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Rule Part

47 C.F.R, Part 101

Radio Service Code(s)CF - Common Carrier Fixed Point-to Point Microwave ServiceMG - Private Operational Fixed Point-to Point Microwave ServiceMM - Millimeter Wave 70-80-90 GHzMW - Private Operational Fixed Point-to-Point Microwave - Public Safety Service

Microwaves are very short waves in the upper range of the radio spectrum used mostly for point-to-point communications systems. Much of the technology was derived from radar developed during World War II. Initially, these systems carried multiplexed speech signals over common carrier and military communications networks; but today they can handle all types of information, e.g. voice, data, facsimiles, and video, in either an analog or digital format.

Over the years, these systems have matured to the point that they have become major components of the nation's public switched telephone network. Private organizations use them to satisfy internal communications requirements and to monitor their primary infrastructure. As the nation’s cellular and personal communications systems grow, point-to-point microwave facilities, serving as backhaul and backbone links, enable these wireless systems to serve the country’s less populated areas on an economical basis.

Today's technology enables private users to employ microwave frequencies to operate and control equipment at remote sites, such as switches and valves associated with the operation of oil and gas pipelines, to gather data related to services, control traffic signals and to obtain toll data from moving vehicles, as well as other monitoring functions.

sort byAbout Fixed Microwave Services

Early technology limited the operations of these systems to radio spectrum in the 1 GHz range; but due to improvements in solid state technology, commercial systems are transmitting in ranges up to 90 GHz. In recognition of these changes, the Commission adopted rules allowing the use of spect