RE: [PSUBS-MAILIST] Hydrophones

[<jonw@psubs.org>]

Clarification in case it was confusing.  The range was close to a quarter mile AS MEASURED over the surface.  The pinger was lowered to the bottom (approximately 50 foot depth), and the hydrophone was simply "dipped" 5-6 feet below the surface of the water from a boat.

 

Jon

 

-----Original Message-----
From: owner-personal_submersibles@psubs.org [mailto:owner-personal_submersibles@psubs.org]On Behalf Of jonw@psubs.org
Sent: Saturday, August 30, 2008 11:12 AM
To: personal_submersibles@psubs.org
Subject: RE: [PSUBS-MAILIST] Hydrophones

We didn't have an opportunity to test range.  We did a demonstration on a dock which was probably close to 100 feet long.  I can only tell you that based on a distance of 100 feet, the loudness of the pinger picked up from the home-built hydrophone was noticably diminished from what I observed in fresh water.  That's very subjective based upon my hearing, which is why having others perform some testing is really necessary.  In fresh water, relatively shallow (20-50 feet) which is all I had available for testing, the range was close to a quarter mile over the surface.

 

Jon

 

-----Original Message-----
From: owner-personal_submersibles@psubs.org [mailto:owner-personal_submersibles@psubs.org]On Behalf Of djackson99@aol.com
Sent: Saturday, August 30, 2008 10:57 AM
To: personal_submersibles@psubs.org
Subject: Re: [PSUBS-MAILIST] Hydrophones

Jon

I look forward to seeing the documentation.  What was the range capability to the pinger in sea water? 

Have A Nice Day.

Doug