Co-ordination of a power-line carrier network

RECENT EXPANSION in generating capacity of the Hydro-Electric Power Commission of Ontario, together with the policy of centralized control, has necessitated a power-line carrier channel mileage of approximately 16,000 operating over 2,600 circuit miles of the power network. Complexities in operating conditions and requirements, and a limited frequency spectrum, 50–200 kc, require quantitative measurements and consideration of the more important transmission factors in the co-ordination of a power-line carrier network.