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Digital mobile radio (DMR) is a digital radio standard for voice and data transmission in non-public radio networks.It was created by the European Telecommunications Standards Institute (ETSI), [1] and is designed to be low-cost and easy to use.
The Baltimore Police Department began using the devices in 2007. [2] The New York City Police Department has used the devices since 2008. [3] Initially, the use of stingray phone trackers was a secret, due to a number of non-disclosure agreements between individual police departments and the Federal Bureau of Investigation. [4]
Local and state police have cell site simulators in California, Texas, Minnesota, Wisconsin, Michigan, Illinois, Indiana, Tennessee, North Carolina, Virginia, Florida, Maryland, and New York. [4] The police use of cell site simulators is unknown in the remaining states.
Several hand-held Project 25 radios used around the world. Project 25 (P25 or APCO-25) is a suite of standards for interoperable digital two-way radio products. P25 was developed by public safety professionals in North America and has gained acceptance for public safety, security, public service, and commercial applications worldwide. [1]
Linking multiple repeaters to enable a repeater outside the communications range of the handheld or mobile device to retransmit messages violates sections 95.1733(a)(8) and 95.1749 of the Commission's rules, and potentially other rules in 47 C.F.R. Repeaters may be connected to the telephone network or other networks only for purposes of remote ...
The New Hampshire U.S. State Police were the first to test and use a conventional ASTRO Digital Solutions system. They began testing of ASTRO portable radios, mobile radios, base stations, dispatch consoles, and a wide-area system in December 1992 for State Police Troop A, and completed a phased installation several years later. [ 8 ]
Virginia State Police Round Up 2 Cute Runaway Donkeys and Ruin All Their Fun. Eve Vawter. June 28, 2024 at 11:15 AM. Debra Anderson/Shutterstock ... — VA State Police (@VSPPIO) June 24, 2024.
Land mobile radio systems are widely used by the military. Separate bands in the radio spectrum are reserved for their use. This includes portions of the 30-50 MHz band, and the entire 100-100, 100-100.8, and 540-2400 MHz bands, plus shared use of the 170- 170 MHz band.