I'm sick of freeview not coping with interference

In article , says...

On Fri, 30 Oct 2009 11:39:23 -0000
Terry Casey wrote:
Haven't a clue.

Perhaps it's time you did?

Why? It works.

No! You are just assuming it does (work properly, that is.)

There isn't any noise when the interference isn't on - the picture is
perfectly clear. But come the evening and there it is.

Well, there's a BIG clue for a start! What happens 'come the evening' in
October? Does it, perchance, get just a teensy, weensy bit dark?

Perhaps someone's found a remedy for that - things called lights!

So how about looking for a dodgy lamp - especially a fluorescent light
or CFL. And what about street lighting? Try keeping an eye on the street
and see if anything obvious happens when the interference starts.

Oh FFS sake. Why is there always someone on a group who assumes everyone
is an idiot apart from them? Do you honestly think I haven't checked everything
in my own house first?

Have you tried talking to the neighbours? After all, if it is as bad as
you say it must affect quite a large area - unless, of course, you're
the only one around with a really crap aerial ...

If it continues for much longer I intend to. Anyway , this is getting away
from the point. If freeview worked properly this wouldn't be an issue anyway.


You have made it perfectly clear that both your analogue and digital
reception is degraded.

You choose to accept the analogue degradation (but many others wouldn't)
but not the digital degradation (though others might ...)

There are, therefore, TWO issues here. One issue is the interference.
The other issue is what you will or won't accept. You choose to think
the latter is the more important; I choose to disagree.

If you sit back and do nothing for three years, you might find that it
all gets better by itself - come ASO, when the transmitted power of the
digital signals is increased tenfold. I won't insult your intelligence
by going into the necessity of retuning - I only mention it before
anybody picks me up on the point ...

--

Terry

My reference to the Daily Mail article was only as an amusing diversion.

In that particular case there was some threat to aviation safety. In the
OP's case I guess that unless he can identify the source of the interference
they will probably give the same advice as others he Get a new aerial or
wait until full power transmissions at DSO.

The readers comments below the Daily Mail article give a good insight on its
contributors - if any were needed - in that those correctly describing the
technical issues and mentioning the misleading headline are roundly voted
down. There's no letting the facts get in the way of a good story as far
as Daily Mail readers are concerned.

Roger R


"Brian Gaff" wrote in message
...
Yes, but if it turns out more than one person is affected, things might be
more constructive. I mean if someone has set up an arc welding business in
his garage offcom would not be amused if he/she has no way to stop
interference emmissions.

In article ,
wrote:
DVB-T will not work properly if it's corrupted by interference. By your
own admission you have a poor signal, so that will be vulnerable to
external interference. Is that because of an inadequate receiving
system (such as an indoor aerial, or knackered roof aerial), or just
that you

I live in london and have a roof antenna so its nothing to do with my
setup.

are currently not in a DTT served area, and you're attempting long
distance reception ?

10 miles to crystal palace.

You live that close to CP with a rooftop aerial yet get a noisy analogue
picture? Is it pointing through a tower block?

--
*According to my calculations, the problem doesn't exist.

Dave Plowman London SW
To e-mail, change noise into sound.

In article ,
wrote:
If it continues for much longer I intend to. Anyway , this is getting
away from the point. If freeview worked properly this wouldn't be an
issue anyway.

I suggest you invent a transmission system which is totally immune from
interference. Since you obviously know so much.

BTW I can't remember when last I had any man made interference on either
analogue or digital. Reception problems on analogue due to sun spots or
whatever, yes, on analogue. FreeView is fine.

--
*Wrinkled was not one of the things I wanted to be when I grew up

Dave Plowman London SW
To e-mail, change noise into sound.

Dave Plowman (News) wrote:
In article ,
wrote:
If it continues for much longer I intend to. Anyway , this is getting
away from the point. If freeview worked properly this wouldn't be an
issue anyway.

I suggest you invent a transmission system which is totally immune
from interference. Since you obviously know so much.

BTW I can't remember when last I had any man made interference on
either analogue or digital. Reception problems on analogue due to sun
spots or whatever, yes, on analogue. FreeView is fine.


I remember back in the fifties when interference was so bad (especially
withVHF and positive modulation) that parliament had to introduce
legislation which required that all new vehicles be fitted with suppressors.

Anyway, if the problem is impulse interference (sparklies on analogue while
it lasts - identifying the problem is harder when it's gone), it'll probably
mess up radio too. Take a tranny and tune it to a weaker MW/AM station where
you can hear both the programme and the interference (buzzes, pops or

Good idea, thats something I haven't tried yet. Whatever it is its been
knocking out some DAB stations as well as Freeview.

It would be almost impossible to track it down with a DAB portable.
If it's affecting UHF and DAB, it will almost certainly be evident on FM
and maybe LW/MW too. Because of the nature of FM, you will need
to tune the set into a station to hear the interference. Choose one that isn't
too strong.

Listening to the interference in this way can give clues about the device that is
causing it. Upload a WAV or MP3 sample somewhere and we can advise.

Finally it may be possible to use DF techniques (direction finding) to
produce cross bearings to localise the source, if the interference is audible
on MW (and more so on LW) then all you will need is a portable radio
and an A-Z

--
Graham.

%Profound_observation%

On Fri, 30 Oct 2009 17:42:18 +0000 (GMT)
"Dave Plowman (News)" wrote:
In article ,
wrote:
If it continues for much longer I intend to. Anyway , this is getting
away from the point. If freeview worked properly this wouldn't be an
issue anyway.

I suggest you invent a transmission system which is totally immune from
interference. Since you obviously know so much.

Oh put a sock in it Plowman. I want a transmission system which doesn't die
completely under interference conditions that the old analogue system coped
perfectly well with.

BTW I can't remember when last I had any man made interference on either
analogue or digital. Reception problems on analogue due to sun spots or
whatever, yes, on analogue. FreeView is fine.

Oh well , if it doesn't happen to you then obviously it NEVER happens. I
guess those of us who suffer from it are just delusional.

B2003

wrote in message ...
On Fri, 30 Oct 2009 17:42:18 +0000 (GMT)
"Dave Plowman (News)" wrote:
In article ,
wrote:
If it continues for much longer I intend to. Anyway , this is getting
away from the point. If freeview worked properly this wouldn't be an
issue anyway.

I suggest you invent a transmission system which is totally immune from
interference. Since you obviously know so much.

Oh put a sock in it Plowman. I want a transmission system which doesn't
die
completely under interference conditions that the old analogue system
coped
perfectly well with.

BTW I can't remember when last I had any man made interference on either
analogue or digital. Reception problems on analogue due to sun spots or
whatever, yes, on analogue. FreeView is fine.

Oh well , if it doesn't happen to you then obviously it NEVER happens. I
guess those of us who suffer from it are just delusional.

B2003


Have your tried a filtered main socket or a filtered mains extension socket?
It could be mains borne interference. Also try wrapping the mains lead
around a ferrite ring or core. It might also help if you do the same with
the antenna feeder (just before it enters the freeview box/tv). Some
freeview boxes/tvs are more susceptible to interference and break up than
others. There is no doubt about it that analogue works better when you
compare its ability to work no matter what.... Unfortunately it will soon
not be an option, so its going to be either freeview / freesat or sky
digital.

Rod

On Fri, 30 Oct 2009 11:06:23 +0000 (UTC),
wrote:

On Fri, 30 Oct 2009 10:47:43 +0000
Mark Carver wrote:
are currently not in a DTT served area, and you're attempting long
distance reception ?

10 miles to crystal palace.

If that's the case, and the interference is even visible on your
analogue pictures at that range from CP, then the source is either
*very* close by, or chucking out a serious levels of crap. Are you sure
your neighbours don't have a Van de Graaf generator in their house !!

The interference only started this week so I'm hoping its only temporary.
Perhaps someone is using some cheapo foreign power tools in the evening doing
some DIY work or something.

B2003

What do you mean by cheapo foreign power tools? We don't make anything
anymore in the UK so there isn't any option. In fact some of the
"cheapo" foreign stuff from China, for example, is superb. Not like it
used to be!

In article ,
wrote:
On Fri, 30 Oct 2009 17:42:18 +0000 (GMT)
"Dave Plowman (News)" wrote:
In article ,
wrote:
If it continues for much longer I intend to. Anyway , this is getting
away from the point. If freeview worked properly this wouldn't be an
issue anyway.

I suggest you invent a transmission system which is totally immune from
interference. Since you obviously know so much.

Oh put a sock in it Plowman. I want a transmission system which doesn't
die completely under interference conditions that the old analogue
system coped perfectly well with.

How many times must you be told that FreeView is running at well under the
ideal power - and will do until analogue is switched off?

BTW I can't remember when last I had any man made interference on either
analogue or digital. Reception problems on analogue due to sun spots or
whatever, yes, on analogue. FreeView is fine.

Oh well , if it doesn't happen to you then obviously it NEVER happens. I
guess those of us who suffer from it are just delusional.

Perhaps you'd explain your noisy analogue pictures - as asked? Which you
apparently consider ok?

B2003

--
*Learn from your parents' mistakes - use birth control.

Dave Plowman London SW
To e-mail, change noise into sound.