Full Freeview on the Dover (Kent, England) transmitter

_{sentiment_very_satisfied}Platinum

12:33 AM

Andrew Walter: The BBC from on are as they will be after 27th. That is, they have "switched". Obviously check that they are coming in on C50 and not another channel which would indicate that your is tuned elsewhere which would therefore be the problem.

At under 3 miles from the 80kW your receiver could be being overwhelmed by the strength of the . Therefore this could get worse when all the other channels go up to full power.

You may need to get yourself an attenuator:

ukfree.tv - independent free digital TV advice

Gordon Ormston
8:48 PM

Hi
Before the switch over in the area yesterday I had no problems whatsoever in receiving all the usual channels on my Sony TV. Following the switch over I am having problems with all BBC channels. ITV and most of the other channels are still perfect. I have re-tuned numberous times to no avail. The problem is constant image pixellation, broken sound and frequent loss of tuning. I have spoken three times to 'digitaluk' and despite their best efforts they have no idea why this is happening. Prior to switch over no problems receiving digital signals and nothing my end has changed can you? Tried fitting an inline , this improved the tuning issue on the BBC channels but not the pixellation and sound problems.

Gordon Ormston's 7 posts GB flag

david

_{sentiment_satisfied}Bronze

9:09 PM

hello Gordon Ormston have you rescaned by doing first . as for using a i would remove it as you wont need it as the signel was boost yesterday. also see if the tv is tuned to ch50 that bbc A is using or put it in your self.

david's 36 posts GB flag

_{sentiment_very_satisfied}Platinum

9:30 PM

Gordon Ormston: Confirm that it is tuned to .

If that doesn't fix it, then I would suspect that the level being fed into it is now too high and is in need of attenuation.

See Freeview signals: too much of a good thing is bad for you | ukfree.tv - independent free digital TV advice

Gordon Ormston
9:45 PM

Hi David

Thanks for your comments, re-tuned using all options but whilst all ITV are still OK the BBC channels are breaking up. 'Loss of tuning' was a bit misleading, I meant loss of and BBC tuned in correctly to ch50. 'digitaluk' suggested the too strong as situated within 5km from . If thats the case I can't be the only person affected and begs the question was this not taken into account during the planning stage?

Gordon Ormston's 7 posts GB flag

Gordon Ormston
10:29 PM

Hi Dave

Thanks for your reply. Have double checked and BBC definitely tuned into ch50. Am I right in thinking that on the final changeover on the 27th the same problem could occur with the other . Please explain what's involved in attenuation.

Gordon Ormston's 7 posts GB flag

_{sentiment_very_satisfied}Platinum

11:41 PM

Gordon Ormston: The high post- signals are such so as to provide equivalent coverage to that of the former analogue (at least for BBC, ITV1, C4, C5 and other Public Service ).

Due to fewer frequencies being available, transmission powers had to be kept down so that they could be re-used by transmitters within a closer proximity than they otherwise would have been. Also, power was low so as not to interfere with analogue transmissions already on air which were co-channel.

In essence, it was a quasi-national ; i.e. there were gaps in coverage which is why we have a "switchover" and not just a "switch-off" (of analogue).

I assume that they covered as much of the population as they could with this network giving greater preference to those transmitters with more viewers (the assumed objective being to cover as many as possible). In any case, international clearance would have had to be granted with any signals along the coast being more likely to affect the continent.

So there was probably little that could be done if the pre-switchover service was to be crammed in.

-----

See ukfree.tv - independent free digital TV advice

A variable attenuator such as that shown on that page will cost £3 or £4 from online sources such as eBay. These are usually 20dB ones.

As an example (others are available!) I found this one:

VARIABLE ATTENUATOR TV SIGNAL REDUCER 20dB 3 5 6 9 10 12 15 18 DIGITAL FREEVIEW | eBay

Friday, 15 June 2012

_{sentiment_very_satisfied}Platinum

12:11 AM

Gordon Ormston: Yes, come the 27th it could happen to other .

Andrew Walter
7:28 AM
Dover

It seems that myself and Gordon have the same problem. I already had a on the as I live under the shadow of hill that improved things vastly pre . Since the switchover I have not been able to get the BBC . I have checked, rechecked, retuned and can confirm that the BBC channels are on . Yesterday with the amplifier still in place I had a signal strength of 60% and jumped from 40% upto 100% constantly. The suggestion of fitting an attenuator was proved by removing the amplifier (thought that this would prove one way or another without buying one) this made things even worse. The signal strength went down to 20% and quality (still jumping) from 0% upto 20%. By the way I live within 3 miles of the . It looks like I might have to call in an aerial guy and spend a vast amount of money just because of the switchover.

Andrew Walter's 3 posts GB flag

Andrew's: A's Freeview map A's terrain plot A's frequency data A's Freeview Detailed Coverage

Transmitter engineering

_{sentiment_very_satisfied}Owner

10:29 AM

- BBC ONE Weak ; related from 00:37 on 13 Jun BBC ONE Off Air; DSO related from 23:57 on 12 Jun to 00:36 on 13 Jun BBC ONE Weak Signal; DSO related from 05:02 on 12 Jun to 23:57 on 12 Jun BBC ONE Off Air; DSO related from 01:23 on 12 Jun to 05:02 [BBC]