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<br />OOQ3{9 <br /> <br />. <br /> <br />. <br /> <br />. <br /> <br />A VHF Synthe.ized R.dio provide. multiple frequencies from a <br />.ingle unit without the need to order or .rock different radio. <br />for different frequencie.. Maintenance and .pare. .re greatly <br />.implified with a univer.al ~ radio. <br /> <br />· Stream gauge. can be .et to tran.mit at mulriple interval. (from <br />1 through 9) of the ba.ic 0.01 foot re.olution of tbe .haft <br />encoder. Thi. allow. for Iveraging of turbulent water .urface. <br />and provide. a way to reduce radio frequucncy conge.tion during <br />heavy .torm period. in den.e networka, if required. <br /> <br />. <br /> <br />· The ~ndar 585A ~ta Tran.mitter provide. a batter, warning and <br />inhibit feature to avoid unnece..ary 10.1 of data due to batter, <br />volt.ge deteriot.tion. The ba.e .tation provide. an alarm when- <br />ever the voltage fall. below 11.8 volt. and allow. time for the <br />batter, to be in'pected and replaced or rech.rled, if nece..ar,. <br />In addition, to prevent battery dmDage, the Data Tran.mitter will <br />be inhibited if the barter, voltage fall. below 11.4 volt. in <br />order to prevent deep di.charging of the batter,. <br /> <br />. <br /> <br />The Handar 585A ~ta Tran.mitter will rran.mit at either JOO or <br />1200 baud data rare.. Thu., it i. compatible with all ezi.tinl <br />JOO baud Alert .,.tem.. In addition, however, the unit can be <br />.witched to 1200 baud, which i. a propoled new baud rate now <br />under con.ideration by the Local Flood Warninl S,.tem Technical <br />Working Group in order to reduce frequency conle.tion in den.e <br />network.. Thu., the Handlr or will not be ob.oleted by propoled <br />chlnge. under conlideration. <br /> <br />. <br /> <br />The Hlnd.r 544 Store and Forward Repeater require. only one <br />frequenc" rather tban the two required b, conventional voice <br />repeatera. Thil eliminate. the need to obtain an additional <br />frequenc" which arc u.uall, in .hort .upply. Al.o, dual anten- <br />na. or ezpen.ive duplezer., to .eparate tran.mit and receive <br />frequencie., arc not required a. for a conventional repelrer. <br /> <br />· The Handar 548 receiver. operate concurrentl, at both JOO aad <br />1200 blud ratea. Thu" it can operate within an ezi.tinl JOO <br />baud .,.tem ADd al.o with a miz of ll00 b.ud tran.miter.. The <br />receiver al.o ha. an LED di.pla, to provide network .tatu.: <br />percentale. of qualit" noiae, and Ioadinl are di.pla,ed, which <br />arc ver, helpful in deteauininl if the .,.tan i. delradinl due to <br />too man, .en.or., noiae, etc. <br /> <br />· Environmental te.tinl of ~ unit .bipped from Handar ia <br />a Itandard operatinl te.t. lOita are te.ted to operate at -20 C <br />and +50 C before aay unit i. ahipped. <br /> <br />. <br /> <br />~ndar weather .enlor. can be interfaced to the Alert .y.tem <br />through u.e of the optional analol interface board. up to 16 <br />Inalog len.or. plus one wind .peed .en.or can be interfaced. <br />~ndar'. wind .peed and wind direction .en.or. have been te.ted <br />by the NWS Te.ting and Evaluation Centtr in Srtrlinl, Va. <br /> <br />4 <br />