Ahmad Lee Khamsi, a Latin American cable executive, is one of the first customers to adopt the technology.

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Perhaps more interesting was the presence of executives from Monster Cable, including founder Noel Lee.

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In his six years at sister cable network ABC Family, Lee, 50, delivered ratings growth every year and has proven a knack for luring younger female viewers, a particularly desirable demographic for deep-pocketed advertisers.

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Mr Lee added that an as-yet unknown length of power cable was planned to go underground around Meifod, near Welshpool.

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