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Hello, riptide and murraymints
I have had tinnitus (hissing type) for about 3 years and can handle it well. I had wondered if the hum was an increase/variation in the tinnitus, but that doesn't seem to be the case, as visitors can hear it too - but only after I mention it.
There is no substation near me, just a BT connection box on a pole nearby.
It's really frustrating. At the moment, I use a fan to mask the hum, but that's obviously not practical in winter.
I read once that the hum has been reported in the Bristol area, but I'm nowhere near there.
Murraymints - what is LBC?
Very interesting, this whole hum thing.