Re: Hydrophones (was: periscopes)

["D. Blake" <dblake@bright.net>]

A cheap possibility at http://www.is-design.com  click on "Afab" logo.
Big Dave
-----Original Message-----
From: Michael B Holt <michaelbholt@juno.com>
To: personal_submersibles@psubs.org <personal_submersibles@psubs.org>
Date: Sunday, September 19, 1999 9:03 PM
Subject: Hydrophones (was: periscopes)


>On Sun, 19 Sep 1999 15:54:07 -0700 (PDT) Chris Nugent writes:
>>     Yeah,  I thought just a non-retractable one would get me by. 
>>Thought it might be cheaper to go the periscope route than to invest 
>>in some kind of listening device.  Thanks for the info tho....
>
>OK, this suggests a question: how does one build a listening device?
>
>Where can we find the hydrophones?    And the associated connectors?
>
>The electronics of the rest of it seem fairly uncomplicated; the big
>problem
>is where to find the sensors.
>
>Many years ago, I bought from a compnay called "John J,. Meshna" a
>hydrophone.    Just the listenting head (no electronics), but I've not
>seen since then a hydrophone that wasn't a part of a compicated
>and expensive system.
>
>Any ideas? 
>
>
>
>Mike
>-- 
>
>___________________________________________________________________
>Get the Internet just the way you want it.
>Free software, free e-mail, and free Internet access for a month!
>Try Juno Web: http://dl.www.juno.com/dynoget/tagj.
>