LASD - Pursuit of Kidnapping Suspect (5:31) Los Angeles County Sheriff's deputies pursue a possible kidnapping suspect. The vehicle pursuit quickly turns into a foot-pursuit on the freeway where the suspect is taken down. A scanner is a radio receiver that can automatically tune, or scan, two or more discrete frequencies, stopping when it finds a signal on one of them and then continuing scanning when that frequency goes silent. Many scanners cover the non-broadcast radio bands between 30 and 951 MHz using FM, although there are models that cover more of the radio spectrum and use other modulation types. Early scanners were slow, bulky, and expensive. Today, modern microprocessors have enabled scanners to store thousands of channels and monitor hundreds of channels per second. Recent models can follow trunked radio systems and decode APCO-P25 digital transmissions. Both hand held and desktop models are available. Scanners are often used to monitor police, fire and emergency medical services. Scanners developed from earlier tunable and fixed-frequency radios that received one frequency at a time. Non-broadcast radio systems, such as those used by public safety agencies, do not transmit continuously. With a radio fixed on a single frequency, much time could pass between transmissions, while other frequencies might be active. A scanning radio will sequentially monitor multiple programmed channels, or search between user defined frequency limits. The scanner will stop on an ...

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Lásd - Continued Armed Suspect - (12:18) Members of the Los Angeles County Sheriff to pursue one armed with a carbine rifle with a hostage by the road cut of the earth, when the chase turns into an outlet hostages, while "Sam" (Sargent) units to respond "Code-3" (lights and siren) with assault rifles AR-15. A scanner is a radio receiver that can automatically detect or scan, two or more discrete frequencies, stopping when it finds a signal A scanner is a radio receiver that can automatically detect or scantwo or more discrete frequencies, stopping when it finds a signal on one of them, and then continuing scanning when that frequency is silent. Many scanners cover the non-band radio propagation between 30 and 951 MHz with FM, but there are models that cover most of the radio spectrum and use other modulation types. Early explorers were slow, cumbersome and expensive. Today, modern microprocessors have enabled scanners to store thousands of channels and monitor hundreds of channels per second.Newer models can monitor radio systems with shared resources and decode APCO-P25 digital transmissions. The two models of laptop and desktop are available. Scanners are often used to monitor police, fire and emergency medical services. Scanners developed from earlier tunable and fixed frequency radios that received one frequency at a time. The non-distribution systems of radio, such as those used by public safety agencies do not transmit continuously. With a fixed radius on a single frequency, much time can pass...

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