A network device includes an interface configured to be coupled to a transmission line that simultaneously carries AC power and RF modulated content; content processing circuitry configured to route content communicated via the transmission line to one or more secondary network devices; and a component coupled to the interface to couple and decouple RF modulated content together with AC power communicated over the conductor extending the RF spectrum to 3 GHz. The component includes a core. The core includes a first portion having a conical geometry and a second portion having a cylindrical geometry. A wire makes a plurality of turns around the core starting from the first portion and ending in the second portion.

A network device includes an interface configured to be coupled to a transmission line that simultaneously carries AC power and RF modulated content; content processing circuitry configured to route content communicated via the transmission line to one or more secondary network devices; and a component coupled to the interface to couple and decouple RF modulated content together with AC power communicated over the conductor extending the RF spectrum to 3 GHz. The component includes a core. The core includes a first portion having a conical geometry and a second portion having a cylindrical geometry. A wire makes a plurality of turns around the core starting from the first portion and ending in the second portion.