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boblespam
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re: Robo-fish to patrol oceans
boblespam   4/4/2013 6:10:32 AM
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$5 million and they still don't know how to power it ?!

Saxman2252
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re: Robo-fish to patrol oceans
Saxman2252   4/4/2013 6:24:49 PM
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Another way to charge this device could be through a unique electrolysis propulsion approach with some additional conditions.

CMathas
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re: Robo-fish to patrol oceans
CMathas   4/4/2013 10:39:07 PM
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I once caught a marlin in Mexico. When I read this story, I couldn't help but think of the possibility of someone snagging this thing--what a catch, and even a better fish story. Yes, I know it will be used much deeper than would be accessible--but still the imagination wanders....

Susan Rambo
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re: Robo-fish to patrol oceans
Susan Rambo   4/5/2013 4:00:45 AM
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Hi Saxman2252, electrolysis propulsion such as Electrolysis Propulsion for Spacecraft Applications (October 1, 1997)? http://archive.org/details/nasa_techdoc_19970041522

BruceP8
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re: Robo-fish to patrol oceans
BruceP8   4/5/2013 8:22:56 PM
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I'd be thinking alien invasion...

DrQuine
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re: Robo-fish to patrol oceans
DrQuine   4/10/2013 12:38:42 AM
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As a last resort, perhaps the device can float to the surface and recharge using solar cells on the body. Considering the cost, serious consideration must be given as to how to avoid collisions with motorized vessels. I hope a solid program is also in place to ensure it doesn't attract unwanted attention from underwater predators - especially since it generates electrical fields.



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As data rates begin to move beyond 25 Gbps channels, new problems arise. Getting to 50 Gbps channels might not be possible with the traditional NRZ (2-level) signaling. PAM4 lets data rates double with only a small increase in channel bandwidth by sending two bits per symbol. But, it brings new measurement and analysis problems. Signal integrity sage Ransom Stephens will explain how PAM4 differs from NRZ and what to expect in design, measurement, and signal analysis.

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