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Hi David,
Is the broadband communications system fearly reliant on
being in a set direction ?
ie would it have to be upward pointing to communicate with
the boat or set horizontally at a right angle
to communicate with a sub in that direction, or will the
trial be testing this.
Where I fish a lot there are schools of fish feeding
noisily on the surface throughout summer, with larger fish
underneath.
The passive sonar would be great for tracking the action
in a submarine.
I beleive you said you worked for the Postal Service;
you'll be looking at those Post Office scales in a differant
light from now on.
Regards Alan
----- Original Message -----
Sent: Tuesday, July 28, 2009 6:43
PM
Subject: RE: [PSUBS-MAILIST] collision
avoidance sonar pics
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
----- Original Message -----
Sent: Sunday, July 26, 2009 10:35
PM
Subject: [PSUBS-MAILIST] collision
avoidance sonar pics
To All:
Kyle is in the process of
installing a collision avoidance sonar system I recently produced for his
K-250 submarine. Take a look under special projects and photos under
collision avoidance and my name for some neat pictures! The system was built
with small submarines in mind where space is premium.
This system
should be under testing in about two weeks and promises to become a must
have item.
In that it contains but a single amplification channel,
it really represents the most basic passive sonar I can conceive.
It is made from an easily acquired Radio Shack project box and other equally
available items for you do-it-yourselfers. Schematics and construction
assistance will be available as well as complete builds once the system has
been placed thru its paces.
I extend a special thanks to Kyle for
trying this set up out for us! I eagerly await is operational analysis and
critique.
David Bartsch
Windows Live™ Hotmail®: Celebrate the moment with your favorite sports pics.
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Windows Live™ Hotmail®: Celebrate the moment with your favorite sports pics.
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