Around 19-00 yesterday and from 08-30 for about ½ hour this morning,  my 
terrestrial BBC1 became unwatchable and broadband dropped out resetting the 
synch rate down a few hundred kbps.  The appearance on the TV was lots of 
short  horizontal white lines progressing downwards and a continuos narrow 
white horizontal full screenwidth band again moving downwards.  This was 
accompanied by loud hissing and crackling which drowned out the sound. 
Both my TVs were affected at the same times,   but no other channels 
appeared to be affected.    Since there had been a British Gas van around at 
both times and we have just started a cold spell I wondered if it was some 
radio interference from a CH water pump or fumes extractor fan.    Next door 
are today having a CH boiler/pump assembly changed and the interference has 
now stopped,  since the unit was disconnected.   However should it occur 
again and that was not the problem,   whom can I contact towards detecting 
the source of the interference to my TV?    In the distant past I believe it 
was the province of the old GPO,  but who would it be today?
-- 
Heard melodies are sweet, but those Unheard are sweeter
flyingnun@tiscali.co.uk FN 2°°8 +,  Mungo Brandybuck of Buckland

Flyiñg Ñuñ 2°°8 + wrote:
> Around 19-00 yesterday and from 08-30 for about ½ hour this morning,  my 
> terrestrial BBC1 became unwatchable and broadband dropped out resetting the 
> synch rate down a few hundred kbps.  The appearance on the TV was lots of 
> short  horizontal white lines progressing downwards and a continuos narrow 
> white horizontal full screenwidth band again moving downwards. 

Analogue TV then.

> This was 
> accompanied by loud hissing and crackling which drowned out the sound. 
> Both my TVs were affected at the same times,   but no other channels 
> appeared to be affected.    Since there had been a British Gas van around at 
> both times and we have just started a cold spell I wondered if it was some 
> radio interference from a CH water pump or fumes extractor fan.

Not at that level, no.

Might be excessive arcing somewhere on the mains.Someone using an arc 
welder maybe?

Or a failing insulator on a mains line somewhere..

>    Next door 
> are today having a CH boiler/pump assembly changed and the interference has 
> now stopped,  since the unit was disconnected.   However should it occur 
> again and that was not the problem,   whom can I contact towards detecting 
> the source of the interference to my TV?    In the distant past I believe it 
> was the province of the old GPO,  but who would it be today?


It's is probably not worth it. If it's not there now, they wont find 
anything.

It could have been a powerful walkie talkie type setup somewhere very 
close as well.

The Natural Philosopher wrote:
> Flyiñg Ñuñ 2°°8 + wrote:
>> Around 19-00 yesterday and from 08-30 for about ½ hour this morning,
>> my terrestrial BBC1 became unwatchable and broadband dropped out
>> resetting the synch rate down a few hundred kbps.  The appearance on
>> the TV was lots of short  horizontal white lines progressing
>> downwards and a continuos narrow white horizontal full screenwidth
>> band again moving downwards.
>
> Analogue TV then.
>
Yep

>> This was
>> accompanied by loud hissing and crackling which drowned out the
>> sound. Both my TVs were affected at the same times,   but no other 
>> channels
>> appeared to be affected.    Since there had been a British Gas van
>> around at both times and we have just started a cold spell I
>> wondered if it was some radio interference from a CH water pump or
>> fumes extractor fan.
>
> Not at that level, no.
>
> Might be excessive arcing somewhere on the mains.Someone using an arc
> welder maybe?
>
> Or a failing insulator on a mains line somewhere..
>
>>    Next door
>> are today having a CH boiler/pump assembly changed and the
>> interference has now stopped,  since the unit was disconnected.  However 
>> should it occur again and that was not the problem,   whom
>> can I contact towards detecting the source of the interference to my
>> TV?    In the distant past I believe it was the province of the old
>> GPO,  but who would it be today?
>
>
> It's is probably not worth it. If it's not there now, they wont find
> anything.
>
But who would *thet* be who could investigate it these days?

> It could have been a powerful walkie talkie type setup somewhere very
> close as well.
>
It seemed to be on and off most of yesterday evening - well up to midnight 
that I know of -  and early this morning.  That's why I wondered if it could 
be associated with some domestic heating system.   Not mine since I have gas 
fires and no electris other than a timer switched immersion heater and 
electric convector heater,  neither of which were on at the times quoted. 
Not happened again since ,  so all digits crossed that it won't happen 
again,    but I bet it does.
-- 
Heard melodies are sweet, but those Unheard are sweeter
flyingnun@tiscali.co.uk FN 2°°8 +,  Mungo Brandybuck of Buckland

"Flyiñg Ñuñ 2°°8 +"  wrote in message 
news:6kmcc2F8nqlgU1@mid.individual.net...
> The Natural Philosopher wrote:
>> Flyiñg Ñuñ 2°°8 + wrote:
>>> Around 19-00 yesterday and from 08-30 for about ½ hour this morning,
>>> my terrestrial BBC1 became unwatchable and broadband dropped out
>>> resetting the synch rate down a few hundred kbps.  The appearance on
>>> the TV was lots of short  horizontal white lines progressing
>>> downwards and a continuos narrow white horizontal full screenwidth
>>> band again moving downwards.
>>
>> Analogue TV then.
>>
> Yep
>
>>> This was
>>> accompanied by loud hissing and crackling which drowned out the
>>> sound. Both my TVs were affected at the same times,   but no other 
>>> channels
>>> appeared to be affected.    Since there had been a British Gas van
>>> around at both times and we have just started a cold spell I
>>> wondered if it was some radio interference from a CH water pump or
>>> fumes extractor fan.
>>
>> Not at that level, no.
>>
>> Might be excessive arcing somewhere on the mains.Someone using an arc
>> welder maybe?
>>
>> Or a failing insulator on a mains line somewhere..
>>
>>>    Next door
>>> are today having a CH boiler/pump assembly changed and the
>>> interference has now stopped,  since the unit was disconnected.  However 
>>> should it occur again and that was not the problem,   whom
>>> can I contact towards detecting the source of the interference to my
>>> TV?    In the distant past I believe it was the province of the old
>>> GPO,  but who would it be today?
>>
>>
>> It's is probably not worth it. If it's not there now, they wont find
>> anything.
>>
> But who would *thet* be who could investigate it these days?
>
>> It could have been a powerful walkie talkie type setup somewhere very
>> close as well.
>>
> It seemed to be on and off most of yesterday evening - well up to midnight 
> that I know of -  and early this morning.  That's why I wondered if it 
> could be associated with some domestic heating system.   Not mine since I 
> have gas fires and no electris other than a timer switched immersion 
> heater and electric convector heater,  neither of which were on at the 
> times quoted. Not happened again since ,  so all digits crossed that it 
> won't happen again,    but I bet it does.

The answer is:
http://www.ofcom.org.uk/complain/inter/tv/intbr/

George

Flyiñg Ñuñ 2°°8 + wrote:
> The Natural Philosopher wrote:
>> Flyiñg Ñuñ 2°°8 + wrote:
>>> Around 19-00 yesterday and from 08-30 for about ½ hour this morning,
>>> my terrestrial BBC1 became unwatchable and broadband dropped out
>>> resetting the synch rate down a few hundred kbps.  The appearance on
>>> the TV was lots of short  horizontal white lines progressing
>>> downwards and a continuos narrow white horizontal full screenwidth
>>> band again moving downwards.
>> Analogue TV then.
>>
> Yep
> 
>>> This was
>>> accompanied by loud hissing and crackling which drowned out the
>>> sound. Both my TVs were affected at the same times,   but no other 
>>> channels
>>> appeared to be affected.    Since there had been a British Gas van
>>> around at both times and we have just started a cold spell I
>>> wondered if it was some radio interference from a CH water pump or
>>> fumes extractor fan.
>> Not at that level, no.
>>
>> Might be excessive arcing somewhere on the mains.Someone using an arc
>> welder maybe?
>>
>> Or a failing insulator on a mains line somewhere..
>>
>>>    Next door
>>> are today having a CH boiler/pump assembly changed and the
>>> interference has now stopped,  since the unit was disconnected.  However 
>>> should it occur again and that was not the problem,   whom
>>> can I contact towards detecting the source of the interference to my
>>> TV?    In the distant past I believe it was the province of the old
>>> GPO,  but who would it be today?
>>
>> It's is probably not worth it. If it's not there now, they wont find
>> anything.
>>
> But who would *thet* be who could investigate it these days?

Not sure..the beeb would know..suspect its OfCom in fact.

> 
>> It could have been a powerful walkie talkie type setup somewhere very
>> close as well.
>>
> It seemed to be on and off most of yesterday evening - well up to midnight 
> that I know of -  and early this morning.  That's why I wondered if it could 
> be associated with some domestic heating system.   Not mine since I have gas 
> fires and no electris other than a timer switched immersion heater and 
> electric convector heater,  neither of which were on at the times quoted. 
> Not happened again since ,  so all digits crossed that it won't happen 
> again,    but I bet it does.


How long was it on FOR? seconds, or minutes. If seconds it could be an 
arcing contact on a motorised valve, though this is less a hiss than the 
sound of disintegrating bearings in a racing engine IYSWIM.


Ive gt a couple of crap thermostats that do this. about 3 seconds of 
total mayhem on all RF equipment.

George Weston wrote:
> "Flyiñg Ñuñ 2°°8 +"  wrote in message
> news:6kmcc2F8nqlgU1@mid.individual.net...
>> The Natural Philosopher wrote:
>>> Flyiñg Ñuñ 2°°8 + wrote:
>>>> Around 19-00 yesterday and from 08-30 for about ½ hour this
>>>> morning, my terrestrial BBC1 became unwatchable and broadband dropped 
>>>> out
>>>> resetting the synch rate down a few hundred kbps.  The appearance
>>>> on the TV was lots of short  horizontal white lines progressing
>>>> downwards and a continuos narrow white horizontal full screenwidth
>>>> band again moving downwards.
>>>
>>> Analogue TV then.
>>>
>> Yep
>>
>>>> This was
>>>> accompanied by loud hissing and crackling which drowned out the
>>>> sound. Both my TVs were affected at the same times,   but no other
>>>> channels
>>>> appeared to be affected.    Since there had been a British Gas van
>>>> around at both times and we have just started a cold spell I
>>>> wondered if it was some radio interference from a CH water pump or
>>>> fumes extractor fan.
>>>
>>> Not at that level, no.
>>>
>>> Might be excessive arcing somewhere on the mains.Someone using an
>>> arc welder maybe?
>>>
>>> Or a failing insulator on a mains line somewhere..
>>>
>>>>    Next door
>>>> are today having a CH boiler/pump assembly changed and the
>>>> interference has now stopped,  since the unit was disconnected. However 
>>>> should it occur again and that was not the problem,   whom
>>>> can I contact towards detecting the source of the interference to
>>>> my TV?    In the distant past I believe it was the province of the
>>>> old GPO,  but who would it be today?
>>>
>>>
>>> It's is probably not worth it. If it's not there now, they wont find
>>> anything.
>>>
>> But who would *thet* be who could investigate it these days?
>>
>>> It could have been a powerful walkie talkie type setup somewhere
>>> very close as well.
>>>
>> It seemed to be on and off most of yesterday evening - well up to
>> midnight that I know of -  and early this morning.  That's why I
>> wondered if it could be associated with some domestic heating
>> system.   Not mine since I have gas fires and no electris other than
>> a timer switched immersion heater and electric convector heater, neither 
>> of which were on at the times quoted. Not happened again
>> since ,  so all digits crossed that it won't happen again,    but I
>> bet it does.
>
> The answer is:
> http://www.ofcom.org.uk/complain/inter/tv/intbr/
>
> George

Thanks George that's what I was after.
-- 
Heard melodies are sweet, but those Unheard are sweeter
flyingnun@tiscali.co.uk FN 2°°8 +,  Mungo Brandybuck of Buckland

The Natural Philosopher wrote:
> Flyiñg Ñuñ 2°°8 + wrote:
>> The Natural Philosopher wrote:
>>> Flyiñg Ñuñ 2°°8 + wrote:
>>>> Around 19-00 yesterday and from 08-30 for about ½ hour this
>>>> morning, my terrestrial BBC1 became unwatchable and broadband dropped 
>>>> out
>>>> resetting the synch rate down a few hundred kbps.  The appearance
>>>> on the TV was lots of short  horizontal white lines progressing
>>>> downwards and a continuos narrow white horizontal full screenwidth
>>>> band again moving downwards.
>>> Analogue TV then.
>>>
>> Yep
>>
>>>> This was
>>>> accompanied by loud hissing and crackling which drowned out the
>>>> sound. Both my TVs were affected at the same times,   but no other
>>>> channels
>>>> appeared to be affected.    Since there had been a British Gas van
>>>> around at both times and we have just started a cold spell I
>>>> wondered if it was some radio interference from a CH water pump or
>>>> fumes extractor fan.
>>> Not at that level, no.
>>>
>>> Might be excessive arcing somewhere on the mains.Someone using an
>>> arc welder maybe?
>>>
>>> Or a failing insulator on a mains line somewhere..
>>>
>>>>    Next door
>>>> are today having a CH boiler/pump assembly changed and the
>>>> interference has now stopped,  since the unit was disconnected. However 
>>>> should it occur again and that was not the problem,   whom
>>>> can I contact towards detecting the source of the interference to
>>>> my TV?    In the distant past I believe it was the province of the
>>>> old GPO,  but who would it be today?
>>>
>>> It's is probably not worth it. If it's not there now, they wont find
>>> anything.
>>>
>> But who would *thet* be who could investigate it these days?
>
> Not sure..the beeb would know..suspect its OfCom in fact.
>
>>
>>> It could have been a powerful walkie talkie type setup somewhere
>>> very close as well.
>>>
>> It seemed to be on and off most of yesterday evening - well up to
>> midnight that I know of -  and early this morning.  That's why I
>> wondered if it could be associated with some domestic heating
>> system.   Not mine since I have gas fires and no electris other than
>> a timer switched immersion heater and electric convector heater, neither 
>> of which were on at the times quoted. Not happened again
>> since ,  so all digits crossed that it won't happen again,    but I
>> bet it does.
>
>
> How long was it on FOR? seconds, or minutes. If seconds it could be an
> arcing contact on a motorised valve, though this is less a hiss than
> the sound of disintegrating bearings in a racing engine IYSWIM.
>
>
> Ive got a couple of crap thermostats that do this. about 3 seconds of
> total mayhem on all RF equipment.

Several minutes with very short breaks for around ½ hour whilst I was eating 
my dinner.  Then during the evening again in short spells (minutes) up 'til 
an least midnight,  I didn't observe it at the time but an  hoursworth of 
VCR recording I'd taken between 21-00 to 22-00.  Then again for a ½ hour 
period this morning.   I tnink it probably was happening lunch time today 
since my BB connection dropped out leading to a sych rate fall from 6688 to 
6176 kbps at 13-46.    This is a most unusual occurrence during the day.
-- 
Heard melodies are sweet, but those Unheard are sweeter
flyingnun@tiscali.co.uk FN 2°°8 +,  Mungo Brandybuck of Buckland

"Flyiñg Ñuñ 2°°8 +"  wrote in message 
news:6kmneuF8njsgU1@mid.individual.net...
> George Weston wrote:
>> "Flyiñg Ñuñ 2°°8 +"  wrote in message
>> news:6kmcc2F8nqlgU1@mid.individual.net...
>>> The Natural Philosopher wrote:
>>>> Flyiñg Ñuñ 2°°8 + wrote:
>>>>> Around 19-00 yesterday and from 08-30 for about ½ hour this
>>>>> morning, my terrestrial BBC1 became unwatchable and broadband dropped 
>>>>> out
>>>>> resetting the synch rate down a few hundred kbps.  The appearance
>>>>> on the TV was lots of short  horizontal white lines progressing
>>>>> downwards and a continuos narrow white horizontal full screenwidth
>>>>> band again moving downwards.
>>>>
>>>> Analogue TV then.
>>>>
>>> Yep
>>>
>>>>> This was
>>>>> accompanied by loud hissing and crackling which drowned out the
>>>>> sound. Both my TVs were affected at the same times,   but no other
>>>>> channels
>>>>> appeared to be affected.    Since there had been a British Gas van
>>>>> around at both times and we have just started a cold spell I
>>>>> wondered if it was some radio interference from a CH water pump or
>>>>> fumes extractor fan.
>>>>
>>>> Not at that level, no.
>>>>
>>>> Might be excessive arcing somewhere on the mains.Someone using an
>>>> arc welder maybe?
>>>>
>>>> Or a failing insulator on a mains line somewhere..
>>>>
>>>>>    Next door
>>>>> are today having a CH boiler/pump assembly changed and the
>>>>> interference has now stopped,  since the unit was disconnected. 
>>>>> However should it occur again and that was not the problem,   whom
>>>>> can I contact towards detecting the source of the interference to
>>>>> my TV?    In the distant past I believe it was the province of the
>>>>> old GPO,  but who would it be today?
>>>>
>>>>
>>>> It's is probably not worth it. If it's not there now, they wont find
>>>> anything.
>>>>
>>> But who would *thet* be who could investigate it these days?
>>>
>>>> It could have been a powerful walkie talkie type setup somewhere
>>>> very close as well.
>>>>
>>> It seemed to be on and off most of yesterday evening - well up to
>>> midnight that I know of -  and early this morning.  That's why I
>>> wondered if it could be associated with some domestic heating
>>> system.   Not mine since I have gas fires and no electris other than
>>> a timer switched immersion heater and electric convector heater, neither 
>>> of which were on at the times quoted. Not happened again
>>> since ,  so all digits crossed that it won't happen again,    but I
>>> bet it does.
>>
>> The answer is:
>> http://www.ofcom.org.uk/complain/inter/tv/intbr/
>>
>> George
>
> Thanks George that's what I was after.

Let's hope they don't find anything on your premises that's causing the 
problem.
You have to agree up-front to pay them fifty quid if they find it's down to 
you!

George

Flyiñg Ñuñ 2°°8 + wrote:
> The Natural Philosopher wrote:
>> Flyiñg Ñuñ 2°°8 + wrote:
>>> The Natural Philosopher wrote:
>>>> Flyiñg Ñuñ 2°°8 + wrote:
>>>>> Around 19-00 yesterday and from 08-30 for about ½ hour this
>>>>> morning, my terrestrial BBC1 became unwatchable and broadband dropped 
>>>>> out
>>>>> resetting the synch rate down a few hundred kbps.  The appearance
>>>>> on the TV was lots of short  horizontal white lines progressing
>>>>> downwards and a continuos narrow white horizontal full screenwidth
>>>>> band again moving downwards.
>>>> Analogue TV then.
>>>>
>>> Yep
>>>
>>>>> This was
>>>>> accompanied by loud hissing and crackling which drowned out the
>>>>> sound. Both my TVs were affected at the same times,   but no other
>>>>> channels
>>>>> appeared to be affected.    Since there had been a British Gas van
>>>>> around at both times and we have just started a cold spell I
>>>>> wondered if it was some radio interference from a CH water pump or
>>>>> fumes extractor fan.
>>>> Not at that level, no.
>>>>
>>>> Might be excessive arcing somewhere on the mains.Someone using an
>>>> arc welder maybe?
>>>>
>>>> Or a failing insulator on a mains line somewhere..
>>>>
>>>>>    Next door
>>>>> are today having a CH boiler/pump assembly changed and the
>>>>> interference has now stopped,  since the unit was disconnected. However 
>>>>> should it occur again and that was not the problem,   whom
>>>>> can I contact towards detecting the source of the interference to
>>>>> my TV?    In the distant past I believe it was the province of the
>>>>> old GPO,  but who would it be today?
>>>> It's is probably not worth it. If it's not there now, they wont find
>>>> anything.
>>>>
>>> But who would *thet* be who could investigate it these days?
>> Not sure..the beeb would know..suspect its OfCom in fact.
>>
>>>> It could have been a powerful walkie talkie type setup somewhere
>>>> very close as well.
>>>>
>>> It seemed to be on and off most of yesterday evening - well up to
>>> midnight that I know of -  and early this morning.  That's why I
>>> wondered if it could be associated with some domestic heating
>>> system.   Not mine since I have gas fires and no electris other than
>>> a timer switched immersion heater and electric convector heater, neither 
>>> of which were on at the times quoted. Not happened again
>>> since ,  so all digits crossed that it won't happen again,    but I
>>> bet it does.
>>
>> How long was it on FOR? seconds, or minutes. If seconds it could be an
>> arcing contact on a motorised valve, though this is less a hiss than
>> the sound of disintegrating bearings in a racing engine IYSWIM.
>>
>>
>> Ive got a couple of crap thermostats that do this. about 3 seconds of
>> total mayhem on all RF equipment.
> 
> Several minutes with very short breaks for around ½ hour whilst I was eating 
> my dinner.  Then during the evening again in short spells (minutes) up 'til 
> an least midnight,  I didn't observe it at the time but an  hoursworth of 
> VCR recording I'd taken between 21-00 to 22-00.  Then again for a ½ hour 
> period this morning.   I tnink it probably was happening lunch time today 
> since my BB connection dropped out leading to a sych rate fall from 6688 to 
> 6176 kbps at 13-46.    This is a most unusual occurrence during the day.


Right. Thats unlikely to be switching noise, but it might be something 
to do with the boiler/pump.

Normally these are extremely well suppressed.

AS a first off, I would record tapes every night for a record, and try 
and identify a pattern.

I would also contact your neighbour and say that you are having issues, 
and are they? Don't mention it as being their fault. It may not be. If 
they are also having it, its a good start.If they say 'oh, yes, thats 
the new boiler: the guy is coming to replace XYZ on Friday' then there 
you are!

The Natural Philosopher wrote:
> Flyiñg Ñuñ 2°°8 + wrote:
>> The Natural Philosopher wrote:
>>> Flyiñg Ñuñ 2°°8 + wrote:
>>>> The Natural Philosopher wrote:
>>>>> Flyiñg Ñuñ 2°°8 + wrote:
>>>>>> Around 19-00 yesterday and from 08-30 for about ½ hour this
>>>>>> morning, my terrestrial BBC1 became unwatchable and broadband
>>>>>> dropped out
>>>>>> resetting the synch rate down a few hundred kbps.  The appearance
>>>>>> on the TV was lots of short  horizontal white lines progressing
>>>>>> downwards and a continuos narrow white horizontal full
>>>>>> screenwidth band again moving downwards.
>>>>> Analogue TV then.
>>>>>
>>>> Yep
>>>>
>>>>>> This was
>>>>>> accompanied by loud hissing and crackling which drowned out the
>>>>>> sound. Both my TVs were affected at the same times,   but no
>>>>>> other channels
>>>>>> appeared to be affected.    Since there had been a British Gas
>>>>>> van around at both times and we have just started a cold spell I
>>>>>> wondered if it was some radio interference from a CH water pump
>>>>>> or fumes extractor fan.
>>>>> Not at that level, no.
>>>>>
>>>>> Might be excessive arcing somewhere on the mains.Someone using an
>>>>> arc welder maybe?
>>>>>
>>>>> Or a failing insulator on a mains line somewhere..
>>>>>
>>>>>>    Next door
>>>>>> are today having a CH boiler/pump assembly changed and the
>>>>>> interference has now stopped,  since the unit was disconnected.
>>>>>> However should it occur again and that was not the problem,  whom can 
>>>>>> I contact towards detecting the source of the interference to
>>>>>> my TV?    In the distant past I believe it was the province of
>>>>>> the old GPO,  but who would it be today?
>>>>> It's is probably not worth it. If it's not there now, they wont
>>>>> find anything.
>>>>>
>>>> But who would *thet* be who could investigate it these days?
>>> Not sure..the beeb would know..suspect its OfCom in fact.
>>>
>>>>> It could have been a powerful walkie talkie type setup somewhere
>>>>> very close as well.
>>>>>
>>>> It seemed to be on and off most of yesterday evening - well up to
>>>> midnight that I know of -  and early this morning.  That's why I
>>>> wondered if it could be associated with some domestic heating
>>>> system.   Not mine since I have gas fires and no electris other
>>>> than a timer switched immersion heater and electric convector heater,
>>>> neither of which were on at the times quoted. Not happened again
>>>> since ,  so all digits crossed that it won't happen again,    but I
>>>> bet it does.
>>>
>>> How long was it on FOR? seconds, or minutes. If seconds it could be
>>> an arcing contact on a motorised valve, though this is less a hiss
>>> than the sound of disintegrating bearings in a racing engine IYSWIM.
>>>
>>>
>>> Ive got a couple of crap thermostats that do this. about 3 seconds
>>> of total mayhem on all RF equipment.
>>
>> Several minutes with very short breaks for around ½ hour whilst I
>> was eating my dinner.  Then during the evening again in short spells
>> (minutes) up 'til an least midnight,  I didn't observe it at the
>> time but an  hoursworth of VCR recording I'd taken between 21-00 to
>> 22-00.  Then again for a ½ hour period this morning.   I tnink it
>> probably was happening lunch time today since my BB connection
>> dropped out leading to a sych rate fall from 6688 to 6176 kbps at
>> 13-46.    This is a most unusual occurrence during the day.
>
>
> Right. Thats unlikely to be switching noise, but it might be something
> to do with the boiler/pump.
>
> Normally these are extremely well suppressed.
>
> AS a first off, I would record tapes every night for a record, and try
> and identify a pattern.
>
> I would also contact your neighbour and say that you are having
> issues, and are they? Don't mention it as being their fault. It may
> not be. If they are also having it, its a good start.If they say 'oh,
> yes, thats the new boiler: the guy is coming to replace XYZ on
> Friday' then there you are!

That's a diffiucult one.  Next door one side are in the process of having a 
new boiler fitted right now (the old one was leaking),  but the neighbours 
on the other side had the Corgi engineer in yesterday afternoon,  so who 
knows.  Hope it was the former and the new boiler will be free of of fault. 
However if the latter it could be something the engineer played with 
yesterday seeing I first noticed it between 6 and 7 pm yesterday.
-- 
Heard melodies are sweet, but those Unheard are sweeter
flyingnun@tiscali.co.uk FN 2°°8 +,  Mungo Brandybuck of Buckland

George Weston wrote:
> "Flyiñg Ñuñ 2°°8 +"  wrote in message
> news:6kmneuF8njsgU1@mid.individual.net...
>> George Weston wrote:
>>> "Flyiñg Ñuñ 2°°8 +"  wrote in message
>>> news:6kmcc2F8nqlgU1@mid.individual.net...
>>>> The Natural Philosopher wrote:
>>>>> Flyiñg Ñuñ 2°°8 + wrote:
>>>>>> Around 19-00 yesterday and from 08-30 for about ½ hour this
>>>>>> morning, my terrestrial BBC1 became unwatchable and broadband
>>>>>> dropped out
>>>>>> resetting the synch rate down a few hundred kbps.  The appearance
>>>>>> on the TV was lots of short  horizontal white lines progressing
>>>>>> downwards and a continuos narrow white horizontal full
>>>>>> screenwidth band again moving downwards.
>>>>>
>>>>> Analogue TV then.
>>>>>
>>>> Yep
>>>>
>>>>>> This was
>>>>>> accompanied by loud hissing and crackling which drowned out the
>>>>>> sound. Both my TVs were affected at the same times,   but no
>>>>>> other channels
>>>>>> appeared to be affected.    Since there had been a British Gas
>>>>>> van around at both times and we have just started a cold spell I
>>>>>> wondered if it was some radio interference from a CH water pump
>>>>>> or fumes extractor fan.
>>>>>
>>>>> Not at that level, no.
>>>>>
>>>>> Might be excessive arcing somewhere on the mains.Someone using an
>>>>> arc welder maybe?
>>>>>
>>>>> Or a failing insulator on a mains line somewhere..
>>>>>
>>>>>>    Next door
>>>>>> are today having a CH boiler/pump assembly changed and the
>>>>>> interference has now stopped,  since the unit was disconnected.
>>>>>> However should it occur again and that was not the problem,  whom can 
>>>>>> I contact towards detecting the source of the
>>>>>> interference to my TV?    In the distant past I believe it was the 
>>>>>> province of
>>>>>> the old GPO,  but who would it be today?
>>>>>
>>>>>
>>>>> It's is probably not worth it. If it's not there now, they wont
>>>>> find anything.
>>>>>
>>>> But who would *thet* be who could investigate it these days?
>>>>
>>>>> It could have been a powerful walkie talkie type setup somewhere
>>>>> very close as well.
>>>>>
>>>> It seemed to be on and off most of yesterday evening - well up to
>>>> midnight that I know of -  and early this morning.  That's why I
>>>> wondered if it could be associated with some domestic heating
>>>> system.   Not mine since I have gas fires and no electris other
>>>> than a timer switched immersion heater and electric convector heater,
>>>> neither of which were on at the times quoted. Not happened again
>>>> since ,  so all digits crossed that it won't happen again,    but I
>>>> bet it does.
>>>
>>> The answer is:
>>> http://www.ofcom.org.uk/complain/inter/tv/intbr/
>>>
>>> George
>>
>> Thanks George that's what I was after.
>
> Let's hope they don't find anything on your premises that's causing
> the problem.
> You have to agree up-front to pay them fifty quid if they find it's
> down to you!
>
> George

I'm pretty certain it nothing I have in my house that is causing it.   Only 
electrical devices that were on,  at the time were fridge,   router,  usual 
lighting,  a couple of pond pumps (30 foot from the house - and they're on 
24/7),  TV,  Sky digital set top box, Hi-fi and VCR, all  in stand by mode.
-- 
Heard melodies are sweet, but those Unheard are sweeter
flyingnun@tiscali.co.uk FN 2°°8 +,  Mungo Brandybuck of Buckland

Flyiñg Ñuñ 2°°8 + wrote:
> George Weston wrote:
>> "Flyiñg Ñuñ 2°°8 +"  wrote in message
>> news:6kmneuF8njsgU1@mid.individual.net...
>>> George Weston wrote:
>>>> "Flyiñg Ñuñ 2°°8 +"  wrote in message
>>>> news:6kmcc2F8nqlgU1@mid.individual.net...
>>>>> The Natural Philosopher wrote:
>>>>>> Flyiñg Ñuñ 2°°8 + wrote:
>>>>>>> Around 19-00 yesterday and from 08-30 for about ½ hour this
>>>>>>> morning, my terrestrial BBC1 became unwatchable and broadband
>>>>>>> dropped out
>>>>>>> resetting the synch rate down a few hundred kbps.  The appearance
>>>>>>> on the TV was lots of short  horizontal white lines progressing
>>>>>>> downwards and a continuos narrow white horizontal full
>>>>>>> screenwidth band again moving downwards.
>>>>>> Analogue TV then.
>>>>>>
>>>>> Yep
>>>>>
>>>>>>> This was
>>>>>>> accompanied by loud hissing and crackling which drowned out the
>>>>>>> sound. Both my TVs were affected at the same times,   but no
>>>>>>> other channels
>>>>>>> appeared to be affected.    Since there had been a British Gas
>>>>>>> van around at both times and we have just started a cold spell I
>>>>>>> wondered if it was some radio interference from a CH water pump
>>>>>>> or fumes extractor fan.
>>>>>> Not at that level, no.
>>>>>>
>>>>>> Might be excessive arcing somewhere on the mains.Someone using an
>>>>>> arc welder maybe?
>>>>>>
>>>>>> Or a failing insulator on a mains line somewhere..
>>>>>>
>>>>>>>    Next door
>>>>>>> are today having a CH boiler/pump assembly changed and the
>>>>>>> interference has now stopped,  since the unit was disconnected.
>>>>>>> However should it occur again and that was not the problem,  whom can 
>>>>>>> I contact towards detecting the source of the
>>>>>>> interference to my TV?    In the distant past I believe it was the 
>>>>>>> province of
>>>>>>> the old GPO,  but who would it be today?
>>>>>>
>>>>>> It's is probably not worth it. If it's not there now, they wont
>>>>>> find anything.
>>>>>>
>>>>> But who would *thet* be who could investigate it these days?
>>>>>
>>>>>> It could have been a powerful walkie talkie type setup somewhere
>>>>>> very close as well.
>>>>>>
>>>>> It seemed to be on and off most of yesterday evening - well up to
>>>>> midnight that I know of -  and early this morning.  That's why I
>>>>> wondered if it could be associated with some domestic heating
>>>>> system.   Not mine since I have gas fires and no electris other
>>>>> than a timer switched immersion heater and electric convector heater,
>>>>> neither of which were on at the times quoted. Not happened again
>>>>> since ,  so all digits crossed that it won't happen again,    but I
>>>>> bet it does.
>>>> The answer is:
>>>> http://www.ofcom.org.uk/complain/inter/tv/intbr/
>>>>
>>>> George
>>> Thanks George that's what I was after.
>> Let's hope they don't find anything on your premises that's causing
>> the problem.
>> You have to agree up-front to pay them fifty quid if they find it's
>> down to you!
>>
>> George
> 
> I'm pretty certain it nothing I have in my house that is causing it.   Only 
> electrical devices that were on,  at the time were fridge,   router,  usual 
> lighting,  a couple of pond pumps (30 foot from the house - and they're on 
> 24/7),  TV,  Sky digital set top box, Hi-fi and VCR, all  in stand by mode.


OK. it does sound like mains borne interference then of some sort. And 
pretty vicious to screw up a TV.

One other thing you can do is find an old MW capable cassette recorder 
ghetto blaster type thing, and if it happens, tune to MW between 
stations. The sound you get is helpful: unsuppressed motors make a 
crackling whine: an arc welder makes a sort of vicious crackle..and an 
arcing contact is somewhat similar, though usually a bit higher in 
general tone.