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Thanks for replying, dzug.
The 2 masts are very recently erected and I'm still paying at Band F, �1775 a year, so nothing has been deducted. Also, the properties like mine for sale nearby are not selling or have had sales fall through with the reasons given that the masts are too close and people are worried about health risks for their children.
I'm sure lots of other home owners are in the same boat over this, with the large numbers of masts being erected all the time in populated areas, near schools and homes, etc. So I thought I'd ask other peoples' experiences.
Thanks again.