Alan, I too am anxious to find these things out as well as much of this is unknown or just "gestimates". One thing for which I am sure of is that many things that would normally not be heard will be easily picked up such as boat traffic even your own boats motors. You could even know when motor bearings are showing wear long before you would otherwise be aware of it. I am holding my breath and patiently awaiting Kyles in-water performance evaluations. From his report, future sonar system might have to be altered depending upon that which he finds. His set up incorporates a new type of passive hydrophone that no longer requires an air filled resonance chamber in order to operate. Initial testing results show this hydrophone actually works better when compared side by side with earlier HBH-2 units. The greatest advantage would be a much deeper depth of operation with no air bubble to maintain. Another bit of sonar news would be that Dean is soon to launch his sub with the first deployed broadband voice underwater communications system installed. Once in the water, He will be in a position to communicate with his other complete system deployed on his support craft and should let us know how well this system works in the field. Console #6 will be installed aboard his friend Kyle's submarine that is already in the water. David Bartsch From: alanjames@xtra.co.nz To: personal_submersibles@psubs.org Subject: Re: [PSUBS-MAILIST] collision avoidance sonar pics Date: Mon, 27 Jul 2009 09:19:07 +1200 That looks good David,
Be interesting to see what kind of range it has & how wide an angle it picks up on.
Alan
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