US Cable Support > RCN > RCN telephone, really bad hum

reply to thrakkerzog

Re: RCN telephone, really bad hum

I don't know how RCN does it in Lehigh, but here in very highrise Manhattan, they just *can't* have hum in their equipment. It's all fiber to a cage in the basement.

OTOH, partially grounding one side of the metallic pair *inside* your premises can sure do it. Hum is one of the classic symptoms of that. All it takes is a pinhole insulation break and some leakage to a wet timber or beam.

If you have copper to the street, could be there, too. I presume RCN cops to responsibility for that.