[Lowfer] Flight 370 and 37.5 KHz.

[Charlie , W5COV]

Here is information from a search article I just read. Full article at :

http://news.yahoo.com/possible-signals-lost-jets-black-boxes-heard-045140251--finance.html

The airliner's black boxes normally emit a frequency of 37.5 kilohertz, 
and the signals picked up by the Ocean Shield were both 33.3 kilohertz, 
said U.S. Navy Capt. Mark Matthews. But officials contacted the device's 
manufacturer and were told the frequency of black boxes can drift near 
the end of their shelf lives.


The ping locator is designed to detect signals at a range of 1.8 
kilometers (1.12 miles), meaning it would need to be almost on top of 
the black boxes to detect them if they were on the ocean floor, which is 
about 4,500 meters (14,800 feet) deep.

Charlie, W5COV


On 4/7/2014 12:48 PM, Clive S Carver wrote:
> Back in 2007 after I had purchased an RF Space SDR-IQ, I wondered whether
> there were any UK manufactured SDRs. Google found one for me (I cannot
> remember the make/model), but rather expensive, professional and without
> software - so I was very happy with my SDR-IQ choice and I still am. However
> what amused me in the small print of the UK SDR was the statement regarding
> limitations on export, since it was classed as a 'weapon of mass
> destruction' ooooh...!!
>
> So I just hope that the US Navy don't now try to make DL4YHF's Spectrum
> Laboratory 'Classified' !!!
>
> 73's
>
> Clive
>
> -----Original Message-----
> From: lowfer-bounces at mailman.qth.net [mailto:lowfer-bounces at mailman.qth.net]
> On Behalf Of Warren K2ORS
> Sent: 07 April 2014 17:55
> To: Discussion of the Lowfer (US, European, & UK) and MedFer bands
> Subject: Re: [Lowfer] Flight 370 and 37.5 KHz.
>
> FYI
>      There is an interesting thread on the RSGB reflector. The U.S. Navy
> is actually using the same software Spectrum Laboratory by DL4YHF  to
> analyze the pings as was used in the 29kHz T/A work.
>
> 73 Warren
>
>
> On 4/6/2014 10:35 PM, Dexter McIntyre W4DEX wrote:
>> Tom "Doc" Gruis wrote:
>>> ASn interesting article on one of our local TV station's website this
>>> morning.
>>>
>>>
> http://www.kcci.com/national/scanners-scour-ocean-depths-for-flight-370/2533
> 6098?treets=des&tid=265847210813&tml=des_natlbreak&tmi=des_natlbreak_1_06570
> 104052014&ts=H
>>>
>>> Just passing it along because of the frequency of 37.5 KHz. involved.
>> The pinger frequency caught my attention also Doc.   That would be a
>> good frequency for Bob to avoid.  Some non technical reporter may cause
>> a stir if that hit the media.
>> Dex
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