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<br />, <br /> Warnin System <br />Siren/Alarros <br />Radio <br />-- <br />TV - Cable <br /> - - <br />Personal Notification <br />Loudspeakers and <br />P.A. Systems <br />- <br /> I <br /> I <br />Ton~-Alert Radio <br /> I <br />andipagers <br /> i <br /> ! <br /> n <br /> '-- <br /> <br />strengths Weaknesses <br />Can provide rapid alert to roost Expensive, roaintenance problems, <br />populations. coverage probleros, public indifference, <br /> difficult to hear in buildings and <br /> subject to false alarros and equiproent <br /> failures. <br />Can reach a large nurober of Covers areas not at risk, reaches only <br />people during non-sleeping sroall portion of population during <br />hours. night-tiroe hours and inconsistent <br /> priority. given to warning broadcasts. <br />Reaches a large nurober of Covers areas not at risk, is of little <br />people, particularly in the value during sleeping hours. If cable <br />evening hours.' Can provide override only is used, non-subscribers <br />both audio and vigeo roessages will not be r~~9ped. <br />High level of credibility and Tiroe consuroing, requires high <br />very targeted. cororoitroent of many vehicles and <br /> personnel. Risk of exposure to alerting <br /> personnel. <br />Particularly useful when Often difficult to hear or understand <br />people are asleep. t-1obile roessages - inability to confirro <br />units can be targeted in eroergency is high. Requires high <br />high risk areas. Effective cororoitroent of personnel and roobile <br />in public buildings where units if available. <br />P.A. Systeros exist. <br />Quick and specialized roes sage High cost and maintenance probleros, <br />delivery, round-the-clock availability during power failures and <br />effective coverage. liroited utility for warning people <br /> outdoors. <br /> r) n <br /> . '.: "....-....~ <br /> ,~. ' ; - .J '-, <br /> '-,:,/ ':- <':1" <br />