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The Dutchess County (DC) Fire and EMS radio system has 16 channels, comprising 9 UHF frequencies, that uses continuous tone coded squelch system (CTCSS) to eliminate outside interference, and Radio repeater base stations to enhance and extend the mobile communications. The 16 channels are divided into five main categories; Dispatch, Response ...
An Icom IC-R5 hand-held scanner A GMRS radio that also has scanning capabilities. A scanner (also referred to as a radio 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 to scan other frequencies when the initial transmission ceases.
The following is a list of the FCC-licensed radio stations in the United States Commonwealth of Massachusetts, which can be sorted by their call signs, frequencies, cities of license, licensees, and programming formats.
The primary purpose of this type of system is efficiency; many people can carry many conversations over only a few distinct frequencies. [1] Trunking is used by many government entities to provide two-way communication for fire departments, police and other municipal services, who all share spectrum allocated to a city, county, or other entity ...
United States. [] In the United States, response codes are used to describe a mode of response for an emergency unit responding to a call. They generally vary but often have three basic tiers: Code 3: Respond to the call using lights and sirens. Code 2: Respond to the call with emergency lights, but without sirens.
This article is a list of the emergency and first responder agencies that responded to the September 11 attacks against the United States, on September 11, 2001.These agencies responded during and after the attack and were part of the search-and-rescue, security, firefighting, clean-up, investigation, evacuation, support and traffic control on September 11.
Coaxial cavity RF filter at 2 meter repeater. An amateur radio repeater is an electronic device that receives a weak or low-level amateur radio signal and retransmits it at a higher level or higher power, so that the signal can cover longer distances without degradation. Many repeaters are located on hilltops or on tall buildings as the higher ...
Radio repeater. A radio repeater is a combination of a radio receiver and a radio transmitter that receives a signal and retransmits it, so that two-way radio signals can cover longer distances. A repeater sited at a high elevation can allow two mobile stations, otherwise out of line-of-sight propagation range of each other, to communicate. [1]