Page 47 - Pinger News Today

Dont work as in air france 447. either they are damaged or that kind of a situation. we found in the 9/11 investigation the black box was destroyed so it was pointless. the biggest draw back on the pingers themselves is damage or not operational. when they selected the frequency for the pinger pulse ps they tried to make them not sound like something in the sea. i think it is a pretty good chance that it is a pinger. it doesnt sound like other things. it is a cyclical emission like a stop watch....

Trenches or after the pinger has stopped in the trenches is going to be extremely difficult. >> reporter: zain asher, cnn, buffalo, new york. theres a big difference between the black boxes used by commercial airliners and those used by some in the military. the military version has a version that deploys on impact. but those cost three times as much as traditional black boxes. our special coverage of missing flight 370 continues. nic robertson is in kuala lumpur where a new group has heard ...

Next? >> it looks like were waiting for the "echo "to make it to the location of the chinese vessel. you heard the figure 14 hours in transit. thats going to be a very significant development. remember, the chinese detected this twice. its probably a fairly small haystack. he said the water was 4.5 kilometers deep. thats three miles. the range of these pingers is only guaranteed to be a little over a mile. so im sure these signals are very faint and they need something like the echo and its reso...

Commander, mr. houston, is going to have to reprioritize these assets and make a judgment call. >> how so? >> if its the pinger, does he send in the maritime surveillance aircraft? is that enough to say yes or no or does he deploy a submarine and sending down there? its a priority sort of -- >> les brings up a point he brought up earlier where he said its been 24 hours since we heard about this so-called ping detection that they heard. and so far we have heard no confirmation from the chinese go...

Through this water. the signal is very week ak to bn with. were at the end of the battery life. theres propagation. there are echoes, also, that they have to deal with which make it very difficult. because they can distort the shape of the received pulse. you see? so there are a lot of different things playing in here. and if you heard the reception or you detected the reception, you would -- it would not be a clean signal to begin with. >> no. all right. we got to go. you have another one? >> i...

Mapping in the bottom would produce leads. this takes a long time to search. i think they will find something using those techniques. >> rob, without the battery life on these pink pinger are s talke about how difficult it is to survey the full ocean bottom? >> it is difficult. but to search the existing search area would take around nine months but not all search areas are created equal. you may not have to search the whole area itself. ren reanalysis would enable you to search it quickly. >> h...

Employed, is it smart to have a pinger onboard? i have looked at the video and on the picture of the pinger on that boat. it operates at the same frequency. it is timed to go for one to many days. we dont know what the chinese were doing with it. where it was potentially in the dote. is there a risk that they were hearing a ping in the boat? we would have to look for that

Crashed into the atlantic ocean in 2009. thank you bouch so much for joining us. jeff, let me start with you. and explain to us if you will what else could be under water that would make a pinging noise the same as black boxes do. >> okay. good morning. the song that the pinger emits have very unique. the designs and pinger around it were selected because of that. its unusual for something natural to emit a sound like that, so this is certainly something that would most likely be manmade. so if ...

Where the current search areas are, thats 200 miles. here to here is 200 miles as well as there. so where the chinese say they heard that ping is well away from those current search areas. >> all right. jennifer gray, thank you so much. pinger batteries on the black boxes from flight 370 could expire at any moment. british ship with advanced detection gear is in a an area where chinese detected pulse signals. as cnn reports some of this technology was never designed for this kind of search. >> i...

Know why until they recover the aircraft. >> what do you see as the next step as we enter a fifth week after the disappearance of this plane. >> if that echo finds nothing they are going to have to commit to the floor. it was the last day of the shelf life of the pinger battery are. they are going to have to map that floor and quickly what do you see in week five? >> im afraid we are going to find the boxes and the voice recorders are going to tell us what happened. >> it may not yield the level...