Transactions section: Preprint of corresponding pages from the current annual AIEE transactions volume

MANY utility engineers interested in increasing the applications of power-line carrier on their systems are confronted today with the difficult problem of finding space for additional channels in an already crowded carrier spectrum. This is a problem, not only for large utilities which have extensive carrier systems of their own, but also for smaller companies interconnected into large groups in which the total number of carrier installations is large.