minutes, it s quite possible that they did get a piece of sound coming through what s called the deep sound channel. about 2,000 to 4,000 feet deep. essentially, sound can come up and be caught in that channel. they could have picked up a minute and a half of the signal and lost it. the towed pinger. that s why they re going deep. the submarine is in there because i think they can get into unclassified depths are 2,400 feet for these submarines. i believe they re getting into the deep sound channel. one quick question for richard quest. i hate to do this, but it s critical. early on in this mystery everyone asked the question about about the elts? they re supposed to be activated by salt water. we haven t talked about that in about 31 days. i m still not sure i understand why none of them onboard, and there are several, were activated. if this thing s in water. and no one can give you the answer. oh, there ll be plenty of
underwater, there s a channel from 2,000 to 4,000 feet that allows sound to travel great distances. it has a ricochet effect. maybe they re using this acoustic sound to get down to that depth to see if they can hear that beacon. no one has talked about this, but it s called the deep sound channel. i think that s extremely interesting that maybe they re hoping against hope that they can extend the range of this pinger if it s actually there. what are you writing, richard? i was just writing very interesting, the level which the pinger is going down, i believe reading about it this morning, is about 3,000 feet. that s the sort of level they re looking at. so he just latched onto something there. mary, do you think the u.s. should continue looking for this plane, would adding more resources at this point make a difference? well, i think we ll continue
maybe they re using this acoustic sound to get down to that depth to see if they can hear that beacon. no one has talked about this, but it s called the deep sound channel. i think that s extremely interesting that maybe they re hoping against hope that they can extend the range of this pinger if it s actually there. what are you writing, richard? i was just writing very interesting, the level which the pinger is going down, i believe reading about it this morning, is about 3,000 feet. that s the sort of level they re looking at. so he just latched onto something there. mary, do you think the u.s. should continue looking for this plane, would adding more resources at this point make a difference? well, i think we ll continue and we should continue for at least a reasonable time thereafter. we don t exactly know when the pinger is going to go dead, it could be dead already, it could