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reply to post by samuel1990
Really? Where's the AF447 debris still floating? Seat cushions are cloth, which means they absorb water. Cloth sinks after it's been in water for awhile. You have no clue what you are talking about.
I am so getting over this whole thing. I think something fishy is up (no pun intended) and I believe the black boxes have been dropped there. Where are the debris? For the poster whom said seat cushions would soak up water and sink and also that the plastic would be held down by currents - that's a joke.
There would be observable items in the water for years to come IF it had crashed there and it had not all been recovered.
Maybe that's what they (whoever created this saga) want, is for us to get bored with this story. Has the flight cargo list been supplied yet or are the authorities still holding back on that due to the suspicious items they were carrying?
I seem to be waking up to a new story on hat happened every day- and it's getting old...
I don't know the exact model of underwater beacon used on MH370, but here is an example specification sheet showing the following parameters which includes a ping interval of 0.9 pulses per second (a 1 second interval would be 1.0 pulses per second):
At least you went with the 1 second interval.
I couldn't remember the operating frequency tolerance but now I see it's +/- 1 kHz which means it's too loose to determine doppler shift from frequency alone, it would have to be determined from relative frequency when the ship travels in different directions, which they may want to try to figure out the direction the pings are coming from. Unfortunately the display on the pinger receiver system by the same manufacturer isn't accurate enough for doppler analysis because the display only shows "37.6":
FAA & CAA approved under TSO-C121, the rugged and
durable construction of the DK120 insures its survival
even under high-impact shock. Once activated, the
DK120 will operate in water depths to 20,000 feet
(6000m). Using a 6 year user-replaceable battery, the
DK120 continuously sends out an acoustic signal for a
minimum of 30 days.
The DK120 is equivalent to Benthos (Datasonics) ELP-
362D Emergency Locator Beacon and is approved for use
by all major flight recorder manufacturers including
Honeywell Aerospace, GEC Marconi, L3 Communications,
Sfim Co., and Smiths Industries.
Operating Frequency 37.5KHz (± 1kHz)
Acoustic Output 160.5db ref 1 µ Pa @ 1m
Pulse Repetition Rate 0.9 Pulses Per Second
Pulse Length 10 ms
Activation Immersion In Salt Or
Power Source Non-Haz Lithium Battery
Battery Operating Life
Stand-by (Shelf life) 6 years
Operating Life 30 Days
Operating Depth 20,000 Feet (6,096 m)
I don't understand exactly what that means because I don't see how adjusting a sensitivity control gives direction, and apparently they are having a little trouble determining direction in the current search.
Once a signal is detected, the operator adjusts the sensitivity control for optimal directionality to determine the pingers true bearing and
then moves in the direction of the strongest signal.
edit on 7-4-2014 by Arbitrageur because: clarification
reply to post by Mikeultra
Foam rubber absorbs water too. I've watched foam rubber that has gone over the side of a sailboat start to sink before we recovered it. And it weighed several pounds when it got back in the boat.
reply to post by weavty1
You mean like those "hundreds of components" that floated after SwissAir 111, Egypt Air 990, AF447, Flash Air, Silk Air, Adam Air?
I go to bed last night and CNN has BREAKING NEWS that two distinct sets of "Pings" have been heard. It's now 17 hours later and CNN has BREAKING NEWS that two distinct sets of "Pings" have been heard.
Since this plane was lost, CNN has taken hundreds of hours to explain that no one knows where the flight 370 is at the moment. How does this TV Network earn any money?
Rothschild has very deep pockets. CNN doesn't have to earn any money. Their task is to spew propaganda 24/7! Over and over again.
Diego Garcia put out a rush contract for a dry cargo ship on 03/31/2014 for "transportation, travel, and relocation" services to operate in the area between Singapore and Diego Garcia! So what are they transporting and relocating? Disassembled aircraft parts from MH370? Are they going to plant wreckage for the Ocean Shield to discover? The U.S. and Australia are close allies. I'm not sure I trust the Australian Prime Minister either, he seems very careful talking when he does his press conferences.
BREAKING NEWS: The news idiots are speculating that the pinger signals are coming from a whale or maybe a volcano! I only listen halfway to keep up on the latest propaganda campaigns they are pushing. Whales and a volcano!