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Well gentlemen, thank you and i am pleased, very pleased and impressed with what you have said.Les, it is the MTS system and/ or the transformer running it, as when i disconnect them it stops. I have tried to read the current already and i only have a 10 A digital meter and it isn't enough to register on that, in either section.Incidentally the 2V bit has risen to 6V.I have done further tests and ruled out interference from the reversing loop.Kevin, i have always admired you (an Aussie joke) and now i know why, because what you have said is exactly what i have come to conclude myself. A few things along this track to do with ballast, some Aussie quarry fines are magnetic i have a magnetic spirit level and granules stick to it all the time. But if this was the culprit i would have this problem all over and i do not htink that i do!I consulted my step son who has done geology as a subject, at the Uni of NSW and he reckons granite here in Australia is not magnetic. But the internet tells me otherwise of granite in general especially from China. Evidentally some people want it and others do not, there is even a company that will advise you on how to handle ferrouse pirites in granite. I also have the idea that the grayer the granite the more pirites it has and this stuff is very grey and shows some pink when wet. Iam going to find out if where the granite comes from; if they will tell the truth, it could well be cheap Chinese granite.Action at this time; I am convinced it is what you said Kev, its a combination of ballasts, the magnetic fines with the ferrous pirites in the granite that is doing it. If the LGB detection module works as it is, i will forget about it. if it doesn't i will pull the whole thing up do some experiments and re lay the track about 8 m of it.Well done fellas.Rgds ian
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