07-04-2014, 10:44 PM
Peter Lemkin Wrote:Strangely, there are now two reports of two 'pings' from two separate locations - a most unlikely event. There are two flight recorders on each plane, but the chances of so quickly finding one is very surprising - finding both - and so far apart [apparently 300 miles], even less so. Another strange thing is though it was at the correct frequency, it was only heard for a few seconds. The flight recorders send out repeated pings and shouldn't only be heard for a short time....although in that area there are very large mountains on the sea floor. Something doesn't fit...like most of the story so far.... I'm very skeptical about this. It is also a bit strange that the Chinese were so quick to locate it and first to locate it - but not able to record it. Things don't add up - which is 'normal' for this incident.
I don't know if it's been mentioned yet--I haven't read the entire thread yet--but I've been following the discussion at PPRUNE (Professional Pilots Rumour Network), and it's been suggested that dolphins emit sounds at that frequency, obviously not at that exact frequency, but if the receiver is set at 37.5 kHz and the dolphins are "broadcasting" across a fairly wide spectrum, the signal could very well appear to be limited to that frequency because of the limited bandwidth of the receiver. This would tend to explain the short signal bursts and the wide geographical distribution of the signals.