Caroline County, Virginia Request for Proposals Project 25 Radio ...

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UHF/700 MHz P25 Radio Communications SystemRequestion for ProposalsGlossaryCaroline County, VirginiachannelcommunicationsconnectivityconventionalcoverageCSSIDAQdBDCdigitalDTMFEIAEMIencryptionERPThe route through which a message is sent. A connection betweeninitiating and terminating nodes of a circuit. A single path provided bya transmission medium via an electrical separation, such as byfrequency or frequency pairs.Information transfer among or between users. In public safetycommunications, the ability of public safety agencies to talk acrossagencies.The complete path between two terminals.A radio system with dedicated, single-purpose channels (can beshared between several users with different operational needs; e.g.,fire and police). A user must select the specific channel to be used.The geographic area included within the range of a wireless radiosystem.Console Subsystem InterfaceDelivered Audio QualityDecibelDirect CurrentRadio transmission method that replaces analog systems andtransmits its signal in binary 1's and 0's the same as a computer. Onemajor difference is that digital signals do not degrade gradually theway analog does as the distance between the transmitter andreceiver increases.Dual Tone Multi-FrequencyElectronic Industries Alliance (publisher of standards)Electromagnetic InterfaceThe reversible transformation of data from the original (plain text)format to a difficult to interpret format as a mechanism for protectingits confidentiality, integrity and sometimes its authenticity. Encryptionuses an encryption algorithm and one or more encryption keys.Effective Radiated PowerMay 27, 2011 Page 95 of 134
UHF/700 MHz P25 Radio Communications SystemRequestion for ProposalsGlossaryCaroline County, VirginiaFAAFATFATPFCCFederal Aviation AdministrationFactory Acceptance TestFactory Acceptance Test PlanFederal Communications Commissionfirst responders The first professionals called to an incident or emergency thatprovides immediate support services during prevention, response,and recovery operations.frequencyfrequencybandsThe number of cycles or events of a periodic process in a unit oftime.The spectrum of transmission space where mobile radio systemsoperate in the United States. They are (from low to high):High HF 25-29.99 MHzLow VHF 30-50 MHzHigh VHF 150-174 MHzLow UHF 450-470 MHzUHF TV Sharing 470-512 MHz700 MHz 764-776 & 794-806 MHz800 MHz 806-869 MHz2.4 GHz4.9 GHzFRUGFIGUIHVACHzIEEEField Replaceable UnitsGround Fault InterruptGraphical User InterfaceHeating Ventilation and Air ConditioningHertz (same as cycles per second)Institute of Electrical and Electronic EngineersMay 27, 2011 Page 96 of 134
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Caroline County, Virginia Request for Proposals Project 25 Radio ...

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