Freeview Light on the Eastbourne (East Sussex, England) transmitter

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4:32 PM

Peter: I should perhaps declare that my comments are made as a non-professional with an interest in the subject.

A Group A bandpass filter means that it allows through only Group A . A Group A bandstop filter (if there is such thing) allows through all except Group A channels.

There was (and maybe still is) a plan to sell off to for three new multiplexes. These would be likely to broadcast from the transmitting stations that carry the current three COMs. The Group B bandpass filter sold by ATV (and I assume all "Group B" BP filters) starts at 34 which could cause issues in the future.

I'm not sure whether this plan will come to fruition. It seems like the typical dogs dinner you get these days. Who knows, we could go back to having a single television channel in a few years time, so that most of the spectrum can be sold for 4G, , 6G etc. Let us that it won't be Murdoch that will be in charge!

You can get notch filters which are used to stop a single channel. You would obviously need three (or a triple one if there is such a thing) for the three channels used by South Tower. I have no idea on cost so can't say whether that's worthwhile.

F-connectors are generally used in places where the connections are generally perminant and not likely to be unplugged by users. So in a or outside (with suitable weatherproofing) it's good practice to use F connectors.

There may be a control on the to reduce its level which might. It's probably best to note where it was set originally just in case it goes pear-shaped.

I read your earlier postings which mentioned about a loft . If this is the same one, then could you move it to somewhere where it will still be able to pick-up from , but where it will get less from the direction of South Tower?

I re-affirm what I said about a Group A aerial being less suited to Heathfield and hence might need replacement. The colour system that is used denotes Group As with a red tip and Bs with a yellow tip. Widebands are black, although depending on its age, I wonder if it may, perhaps, not use any scheme.

I also wonder whether swapping it with a Group B would help a little to reducing the pick-up of (assuming that it is a Group A) as well as increasing sensitivity of Heathfield. Also, even though Group B officially goes down to it should still work quite well on 31 to 33 should they ever get used.

Peter
5:33 PM

Hi Dave the has a red tip.

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Peter
5:59 PM

Found a Blake DMX10B Very High Group B TV that I think would fit the bill as it says range: 35-53 (582 - 734MHz) (group B).

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Thursday, 14 June 2012

matt
12:17 AM
Eastbourne

why have we lost in , was better before change over. is this because there going to add more channels later or is that it

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12:25 AM

matt: All that were broadcasting before are broadcasting now. Without saying which are missing, how might we offer an explanation and a possible fix?

matt
8:16 AM
Eastbourne

matt: have lost quest yesterday some of the music itv2/3 dave viva and many more

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MF
11:51 AM
Eastbourne

The reason people in have lost some of the ie 23,26 30 is that are using these frequencies for the Com channels and Eastbourne is using them for the PSB channels.The digital from Eastbourne is far more robust than the old signal and travels further.I have been using hastings for the past 2 years and at changeover on 13th retuned and got all channels from hastings it was later that day when Eastbourne got switched on that I lost 23, 26,30. Brilliant planning have 2 transmitters with virtual line of sight of each other 17 miles apart using same channels for different . Having to move to and more cost!!!

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12:22 PM

MF: Based on what I've seen on here, some viewers using may be affected by others co- and may have to change transmitter.

I'm not an installer so the following are just my thoughts as technically-minded anorak on this subject.

If your aerial is a Group A one (bottom third of the band), then it will be unsuitable for as it is now Group B (middle third of the band).

If you are looking at DIYing or just wish to be informed, then I recommend that you look at www.aerialsandtv.com

There is a page on Heathfield, although the recommendations still say it is C/D, which is what it was before :

Heathfield Transmitter

You appear to have quite good line of sight (*with no local obstructions such as trees or buildings*):

Terrain between ( m a.g.l.) and (antenna m a.g.l.) - Optimising UK DTT Freeview and Radio aerial location

The transmitter is 14 miles away. I looked on Streetview and St 's House and neighbouring tall building looks as though they could pose a problem. It may vary from house to house what can be picked up and what can't.

looks out of the question.

The only other thing I can suggest is that you may be able to mount the aerial such that your house or some other object acts to block the from . This in so doing probably means putting the aerial somewhere where it is likely to pick up less signal from Hastings.

Mounted on one side of the house might. Or in the where you can construct some sort of shield with chicken wire and tin foil. I've no idea how effective this might be, particularly as other buildings may reflect the Eastbourne signals back towards the front of your aerial (depending on which way you face).

The COM use a less robust (less error correction) than the PSBs and this is so that they can cram in more , so they are going to be the first ones to go, even without the noise from Eastbourne.

It is worsened by the fact that they are both vertically polarised, although the stronger the signal the more it can be picked up by an aerial of opposite polarisation.

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12:33 PM

Matt: The answer to your question depends on which that you are using.

Based on the fact that you have lost Dave and Viva as well, then I gather that you are receiving from transmitter. The reason is due to the local transmitter (which doesn't carry these ) using the same as these services from Hastings.

If it is possible to receive from , then that is what you may have to do in order to receive the full complement of channels. Should you do this, then you should be aware that the SDN which carries ITV3, QVC and others is on low until 27th, so you may not be able to pick it up until then.

As I said to MF, Hastings uses Group A channels (bottom third of the band) and Heathfield uses Group B ones (middle third), so if your is a Group A one it will be unsuitable for Heathfield. A one should be OK though, although the older the aerial, the more likely it is to be a Group A one.

Friday, 15 June 2012

Kaz
6:55 AM

My mother can't get half her from either. They're supposed to be broadcasting 6;
BBCA on Ch.52
D3+4 on 49
BBCB on 47
SDN on 42
ArqA on 44
ArqB on 41

She gets 41, 49, and 52. Perfectly. The TV claims it's excellent . She also gets 40 - which seems to be coming from , and is a duplicate of Heathfield's channel 49 but with different regional programmes I believe.

She doesn't get 44, 47, or 48, although she'll never get HD with her current equipment but she's still missing 2 of the channels and she NEEDS them. She particularly wants Challenge and ITV3. Luckily she can currently get them on , but she's cancelling that soon and Challenge is not available on .

Can anyone give even the slightest clue as to what the problem might be? She's retuned twice and also tried to add them manually, all to no avail.