Whistle No. 2H Hear it! (pc) | Hear it! (mac) | Hear it! (realaudio)     Specifications Free air consumed (cubic ft./sec.)   .25 Net weight (lbs.) 5 Frequency cycles/sec. 467 Line size 3/8" db at 25 ft. 116 Audibility Distance Rating* 1 3/4 miles * Per Coast Guard Rating Method
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