<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto"><div>Hi Juergen,</div><div id="AppleMailSignature">I am not sure what's in a transducer. I believe the modern ones</div><div id="AppleMailSignature">are potted. </div><div id="AppleMailSignature">I have made enquiries about forward facing transducers locally in Auckland,</div><div id="AppleMailSignature">where they do development work & testing on them. The enquiry was</div><div id="AppleMailSignature">forwarded to the European transducer manufacturer who gave away nothing </div><div id="AppleMailSignature">& said test at your own risk.</div><div id="AppleMailSignature">Cheers Alan<br><br>Sent from my iPad</div><div><br>On 20/07/2018, at 2:06 AM, Juergen Guerrero Kommritz via Personal_Submersibles <<a href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>> wrote:<br><br></div><blockquote type="cite"><div><div style="font-family:Helvetica Neue, Helvetica, Arial, sans-serif;font-size:13px;"><div style="font-family:Helvetica Neue, Helvetica, Arial, sans-serif;font-size:13px;"><div></div>
<div>Hello Hank</div><div>In the book three miles down that describes the exploration of the Japanese submarine I-52 in the central Atlantic the author describes how the crew of the Mir submarine used a fishfinder for the deep dives. The normal sonar was broken so they used a fisfinder, made a hole in the transducer, filled it with oil and used it in their dives down to 4000 m with no problems for more than a month.<br></div><div>May be this will work for you, than I supose you are not going so deep. <br></div><div>Best wishes</div><div>Juergen<br></div>
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Am Mittwoch, 18. Juli 2018, 17:55:51 GMT-5 hat hank pronk via Personal_Submersibles <<a href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>> Folgendes geschrieben:
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<div><div id="yiv7419844857"><div><div style="font-family:Helvetica Neue, Helvetica, Arial, sans-serif;font-size:13px;"><div>Hi all,</div><div>I am looking for ideas on how to make a depth transducer survive to 3,000 feet. I am thinking about a 1 atm housing with a fibreglass bottom that the transducer can shoot through. </div><div>Alan, were you working on this idea?</div><div>Hank</div><div style="font-family:Helvetica Neue, Helvetica, Arial, sans-serif;font-size:13px;"></div></div></div></div>_______________________________________________<br>Personal_Submersibles mailing list<br><a ymailto="mailto:Personal_Submersibles@psubs.org" href="mailto:Personal_Submersibles@psubs.org">Personal_Submersibles@psubs.org</a><br><a href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles" target="_blank">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a><br></div>
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