Land Mobile Radio System

Land Mobile Radio System (LMRS) is a term that denotes a wireless communications system(s) intended for use by terrestrial users in vehicles (mobiles) or on foot(portables). Such systems are used by emergency first responder organizations, public works organizations, or companies with large vehicle fleets or numerous field staff. Such a system can be independent, but often can be connected to other fixed systems such as the public switched telephone network (PSTN) or cellular networks. Also called Public Land Mobile Radio or Private Land Mobile Radio.

The Land Mobile Radio System is also the United States Department of Defense's new state-of-the-art communication system. Government contractors, such as Thales, Harris, and Motorola, provide the latest in LMRS technology to the government and military.

In November 2005, many automatic garage doors in Ottawa, Canada, have suddenly, [http://www.cbc.ca/ottawa/story/ot-garageopen20051104.html] and strangely, stopped working, due to a powerful radio signal that appears to be interfering with the remote controls that open them. [http://www.cbc.ca/ottawa/story/ot-signal200511.html]

In the Summer of 2004, Garage door operators noticed similar phenomena around U.S. military bases. The strong radio signals on the 390-megahertz band simply overpower the garage door openers. One technician likened it to a whisper competing with a yell. [http://www.signonsandiego.com/uniontrib/20051208/news_lz1n8readthis.html]

:::: -- "Government Accountability Office report GAO-06-172R [http://www.gao.gov/docdblite/details.php?rptno=GAO-06-172R] "