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Federal's SiraTone system <br />has been developed for <br />applications requiring both <br />siren warning sound and <br />voice communication, and for <br />emergency operation <br />regardless of primary power <br />outages. Its electronically - <br />produced signals are <br />identical to that of a <br />Thundet bolt penetraiing <br />electromechanical siren. Two <br />models are available —one <br />omni-directional and one <br />rotating —each capable of <br />producing up to seven <br />different signals plus voice. <br />Sirabne Systems <br />The SiraTone system consists <br />of a high pov:cr speaker <br />array, a control amplifier/ <br />battery cabinet which <br />provides 30 minutes <br />of continuous full signal <br />operation independent of <br />,rimary power. Activation of <br />EOWS'LK (Siralok option) <br />is available for DTMF Radio <br />Control Systems to prevent <br />unauthorized activation. <br />This individual DTMF Radio <br />Address will enable cr <br />disable the receivers at <br />each siren site. <br />both siren sound and public <br />address mez:;a6zs can be by <br />Federal's 31r2troi radio <br />control, a pre -installed <br />option (see page 11), by <br />Push-button switches <br />connected through landlines, <br />or by direct access. <br />Installation cost is low; no <br />additional electrical services <br />are required. <br />The control cabinet <br />EOWS'C/B contains a <br />diagnostic testing circuit that <br />allows system checkout <br />without alarming the public, <br />a command verification <br />digital counter, signal timer <br />adjustable from two <br />.to five minutes, signal <br />generators, amplifiers, <br />automatic battery charger, <br />optional speaker position <br />control circuitry, and manual <br />siren controls in a NEMA 4 <br />enclosure. It will operate ir a <br />temperature range from <br />-350C to +75°C. <br />Two mainte, -free lead - <br />calcium deel.. ., :le, <br />rechargeable batteries are <br />enclosed within a NEMA 3R <br />cabinet. The batteries have a <br />reserve capacity to operate <br />even the largest system a <br />minimum of 30 minutes. <br />Rotating high speaker <br />models, use highly -reliable <br />freeze- and rust -resistant <br />mechanisms developed for <br />rotating signs, designed to <br />eliminate rotator damage, <br />and to provide smooth, <br />continuous stall -free rotation <br />and automatic incremental <br />speaker positioning for PA <br />announcements. They have <br />no dangling interconnect <br />cables. Re-entrant speakers <br />provide maximum protection <br />from the elements for the <br />high -power speaker drivers. <br />The entire SiraTone system <br />complies with tough 10 CFR <br />50 quality standards. It is <br />preassembled, prewired <br />and pretested at the <br />plant, shipped ready for <br />installation. Hardware is <br />provided for either universal <br />pole -mounting or for flat - <br />surface mounting. <br />Note. Dispersion angles are j <br />important when considering <br />rotating sirens. Too narrow a <br />pattern with a high rotational <br />speed may not provide a ' <br />recognizable outdoor <br />warning signal; listening <br />time is drastically reduced. <br />Greater horizontal dispersion <br />angles give those alerted <br />more time to hear, interpret, ) <br />and react to the warning <br />signal. <br />4 <br />