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"Davy" <david@REMOVETHISchobham.org.uk> wrote:


> Whenever a motorcycle goes past I get interference (like widely spaced
> horizontal broken lines).

The engine should be suppressed. Is it one particular motorcycle or any
motorcycle?  No problems from car engines?

--
Patrick (Durham UK)
http://www.pcrrn.co.uk
Do not reply direct, email via website above.
"There are 10 types of people in the world - those that know binary and
those that don't."
_____________________________________________________________________

In article <kKadnUggdNCiydvenZ2dnUVZ8qmdnZ2d@brightview.com>, Davy
<david@REMOVETHISchobham.org.uk> wrote:
> I have just moved to south Mere in Wiltshire and reception seems to be
> poor since all neighbours have fancy aerials with multiple x-shaped
> elements. Whenever a motorcycle goes past I get interference (like
> widely spaced horizontal broken lines). Is this normal in poor reception
> areas or does it indicate a poorly screened installation?  I inherited
> the installation but it is only a year old and looks good quality.

The problem you are getting is, for obvious reasons, called 'Ignition
Interference'. As Patrick says, motocycles should be 'suppressed' - i.e.
have devices that keep down the level of this interference.

If it isn't just one specific motocycle, then the problem may be that you
have a fairly weak signal. One strong enough to be well above the normal
steady background of noise, but not strong enough to survive the bursts of
interfering energy radiated by ignition in the motocycle(s).

If it  is just one cycle, then if possible, try and get that suppressed. (I
realise that might be difficult ;-> )

You might find a better antenna (aerial) and/or better screened cables
would help, but it is hard to tell from what you say. Do neighbours  get
the same problem despite having fancy aerials?

Slainte,

Jim

--
Electronics  http://www.st-and.ac.uk/~www_pa/Scots_Guide/intro/electron.htm
Audio Misc  http://www.st-and.demon.co.uk/AudioMisc/index.html
Armstrong Audio  http://www.st-and.demon.co.uk/Audio/armstrong.html
Barbirolli Soc. http://www.st-and.demon.co.uk/JBSoc/JBSoc.html

"Davy" <david@REMOVETHISchobham.org.uk> wrote in message
news:kKadnUggdNCiydvenZ2dnUVZ8qmdnZ2d@brightview.com...
>I have just moved to south Mere in Wiltshire and reception seems to be poor
> since all neighbours have fancy aerials with multiple x-shaped elements.
> Whenever a motorcycle goes past I get interference (like widely spaced
> horizontal broken lines).
> Is this normal in poor reception areas or does it indicate a poorly
> screened
> installation?  I inherited the installation but it is only a year old and
> looks good quality.
>
> cheers
>
> Davy
>
>


It's the TVL's "Enforcement Officers" out and about "catching" evaders...

http://www.tvlicensing.biz/phpBB2/viewtopic.php?t85&highlight=fleet

;-)

The signal is weak; the picture is a little grainy and it wobbles sometimes.

Don't seem to get a problem with cars, and it seems to be many motorcycles -
but it could be just one going past often (I never get to see it)

I have what looks like a new good aerial with multiple x-shaped elements; it
has a strange blue box attached to the pole. The aerial is probably pointing
to isle of Wight - about 50 miles away?
The aerial feeds 4 co-ax sockets, but only 2 TVs plugged in and only one on
at a time (the other on standby) - so signal probably not being attenuated?

Hope this helps?
Davy

"Jim Lesurf" <jcgl@st-and.demon.co.uk> wrote in message
news:4db62e1cd9jcgl@st-and.demon.co.uk...
> In article <kKadnUggdNCiydvenZ2dnUVZ8qmdnZ2d@brightview.com>, Davy
> <david@REMOVETHISchobham.org.uk> wrote:
> > I have just moved to south Mere in Wiltshire and reception seems to be
> > poor since all neighbours have fancy aerials with multiple x-shaped
> > elements. Whenever a motorcycle goes past I get interference (like
> > widely spaced horizontal broken lines). Is this normal in poor reception
> > areas or does it indicate a poorly screened installation?  I inherited
> > the installation but it is only a year old and looks good quality.
>
> The problem you are getting is, for obvious reasons, called 'Ignition
> Interference'. As Patrick says, motocycles should be 'suppressed' - i.e.
> have devices that keep down the level of this interference.
>
> If it isn't just one specific motocycle, then the problem may be that you
> have a fairly weak signal. One strong enough to be well above the normal
> steady background of noise, but not strong enough to survive the bursts of
> interfering energy radiated by ignition in the motocycle(s).
>
> If it  is just one cycle, then if possible, try and get that suppressed.
(I
> realise that might be difficult ;-> )
>
> You might find a better antenna (aerial) and/or better screened cables
> would help, but it is hard to tell from what you say. Do neighbours  get
> the same problem despite having fancy aerials?
>
> Slainte,
>
> Jim
>
> --
> Electronics
http://www.st-and.ac.uk/~www_pa/Scots_Guide/intro/electron.htm
> Audio Misc  http://www.st-and.demon.co.uk/AudioMisc/index.html
> Armstrong Audio  http://www.st-and.demon.co.uk/Audio/armstrong.html
> Barbirolli Soc. http://www.st-and.demon.co.uk/JBSoc/JBSoc.html

"Davy" <david@REMOVETHISchobham.org.uk> wrote:


> Don't seem to get a problem with cars, and it seems to be many motorcycles -
> but it could be just one going past often (I never get to see it)

Different engines will produce different patterns of interference. If
it's always the same, it's likely to be the same machine, perhaps one
who lives nearby and so passes frequently.

--
Patrick (Durham UK)
PCRRN Internet Services
Web Design for the Community
http://www.pcrrn.co.uk
Do not reply direct, email via website above.
"There are 10 types of people in the world - those that know binary and
those that don't."
_____________________________________________________________________

"Davy" <david@REMOVETHISchobham.org.uk> wrote in message
news:Z-SdnY01y-_NJdveRVnyrw@brightview.com...
> The signal is weak; the picture is a little grainy and it wobbles
sometimes.
>
> Don't seem to get a problem with cars, and it seems to be many
motorcycles -
> but it could be just one going past often (I never get to see it)
>
> I have what looks like a new good aerial with multiple x-shaped elements;
it
> has a strange blue box attached to the pole. The aerial is probably
pointing
> to isle of Wight - about 50 miles away?
> The aerial feeds 4 co-ax sockets, but only 2 TVs plugged in and only one
on
> at a time (the other on standby) - so signal probably not being
attenuated?
>
> Hope this helps?
> Davy

If the aerial is feeding four outlets, then the signal is being chopped up
and hence attenuated.

Have you not got another main transmitter to point to?


--
MESSAGE ENDS.
John Porcella

"Davy" <david@REMOVETHISchobham.org.uk> wrote in message
news:kKadnUggdNCiydvenZ2dnUVZ8qmdnZ2d@brightview.com...
> I have just moved to south Mere in Wiltshire and reception seems to be
poor
> since all neighbours have fancy aerials with multiple x-shaped elements.
> Whenever a motorcycle goes past I get interference (like widely spaced
> horizontal broken lines).
> Is this normal in poor reception areas or does it indicate a poorly
screened
> installation?  I inherited the installation but it is only a year old and
> looks good quality.
>
> cheers
>
> Davy

Poorly screen alternator?


--
MESSAGE ENDS.
John Porcella

..
> > Whenever a motorcycle goes past I get interference (like widely spaced
> > horizontal broken lines).

You can fix this easily with a length of good quality coax (CT100 is
best). Stretch it across the road at neck height.

Bill

"Davy" <david@REMOVETHISchobham.org.uk> wrote in message
news:kKadnUggdNCiydvenZ2dnUVZ8qmdnZ2d@brightview.com...
>I have just moved to south Mere in Wiltshire and reception seems to be poor
> since all neighbours have fancy aerials with multiple x-shaped elements.
> Whenever a motorcycle goes past I get interference (like widely spaced
> horizontal broken lines).
> Is this normal in poor reception areas or does it indicate a poorly
> screened
> installation?  I inherited the installation but it is only a year old and
> looks good quality.

Cool - I thought I was the only one with that!  Only crappy little mopeds do
it - no other type of car or bike.  I have fantastic reception on all
channels normally.





a

> > > Whenever a motorcycle goes past I get interference (like widely spaced
> > > horizontal broken lines).
>
> You can fix this easily with a length of good quality coax (CT100 is
> best). Stretch it across the road at neck height.



But won't the poor OP will be charged with 'incorrect termination'?

--
Graham.



%Profound_observation%