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Before any beacon is shipped from here its sound output is measured in one of these huge 50,000 gallon tanks. it s lowered into the tank through the floor above. surround by hydrophones, ultrasonic readings are recorded on this computer. this pinger is twa flight 800 which went off the coast of new york back in 1996. this company made the pinger. after it was recover they got it back. this one was found in shallow water but they are designed to function in water as deep as 20,000 feet. what about the frequency? crews at sea picked up a slightly lower frequency than the pinger s standard frequency of 37.5 kilohertz. water temperature can shift the frequency. it s so distinct, right? there s nothing else that would sound like this with this frequency. 37.5 kilohertz was selected because it is unique from the background noise in the ocean. ....
Can travel 2 1/2 nautical miles. cliffs and vegetation can get in the way limiting that distance. before any beacon is shipped from here its sound output is measured in one of these huge 50,000 gallon tanks. it s lowered into the tank through the floor above. surround by hydrophones, ultrasonic readings are recorded on this computer. this pinger is twa flight 800 which went off the coast of new york back in 1996. this company made the pinger. after it was recover they got it back. this one was found in shallow water but they are designed to function in water as deep as 20,000 feet. what about the frequency? crews at sea picked up a slightly lower frequency than the pinger s standard frequency of 37.5 kilohertz. water temperature can shift the frequency. it s so distinct, right? there s nothing else that would ....
Shallow water. but they are designed to function in water as deep as 20,000 feet. but what about the frequency? crews at sea picked up a slightly lower frequency than the pinger s stt frequency of 37.kilo hertz. they said water temperature can shift the frequency. it s so distinct, right? there s nothing else that would sound like this with this frequency? the 37.5 killo hertz was selected because of the background noise in the ocean. reporter: randi kaye, cnn, sarasota, florida. coming up, look at this. live pictures out of an aviation accident lab in california where they investigate airline crashes. so if flight 370 is ever found, what can experts learn examining pieces of the plane. we ll explore that coming up. qu, how much money do you think you ll need when you retire? then we gave each person a ribbon ....