Author Topic: Towfish from sratch  (Read 2953 times)

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Offline Rodondo

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Towfish from sratch
« on: February 18, 2014, 07:12:34 PM »
Hi all, I suppose introductions are in order, I’m Rodondo, first year Naval Architecture student from Southern Australia. Have been wreck hunting for many years, mainly using free-diving, naval charts and dumb luck. However, moving to one of the countries coldest areas, free-diving is out of the question and past a depth it gets dangerous. I’ve been eyeing off SS sonars for a while but lack of funds have prevented me from getting one. Finally this year I looked into how to make one myself, mind you with about as much electrical knowledge as Year-12 Physics permits,  so all I know at the moment is that I’m probably need some Piezoelectric drivers and a display.  The body of the tow-fish body will be no problem as I have a furniture factory at my disposal. I’m aiming for a beam that has a width of 200-400m and work in at least 40 meters .


Offline Rüdiger

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Re: Towfish from sratch
« Reply #1 on: February 19, 2014, 01:26:12 AM »
Hi Rodondo

Welcome to the forum :)

Why build a sonar itself, for the range to you aspire there are enough good finished sonars. Also, there are sometimes affordable used professional equipment in www.
If you really build a sonar build yourself, then let us share it here in the forum.

mvh
Rüdiger
Sorry
English is not my first language !
http://de.groups.yahoo.com/group/SOB-International/

Offline Rodondo

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Re: Towfish from sratch
« Reply #2 on: February 19, 2014, 01:55:20 AM »
Thank you Rüdiger

Affordable being the key word  ;) So far I've only found units over the 1/2 thousand AUD mark which is about double what I want to spend. (unless anyone has been hiding the cheap ones or the basic ones of which I have seen none) Hence I figure I could try the piezos myself, my main problem being interpreting that into usable data.

Offline Rüdiger

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  • Joined: Feb 2011
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  • Accessories: Towfish and Towcam
Re: Towfish from sratch
« Reply #3 on: February 20, 2014, 01:29:26 AM »
Hi Rodondo

There are only a few manufacturers of suitable piezo elements and they sell in general not singly and even not at all for a reasonable price. Here in the forum there are some specialists who would also build a better transducher (longer piezo elemets) but also, they found no piezo elements for a reasonable price.
Sorry, but I think you can build yourself a sonar not cheaper than the known you. ???

mvh
Rüdiger
« Last Edit: February 20, 2014, 01:33:05 AM by Rüdiger »
Sorry
English is not my first language !
http://de.groups.yahoo.com/group/SOB-International/


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