Broadband over power lines (BPL) coupling system

An inductive coupler for providing an interface between a power line and a communication device which communicates via the power line, wherein the power line operates at a potential between four and 140 kilovolts while accommodating a current having a frequency between 45 and 65 hertz, and wherein the communication device operates substantially at ground potential,

• said inductive coupler comprising:
• a split ferrite core;
• a clamping mechanism allowing the inductive coupler to clamp around the power line or around a utility line connected to the power line;
• and
• at least one lead for communicatively connecting the inductive coupler to the communication device,
• wherein the inductive coupler forms an air gap when the inductive coupler is clamped,
• wherein the air gap is substantially filled with plastic,
• wherein a dimension of the air gap is such as to substantially minimize communication frequency noise caused by the power line.
• wherein the coupler is an insulated coupler;
• and
• wherein insulation of the insulated coupler is comprised of the plastic that fills the air gap.