Abstract: A method and system for communicating information between subscribers over power transmission lines which normally convey electrical power to a plurality of diverse electrical sites for providing electrical power to electrical devices disposed at these diverse electrical sites. The subscribers on the communication network are located at these electrical sites. The electrical power conveyed over the power transmission lines is in the form of electromagnetic radiation which has an electrical field component and an associated magnetic field component. The information, such as telephonic voice communication or other data, is transmitted in the magnetic field component of the electromagnetic radiation carried over the power transmission line, such as by exciting the field with a MASER, in order to enable communication between the subscribers at the various electrical sites.