these numbers arent seen then the box will have picked up Belmont, so you will require to manually tune them in to get Waltham.

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jb38's 7,179 posts GB flag

9:06 PM

Wendy Leak: Just a minor alteration to what I mentioned, to find out what the transmitter channel number is whilst on the any of the EPG numbers mentioned, do it by going into: Menu - settings - system - signal detection and you will see the actual transmitter channel on the right hand side of the bar.

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jb38's 7,179 posts GB flag
Tuesday, 17 April 2012
6:38 PM

I use 'normal' tv channels via an aerial when I am recording satellite channels (or record from 'normal' channels while watching something else on Sky). I had BBC1/2, ITV, C4 and C5 but recently I've lost BBC2. Does anyone know what channel I should be using (autotune doesn't find it) for BBC2 in Maidenhead (postcode SL6)? Thanks.

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Abby's 5 posts GB flag
Abby's: mapA's Freeview map terrainA's terrain plot wavesA's frequency data A's Freeview Detailed Coverage
Dave Lindsay

6:51 PM

Abby: By "normal" I assume you are referring to analogue as you only make mention of the five channels available in analogue.

The first stage of switchover at the Crystal Palace transmitter happened on 4th April when BBC Two analogue was switched off. Tonight the rest will go. So if your TV does not have a digital (Freeview) tuner built in, then you will need a separate set-top box.

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Dave Lindsay's 5,724 posts GB flag
Wednesday, 18 April 2012
6:21 PM

Hi, do you know if my flip down under counter kitchen TV which is analogue can be adapted or is it totally obsolete now, I suspect it is?

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Helen's 1 post GB flag
8:58 PM

I have a mikomi tv. No freebies. Can't seem to find any channels

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susan's 1 post GB flag

9:08 PM

susan: No very much to go on there... We would probably need to know your postcode and where your aerial is located.

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Briantist's 38,915 posts GB flag
Thursday, 19 April 2012

1:57 AM

Helen: Any TV can be adapted to receive digital signals. If the TV has a scart socket it is just a matter of connecting a freeview box to the TV with a scart lead. If this is not possible you will have to receive an analogue signal via the aerial socket on the TV. To supply the analogue signal it is necessary to use a Freeview box with a built in modulator (or a Sky box or a VCR which also have a modulator built in). Of course, if you decided to use a Sky box it would have to be connected to a satellite dish, whereas a Freeview box would use the aerial which used to provide your analogue channels.

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KMJ,Derby's 1,811 posts GB flag
Ed Stockings
9:40 AM

My aerial is pointed at Crystal Palace. After the 18th April re-tune, my PSB3 HD signal is STILL coming from Sandy Heath - like it did pre DSO (even though I'm pointing at CP). How can this be so, when Crystal has increased the signal to a whopping 200Kw? (I live in Buntingford, Herts.)

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Ed Stockings's 1 post GB flag
Ed's: mapE's Freeview map terrainE's terrain plot wavesE's frequency data E's Freeview Detailed Coverage

10:50 AM

Ed Stockings: There are several reasons why Sandy Heath could be selected in preference to CP for your PSB3 mux. Firstly, it is found first in the scan being on the lowest frequency. Secondly, depending on the type of aerial in use and local reception conditions, it could be the strongest signal arriving at your tuner. As you say, CP is 200kW but is 59km away, SH is 180kW at 25km, making SH the stronger signal before terrain and receiving aerial characteristics are taken into account. The Digital UK postcode checker predicts that reception is better from Sandy Heath at your location. If you require the Crystal Palace signal to be tuned in, rather than SH it will be necessary to do a manual tune on C30 after having either deleted the data for C21 or clearing the whole channel list. I assume that you selected "London" if you were presented with a choice of regions when tuning.

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KMJ,Derby's 1,811 posts GB flag
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