Originally Posted by
HeavyMetallist
If the audio was modulated with a code then that would have been very obvious when they analysed the signals.
As for uniquely coding aviation ULBs - there's not a lot of point since, unlike with tagged animals, in any given ocean in any given 30-day period it's hardly likely that there will be more than one pair of ULBs down there!
I think that the last few weeks since the ULB signal was found have defeated your argument. As the ULB has faded and the wreckage has not been found there are large numbers of people including the satellite experts down thread, that are claiming that the aircraft is in a totally different position and the ULB pings were some kind of artifact. Compared to the expense of the search coding the ULB with something sensible would have stopped all the fruitless discussion about 'the Northern route' and doppler shifts and aircraft in the Andamans or Diego Garcia. Just a simple coded ping equating to the MH370 airframe would do. Even better a depth indication added to that would be extremely useful to SAR and recovery operations. Judging by the comments on tags for underwater animals these capabilities are off the shelf items and can have a useful life of
ten (10) years!! And EASA thinks that they are pushing it to ask for 90 days?
