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Search with our sonar, our side sonar is getting a good location to put it in, we get that from finding the black box. we were encouraged a couple days ago. however, we are now very cautious in our optimism because we have not been able to reacquire that signal. >> how often does the black box ping? >> we heard signals coming at about one second intervals. and those are at a very specific frequency. so, the reason we were so encouraged at first was because all the signs did point to pings consistent with what we would expect from a black box. so the pings about at the correct frequency coming ...

Search with our sonar, our side sonar is getting a good location to put it in, we get that from finding the black box. we were encouraged a couple days ago. however, we are now very cautious in our optimism because we have able to reacquire that signal. >> how often does the black box ping? >> we heard signals coming at about one second intervals. and those are at a very specific frequency. so, the reason we were so encouraged at first was because all the signs did point to pings consistent with what we would expect from a black box. so the pings about at the correct frequency coming at about ...