So are you saying that your issue was because of parallel power and telephone cables attached to your wall?

If so, is that REIN or just the normal advice to separate those type of cables?

REIN is "Repetitive Electrical Impulse Noise", which covers all forms of electrical noise that is induced repetitively. It can indeed be caused by the parallel cables.

BTW's advice on REIN

I doubt if the transmitter is causing direct interference; but could it be arising from any feeder cables to it.

Our TV Tx is about 9 Kms in a straight line, with a total power of 45 KW - and I have not observed any problems relating to it, of this nature.

I upgraded to 40/10 VDSL in June 2014; shortly about August/September, I overheard the mobile side of a Public Service communication, whilst using my tower PC of the period.

From the one-sided, on the street, conversation, I picked up details such as names, very exact location etc.

This was about 23 KMs (13.4 Miles) in a straight line.

I'm very doubtful whether it was directly the mobile radio in use at the scene; presuming it being some form of cross-talk within the BT system.

------------

Some months later, I had a some-what similar experience; but this time it was the sound of a local radio station "somewhere".

In reply to a post by eckiedoo:

I doubt if the transmitter is causing direct interference; but could it be arising from any feeder cables to it.

I understood the original poster was saying that the interference was affecting BBC 5 Live AM reception - in other words, the transmitter was being interfered with rather than being the interferer.

Broadcast transmitters are usually amongst the best installations there are for spectral purity because of the high signal strengths involved. If there is any evidence of poor on-air signal, Arqiva will likely be interested.

In reply to a post by eckiedoo:

I upgraded to 40/10 VDSL in June 2014; shortly about August/September, I overheard the mobile side of a Public Service communication, whilst using my tower PC of the period.

From the one-sided, on the street, conversation, I picked up details such as names, very exact location etc.

This was about 23 KMs (13.4 Miles) in a straight line.

I'm very doubtful whether it was directly the mobile radio in use at the scene; presuming it being some form of cross-talk within the BT system.

It sounds like a local analogue mobile installation broke through somehow. I'd guess at the interfering mobile being very close to your location. I'd also think it more likely that the breakthrough was the RF energy getting directly into your computer speakers (or the signal cable between the sound card and speakers), which often aren't the greatest performers in the presence of a fair amount of RF energy. Resolving audio is a little curious, though, as almost all analogue PMR is FM, which is unlikely to be trivially demodulated (usually you just hear a thump at key down and another at key up).

I would be rather surprised if sufficient RF energy could travel down a BT cable, into your computer and somehow to an AF amplifier sufficient to be demodulated, but it's possible, especially if there was a reasonable amount of coupling between the BT and speaker cables.

In reply to a post by WWWombat:

REIN is "Repetitive Electrical Impulse Noise", which covers all forms of electrical noise that is induced repetitively. It can indeed be caused by the parallel cables.

BTW's advice on REIN

Thank you so much for that link wombat A very interesting read about how they perceive it and there admission that in the case of 3rd party generation it's practically insoluble! I quote "Where the suspected source of REIN is third party this can be more problematic.
The success rate in these cases is typically less than 10%."

David

Unfortunately, you have replied on the wromg line and postings.

I can assure you almost absolutely (without being there) that the Mobile was about 23 KMs (15 Miles) away; as not only did the general one-side conversation, state clearly the road name - the only road of that name in a large area; but the speaker gave the location as being immediately outside a major garage chain, to make it easier for other Emergency Service Vehicles to find the location - so very clear, very concise.

The garage chain is readily confirmed using the given road name, in Google Earth and Street View.

Like yourself, I would not expect a typical ESV Mobile to cover such a distance, with various significant hills, both directly in line; and also if more devious routes are considered - even ore hills.

Unlikely to be Skip or Reflection, leaving the old POTS/BT inherited one as being possibly involved.

The only major group of radio masts near there involved with the ESV Radio Services is almost in line. about 4 KM from the Mobile location - BUT keeping in mind that these would be transmitting the UNHEARD responses from the Controllers; and very unlikely to be Repeating the very low-power MOBILE messages which I HEARD.

hence my thought turning to the former POTS Exchange/BT inherited building.

But even that does not seem to fit in.

It may have been somewhere in the hill-top main Masts to Controller Offices, probably via BT links, that some form of cross-talk/leakge occurred.

In reply to a post by David_W:

In reply to a post by eckiedoo:

I doubt if the transmitter is causing direct interference; but could it be arising from any feeder cables to it.

I understood the original poster was saying that the interference was affecting BBC 5 Live AM reception - in other words, the transmitter was being interfered with rather than being the interferer.

Broadcast transmitters are usually amongst the best installations there are for spectral purity because of the high signal strengths involved. If there is any evidence of poor on-air signal, Arqiva will likely be interested.

In reply to a post by eckiedoo:

I upgraded to 40/10 VDSL in June 2014; shortly about August/September, I overheard the mobile side of a Public Service communication, whilst using my tower PC of the period.

From the one-sided, on the street, conversation, I picked up details such as names, very exact location etc.

This was about 23 KMs (13.4 Miles) in a straight line.

I'm very doubtful whether it was directly the mobile radio in use at the scene; presuming it being some form of cross-talk within the BT system.

It sounds like a local analogue mobile installation broke through somehow. I'd guess at the interfering mobile being very close to your location. I'd also think it more likely that the breakthrough was the RF energy getting directly into your computer speakers (or the signal cable between the sound card and speakers), which often aren't the greatest performers in the presence of a fair amount of RF energy. Resolving audio is a little curious, though, as almost all analogue PMR is FM, which is unlikely to be trivially demodulated (usually you just hear a thump at key down and another at key up).

I would be rather surprised if sufficient RF energy could travel down a BT cable, into your computer and somehow to an AF amplifier sufficient to be demodulated, but it's possible, especially if there was a reasonable amount of coupling between the BT and speaker cables.

Once again my thread is polluted by irrelevant rubbish!! Please make sure you know what you are talking about before posting here and you are referencing the specific issues I raised in this thread.

As for the actual line in question it has now been running at a Tsnr of 4db for 2 weeks without break, the REIN is still present but reduced in amplitude to <2.5dB mostly by the drop wire replacement and re-routing of the same. The source of the REIN remains unidentified, it still blots out R5live and the BBC's response was switch to DAB. So it appears NOBODY is responsible for sorting out REIN issues despite the fact we are under an onslaught of non-compliant Chinese products (personal experience) making REIN an increasing problem.

People are trying to get involved and help. There must be someone you can pay handsomely to fix your issue.

If you're not satisfied with some of the suggestions then ask to get the thread locked and move on.