[Lowfer] Flight 370 and 37.5 KHz.

[N6IO]

I  think the classification might have been "Munitions".  I remember that
the first GPS units were not allowed to work above something like 10,000
feet or above 100 MPH for a similar reason.  You might attach it to a
home-made ICBM and cause all kinds of trouble.

All documents about spread spectrum used to have a similar designation.  I
remember trying to find info about spread spectrum back in the 80's and
finding almost everything was classified.    I'm not surprised that SDR
technology might have had a similar treatment in the US and Allied
countries.

Hopefully they are recording the spectrum from all of these intermittent
"pings" so additional post-processing can be done to verify whether or not
it was anything of interest.  In another week or two all we'll have left to
analyze are these recordings.


Craig - N6IO




On Mon, Apr 7, 2014 at 1:48 PM, Clive S Carver
<clive at ancient-mariner.co.uk>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
>