Underwater Cellular

[bottom_sucker]

Just read short blurb in Network World about Canadian company in BC that has created units to provide underwater cellular access.

Go to http://www.naval-technology.com then under companies index look for DiveLink International Technologies. They have some pics of the units in action.

Waayyyyyyyyyy Kuuuulllllllllllllll

[JT2]

I don't know about the rest of y'all, but one of the reasons I go diving is to get away from cell phone ringing 24/7 I sure as hell don't want one I can take underwater with me.

[BlueWaterDiving]

I don't even like it when they are one the boat. All they do is ring ring. And the guy is diving.:bonk:

[cyklon_300]

a pink tank boot.

[roturner]

bottom_sucker once bubbled...
Just read short blurb in Network World about Canadian company in BC that has created units to provide underwater cellular access.

Go to http://www.naval-technology.com then under companies index look for DiveLink International Technologies. They have some pics of the units in action.

Waayyyyyyyyyy Kuuuulllllllllllllll

It's not for me. BTW, it's not under water celluar access, it's an underwater communications system that uses cellular technology.

I tried one a few months ago. They work but I like the quiet too much.

R..

P.S. Hmmmm just read that webpage. Sounds like they do have a cell-phone interface. It's probably a module that you can attach to the dry part of the unit. Definitely not for me.

R..

[Tanstaafl]

I've got some friends in the military/anti-terrorist business. I'll have to foward them a link.

Like most everyone else I like my quite time. One of the best things about getting down south is my cell phone won't work outside the country!

[RICHinNC]

hey...let's screw with Domino's and order a pizza and see if they make the 30 minutes!!! And, we wont take it if its soggy!!

sorry....just had to

[lakesdiver]

If I start hearing cell phones ringing underwater, I'm DEFINITELY gonna' start wearing one of the machete-sized dive knives...

[Soggy]

I brought my cell phone under with me once because I forgot it was in my pocket under my drysuit. To the best of my knowledge, I didn't have any underwater service, though. :)

Though they would add greatly to the safety of diving, one of the things I like about diving is the tranquility and that no one can get ahold of me except for my buddy. For that 45 minutes, the world is silent and I can't be bothered except to untangle the flag from someone's fin.

[carlislere]

Why would anyone want to dive with a cell phone!? That's one reason I dive, to get away from it!

[The Pirate]

Man, I need to get me one of those snipers to guard my gear while I'm u/w. :D

[Butch103]

bottom_sucker once bubbled...
Just read short blurb in Network World about Canadian company in BC that has created units to provide underwater cellular access.

Go to http://www.naval-technology.com then under companies index look for DiveLink International Technologies. They have some pics of the units in action.

Waayyyyyyyyyy Kuuuulllllllllllllll

I catch you with that on Tim's charter and you will be uncerimoniously (sp?) tossed overboard sans gear and left to locate Tim's ladder etc........

arrrrrrggggggghhhhhhhhhhhhhhhhh!!!!!!!!!!!!!!!!!!! :bonk: :bonk:

[Groundhog246]

cyklon_300 once bubbled...
a pink tank boot.
I heard the best way to find your gear still where you left it, is buy pink gear. :D

But UW cell phones. :boom: :boom: :boom: :boom: I will not be responsible for my actions when my dive buddy stop to answer his phone underwater.

[donacheson]

roturner once bubbled...


It's not for me. BTW, it's not under water celluar access, it's an underwater communications system that uses cellular technology.

I tried one a few months ago. They work but I like the quiet too much.

R..

P.S. Hmmmm just read that webpage. Sounds like they do have a cell-phone interface. It's probably a module that you can attach to the dry part of the unit. Definitely not for me.

R..

Not even cellular technology - it's an acoustic (ultrasonic) comms system.

[gilligPhant0m]

So which company is going to produce the waterproof cell phones?

[kd5izq]

JT2 once bubbled...
I don't know about the rest of y'all, but one of the reasons I go diving is to get away from cell phone ringing 24/7 I sure as hell don't want one I can take underwater with me.

AMEN! BROTHER PREACH IT!!!!

(though I have to admit, the simple techy portion of it would be pretty cool, depending on the depth, wouldn't want one within 100 yards of me on a dive weekend or trip, but techy cool anyway)

[GearHead]

I'm with JT2 on the cell phones - zero interest. What I would find more interesting: Underwater GPS.

[kjunheart]

I know that I don't ever want to feel like I have to bring a cell phone on the boat with me much less underwater! Being underwater is about the only peace I get!

I just spoke with my friend Kim (in pic w/me) who is part of a special operations team with the City of West Palm Fire Dept. She said they used some like these (Neptune's) just last night in some of their pool work. She said they are crystal clear and they were able to talk to each other underwater as well as with the surface. Incredible!

[kd5izq]

I'm with you Gearhead, underwater GPS, now thats something I think everyone would be interested in.

[donacheson]

gilligPhant0m once bubbled...
So which company is going to produce the waterproof cell phones?

None, because cell phones, waterproof or not, won't work underwater. Radio frequency signals generally don't penetrate far into the water.

[kd5izq]

None, because cell phones, waterproof or not, won't work underwater. Radio frequency signals generally don't penetrate far into the water.
Very true, and I'm afraid that be the future impedement on underwater GPS, but who knows what the future may hold. I'm probably wrong, but doesn't it take a very low range frequency to make its way through a material as dense as water?

[weight_for_me]

kjunheart...good point..I can see a definate use for something like that for SAR work.
Randy...

[tinman]

uptight stock broker closing deals at 100' wreck dives, bored teenages suffering from Gameboy withdrawl getting their fixes on OW cert dives, yah can't wait....This is the only place my cellphone & the WORLD can't reach me...

Always the optimist, I suppose this could be a potential emergency communication tool - perhaps better than shooting a bag and hoping someone sees - NEED AIR, TRAPPED...SEND PIZZA & GAS quick...

[Grajan]

Well - You can have it - at a price.

A basic installation cost about $1,000,000 p/a to install - probably more but its kind of academic with that many noughts.

Go to the following link and hit the NASNet button on the left:

http://www.nautronix.com/otg/main_products.html

We are doing some fun stuff out in the 'deep'.

[kd5izq]

Had to pick myself back up off the floor after reading that price :eek: . From the sounds of things they have basically submerged GPS antanaes, but it will only work in an area they have submerged the GPS Receiving / NASNet Sending units. Did I understand that right?

[Grajan]

Like all (most) underwater positioning systems it uses the speed of sound as a distance reference.

To date this has always been done by sending a signal from one beacon to another, getting a reply back and measuring the distance by travel time.

The NASNet system works by having an array of beacons continuously transmitting synchronised signals (like GPS satellites).

The reciever measures the relative timing of those signals and thus positions itself in the array, hence the analogy with GPS.

This is new stuff and only likely to be used to provide positioning in large subsea fields.

I hope that makes sense. I do ot know why their URL to the PDF description does not work.

[kd5izq]

Makes sense to me. It was basically what I thought, just minus the actuall interface with GPS signals. Oh well.

[Grajan]

You do not need a direct interface to surface GPS. Each of the NASNet beacons is boxed in to precise (as possible) surface coordinates using a DGPS equiped surface vessel. Unlike satellites they stay still.

Once we have the coordinates of the beacons accurately placed in our surface coordinate system all underwater measurements of position are in that same coordinate system. The GPS becomes un-nessecary for subsea positioning at that point although we would still use it for positioning surface equipment due to speed of sound variations in the subsea positioning system.