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Re: LF: SpecLab helps plane hunt

To: <[email protected]>
Subject: Re: LF: SpecLab helps plane hunt
From: "Graham" <[email protected]>
Date: Mon, 7 Apr 2014 18:02:05 +0100
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Or is the acoustic PING encoded

The recovery sonic beacons send only a pulse flight boxes are not the only things that have locator beacons , other 'things' that occasionally
are lost by accident  or design  also  have  ping'ers
that work round this frequency , the surfacing radio boys have encoding etc
lower  freq  would  travel  better  , but  be  more  vague
as to location of the source , no one has mentioned the Sub (s ?) for a while ?
G,


--------------------------------------------------
From: "M0FMT" <[email protected]>
Sent: Monday, April 07, 2014 3:16 PM
To: <[email protected]>
Subject: Re: LF: SpecLab helps plane hunt

Hi all
If their kit is that shaky do
they understand that EM "breakthrough" into the
long trailing  antenna like cables from the sensors at 37.5
kHz is possible?  i.e. Powerful VLF TX operating in that
frequency range because of its sea penetrating properties
for very purpose of communicating with submerged Naval
Submarines. Or is the acoustic PING encoded to avoid this
confusion?

73 es GL Pete
M0FMT IO91UX

--------------------------------------------
On Mon, 7/4/14, Mike Dennison <[email protected]>
wrote:

  Subject: LF: SpecLab helps
plane hunt
  To: [email protected],
[email protected]
  Date: Monday, 7 April, 2014, 14:15
I have been amazed at the
low tech
  methods apparently being used in

  the hunt for the 'pings' from the
black box of the missing
Malaysian plane. But
today the BBC lunchtime news showed the Ocean Shield
search ship using
DL4YHF's Spectrum Laboratory, presumably with a 96kHz
soundcard as its input -
exactly the kit used for the recent amateur

radio transatlantic tests on 29kHz. Well done, Wolf. Your
excellent software may help solve this

mystery.
de Mike,
G3XDV

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