fhaber
Enhanced For Lynx
join:1999-11-23
New York, NY
 ·RCN CABLE
| reply to Clearpix
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. |
