CNN CNN Newsroom April 8, 2014 19:27:00
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...
Source: archive.org