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<br />OOJ3':8 <br /> <br />1011 of data due to interference, the data is Dot 10lt but only delayed <br />becaule on the next tunsminion the "alue tranlmitted, rainfall for exam- <br />ple, indicates a milline count, which is accounted for by the Base Station. <br /> <br />. <br /> <br />Twenty (20) VHl' radio frequenciu and deht (8) ndio frequenciu hue <br />been aSligned for hydrometeorological data acquilition by the Federal <br />Collllllunicationl Collllllinion (Fa::) in the Ulited Statu. These frequencies <br />cover the range from 169.42' to 171.92' Mhz and 406.025 to 412.77' Mhz. <br />Other nearby frequencies may aho be avail able for use. The Handar <br />Synthelized Radio Tranlmitter coverl the range from 150 to 17' Mhz and the <br />UHF radio from 405 to 41' Mhz. <br /> <br />Thu e f requenciu are used under the Iponsorship of a U.s. Federal <br />agency, such al the National 1!7eather Service, or any other federal or .tate <br />aeency re.pon.ible for acquirineweather or hydroloey data. The National <br />1!7eather Service provides frequency coordination and license uai.tance <br />throush their River Foreca.t center. located throughout the U.s. or throush <br />the Office of HydrololY in Silver Speine., Md.. <br /> <br />For additional al.i.tance on the in.tallation aad oper.tion of COIlllllU- <br />nity Flood 1!7arning System., conlult the public.tion, ~uidelinu <At Comnu- <br />nity Local Flood 1!7arnins and Re.ponle System." publi.hed in Augult 1985 by <br />the Hydrology Subcollllllittee of the Federal Intensency Advi.ory Collllllittee on <br />1!7.ter Dat.. Copiu are .vailable from the National Weather Service, Office <br />of Hydrology, Silver Spring., Md. <br /> <br />. <br /> <br />The H.nd.r B..e Station providea the mean. to receive the d.ta, <br />collect, Itore, procen, and di.play it. The Bue Station cOOli.ta of an <br />IBM PC xr with. 20 Meg.byte hard di.L Hlndar'. Enhanced Alert Softw.re <br />running on. pulti-talking oper.ting .y.temprovidel . true multi-ta.king <br />environment. All reporta can be diaplayed while concurrenrly collect ins <br />data from raDOte .ite.. <br /> <br />The Handar Enhanced Alert Softw.re providel many function. which are <br />more completely de.cribed in chi. propo..I. Among the fe.rure. included <br />are the .bility to di.pl.y precipit.tion m'pl or map' of any other type of <br />.en.or with the v.lue of the .en.or di.pl.yed and upd.ted in real-tu.c. X- <br />y lraph. can .lao di.play, for nample, watet level or .trum flow rare <br />ver.u. tUDe. The.e Ir.ph. c.n be dr.wn fram . choice of up to 16 color.. <br />The .oftware .lao .llow. .ettina in alarm limits '0 that when pruet limita <br />for each .en.or .re eaceeded, an alana action or me....e i. di.played .t <br />the ba.e .t.tion monitor, <br /> <br />The Handar Al ert >>NIS provide. many future. of bencH t to the ulCr of <br />the .y.rem: <br /> <br />· The Model 444B Tippins Bucket i. manuf.ctured from a one piece <br />C.lt aluminum part in order to prevent crack. from freezing and <br />any deterior.tion which milht occur from a .oldered, f.bric.ted <br />part. <br /> <br />. <br /> <br />The Model 436A Shaft Encoder for .tream gauging i. m.de of only <br />one moving part for utmolt reliability. There are no reed relay. <br />or other movinl parta that can eventually wear out. Accuracy and <br />resolution i. 0.01 feet. <br /> <br />. <br /> <br />3 <br />