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Great document Jens! > Date: Thu, 12 Nov 2009 08:53:42 -0500 > From: jonw@psubs.org > To: personal_submersibles@psubs.org > Subject: Re: [PSUBS-MAILIST] guide to hydrophone construction > > > Thanks for that Jens. For towing a unit relatively quickly, the > streamlined shape is important to reduce noise from moving through the > water. The units David developed are very sensitive to this and one way > I used to make sure the electronics were working after encapsulating the > piezo element in a PVC container was to hold it under running water from > the house faucet. If the electronics were working you could hear the > water running over the housing. > > Jon > > > Jens Laland wrote: > > David & co > > > > I just found this document which contains interesting information on > > construction of hydrophones: > > > > http://www.otago.ac.nz/marinescience/downloads/Barlow%20et%20al%202008%20HydrophoneConstruction_TM-417.pdf > > > > Best regards, > > Jens Laland > > > > > > ************************************************************************ > ************************************************************************ > ************************************************************************ > 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 > ************************************************************************ > ************************************************************************ > ************************************************************************ > Hotmail: Powerful Free email with security by Microsoft. Get it now. |