Click to see specific topics:   MILLIMETER SERVICE (LMDS 38 GHz) Various commercial two-way broadband digital services exist in the upper frequency spectrum above 10 GHz.  These services include: - Local Multipoint Distribution Service (LMDS) at 27.5 to 28.5 and 31 GHz (FCC Part 101.1000); - 10, 18 and 39 GHz (Various FCC Part 101 Rules) Almost all millimeter services have limited base station coverage areas (with typical coverage distances of 1 to 3 miles) necessitating large multi-site systems in order to serve the larger metropolitan areas.  Because the design of these services are rather complex, DC uses sophisticated software tools to meet a client's needs in the development of these systems.   Important Millimeter System Points -Existing operators control the licensing rights for most of the currently licensed millimeter services throughout the United States (and various US territories).  The newer services (LMDS, 39 GHz) are awarded by FCC auction. -Millimeter services are limited by sever signal fading, necessitating complex multi-site system designs.  Current technology typically requires line-of-sight (LOS) path links from the base station to customer for successful service.  Newer non line-of-sight (NLOS) technologies are being developed, which will greatly improve the reliability of service to these systems. -Most millimeter services are in their infancy (less than 10 years in existence) as commercial services.  Many service providers are having difficulty developing successful business plans.  The success of these services should improve as the technological advances in spread spectrum and NLOS (such as OFDM) are fully developed.    Click (Here) for an easy to print downloadable PDF brochure of all our services.