Page 4 - Outside Edge News Today

The pinger locator with the fin on top is towed slowly through the area. it can go down to 20,000 feet below the surface. for hours and miles at a time, it is listening intently for the black boxs signal. >> how far away can it be? >> the outside edge is about 2 miles, a mile and a half to 2 miles away, it can detect the sound. >> the signal would come up through the umbilical. you can see here is a cable. it runs up through the umbilical. it comes into our receiver unit. we have speaker on here...

Area. it can go down to 20,000 feet below the surface. for hours and miles at a time its listening sbenintently for black box. >> how far away? >> the outside edge is two miles. it can defect the sound. >> reporter: if the pingers battery is fading it can still detect it. >> the signal will come up. you can see heres a cable. it runs up through the umbilical and comes into our receiver unit. we have a speaker on here and all the power buttons. we adjust the frequency. out of this box we have a c...