Communication services using the low voltage distribution network

The extension of the operation of power line carrier systems from the Kilohertz to the megahertz frequency range of operation introduced a new dimension to the operation of these systems. Initial investigations using the higher frequencies commenced in the early 1990's in many countries but primarily in the U.S.A and Europe. Data transmission and reception is not confined to well prescribed frequencies but rather to a frequency band in the high frequency range of 1MHz to 10MHz, although a few experiments are being carried out at frequencies as high as 30MHz. Operating in these frequency bands provides an increase in bandwidth, and the consequent increase in capacity for new communication services. These new services include broadband communication services, Internet services, ISDN Telephone services, and Video on demand.