Re: [PSUBS-MAILIST] Home-Built Pinger

[irox <irox@ix.netcom.com>]

Hi,

I don't think the EPIRBs are capable of locating a submarine underwater,
but more for providing guidance to surface vessels to get to your general
location, and more importantly I think, quickly raising the alarm that
you are in trouble.

For subs with a reasonable surface range, I think both the EPIRB and
an acoustic beacon would be needed.  Raise the alarm quickly and get
rescuers to your general location, then the acoustic beacon for pin
pointing the sub.

I've purchased a "Underwater Acoustic Beason Model NA1" by the
Dukane Corporation, SeaCom Division, IL.  It's an older model used
on air craft.  Similar to the their new models:
http://www.dukcorp.com/seacom/Products/Beacons.htm

Mine takes replaceable 9v battery.  It looks like it would easy to
make a replacement endcap for it that allowed an external power
source and activation.

I bought this off of Ebay for around $20.  And here's the same one
on ebay again:
http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&viewitem=&item=360028503143

I've not tested mine yet, at some point I'll get a hydrophone so
I can listen for it and test ranges, etc..

Cheers,
  Ian.

-----Original Message-----
>From: "Sean T. Stevenson" <cast55@telus.net>
>Sent: Mar 4, 2008 11:44 PM
>To: personal_submersibles@psubs.org
>Subject: Re: [PSUBS-MAILIST] Home-Built Pinger
>
>Just a thought, but for emergency use (i.e. disabled sub), wouldn't the most 
>effective solution be a registered 406 MHz GPS enabled EPIRB?  If you could 
>devise a way to manually deploy the EPIRB from the distressed sub, the GPS 
>location is encoded in the digital signal, so the appropriate rescue 
>co-ordination centre has access to that information immediately, and the 
>EPIRB ID is associated with registration information which would contain a 
>description of the vessel (submarine) and communication facilities.  I don't 
>know how much information you can file in an EPIRB registration, but 
>certainly you can include emergency contact numbers, etc., through which the 
>RCC could obtain a prepared rescue plan for your vessel, and task the 
>appropriate resources with minimal delay.
>
>-Sean
>
>
>
>************************************************************************
>************************************************************************
>************************************************************************
>The personal submersibles mailing list complies with the US Federal
>CAN-SPAM Act of 2003.  Your email address appears in our database
>because either you, or someone you know, requested you receive messages
>from our organization.
>
>If you want to be removed from this mailing list simply click on the
>link below or send a blank email message to:
>	removeme-personal_submersibles@psubs.org
>
>Removal of your email address from this mailing list occurs by an
>automated process and should be complete within five minutes of
>our server receiving your request.
>
>PSUBS.ORG
>PO Box 53
>Weare, NH  03281
>603-529-1100
>************************************************************************
>************************************************************************
>************************************************************************
>




************************************************************************
************************************************************************
************************************************************************
The personal submersibles mailing list complies with the US Federal
CAN-SPAM Act of 2003.  Your email address appears in our database
because either you, or someone you know, requested you receive messages
from our organization.

If you want to be removed from this mailing list simply click on the
link below or send a blank email message to:
	removeme-personal_submersibles@psubs.org

Removal of your email address from this mailing list occurs by an
automated process and should be complete within five minutes of
our server receiving your request.

PSUBS.ORG
PO Box 53
Weare, NH  03281
603-529-1100
************************************************************************
************************************************************************
************************************************************************